diff --git a/modules/juce_audio_formats/codecs/flac/libFLAC/bitreader.c b/modules/juce_audio_formats/codecs/flac/libFLAC/bitreader.c
index a4632e37b3..47e07e284f 100644
--- a/modules/juce_audio_formats/codecs/flac/libFLAC/bitreader.c
+++ b/modules/juce_audio_formats/codecs/flac/libFLAC/bitreader.c
@@ -90,7 +90,7 @@ struct FLAC__BitReader {
 
 static inline void crc16_update_word_(FLAC__BitReader *br, uint32_t word)
 {
-	register unsigned crc = br->read_crc16;
+	unsigned crc = br->read_crc16;
 #if FLAC__BYTES_PER_WORD == 4
 	switch(br->crc16_align) {
 		case  0: crc = FLAC__CRC16_UPDATE((unsigned)(word >> 24), crc);
diff --git a/modules/juce_audio_formats/codecs/flac/libFLAC/bitwriter.c b/modules/juce_audio_formats/codecs/flac/libFLAC/bitwriter.c
index 565fbcd36e..5658da26c2 100644
--- a/modules/juce_audio_formats/codecs/flac/libFLAC/bitwriter.c
+++ b/modules/juce_audio_formats/codecs/flac/libFLAC/bitwriter.c
@@ -303,7 +303,7 @@ inline FLAC__bool FLAC__bitwriter_write_zeroes(FLAC__BitWriter *bw, unsigned bit
 
 inline FLAC__bool FLAC__bitwriter_write_raw_uint32(FLAC__BitWriter *bw, FLAC__uint32 val, unsigned bits)
 {
-	register unsigned left;
+	unsigned left;
 
 	/* WATCHOUT: code does not work with <32bit words; we can make things much faster with this assertion */
 	FLAC__ASSERT(FLAC__BITS_PER_WORD >= 32);
diff --git a/modules/juce_audio_formats/codecs/flac/libFLAC/md5.c b/modules/juce_audio_formats/codecs/flac/libFLAC/md5.c
index d41f6a8108..de9ac9dc64 100644
--- a/modules/juce_audio_formats/codecs/flac/libFLAC/md5.c
+++ b/modules/juce_audio_formats/codecs/flac/libFLAC/md5.c
@@ -53,7 +53,7 @@
  */
 static void FLAC__MD5Transform(FLAC__uint32 buf[4], FLAC__uint32 const in[16])
 {
-	register FLAC__uint32 a, b, c, d;
+	FLAC__uint32 a, b, c, d;
 
 	a = buf[0];
 	b = buf[1];
diff --git a/modules/juce_core/zip/zlib/crc32.c b/modules/juce_core/zip/zlib/crc32.c
index 500d5364e0..9314d7eb6f 100644
--- a/modules/juce_core/zip/zlib/crc32.c
+++ b/modules/juce_core/zip/zlib/crc32.c
@@ -258,8 +258,8 @@ unsigned long ZEXPORT crc32 (unsigned long crc, const unsigned char FAR *buf, un
 /* ========================================================================= */
 local unsigned long crc32_little(unsigned long crc, const unsigned char FAR *buf, unsigned len)
 {
-    register u4 c;
-    register const u4 FAR *buf4;
+    u4 c;
+    const u4 FAR *buf4;
 
     c = (u4)crc;
     c = ~c;
@@ -295,8 +295,8 @@ local unsigned long crc32_little(unsigned long crc, const unsigned char FAR *buf
 /* ========================================================================= */
 local unsigned long crc32_big (unsigned long crc, const unsigned char FAR *buf, unsigned len)
 {
-    register u4 c;
-    register const u4 FAR *buf4;
+    u4 c;
+    const u4 FAR *buf4;
 
     c = REV((u4)crc);
     c = ~c;
diff --git a/modules/juce_core/zip/zlib/deflate.c b/modules/juce_core/zip/zlib/deflate.c
index 4b8bda58aa..ce87dd918a 100644
--- a/modules/juce_core/zip/zlib/deflate.c
+++ b/modules/juce_core/zip/zlib/deflate.c
@@ -984,9 +984,9 @@ local void lm_init (deflate_state *s)
 local uInt longest_match(deflate_state *s, IPos cur_match)
 {
     unsigned chain_length = s->max_chain_length;/* max hash chain length */
-    register Bytef *scan = s->window + s->strstart; /* current string */
-    register Bytef *match;                       /* matched string */
-    register int len;                           /* length of current match */
+    Bytef *scan = s->window + s->strstart; /* current string */
+    Bytef *match;                       /* matched string */
+    int len;                           /* length of current match */
     int best_len = s->prev_length;              /* best match length so far */
     int nice_match = s->nice_match;             /* stop if match long enough */
     IPos limit = s->strstart > (IPos)MAX_DIST(s) ?
@@ -1001,13 +1001,13 @@ local uInt longest_match(deflate_state *s, IPos cur_match)
     /* Compare two bytes at a time. Note: this is not always beneficial.
      * Try with and without -DUNALIGNED_OK to check.
      */
-    register Bytef *strend = s->window + s->strstart + MAX_MATCH - 1;
-    register ush scan_start = *(ushf*)scan;
-    register ush scan_end   = *(ushf*)(scan+best_len-1);
+    Bytef *strend = s->window + s->strstart + MAX_MATCH - 1;
+    ush scan_start = *(ushf*)scan;
+    ush scan_end   = *(ushf*)(scan+best_len-1);
 #else
-    register Bytef *strend = s->window + s->strstart + MAX_MATCH;
-    register Byte scan_end1  = scan[best_len-1];
-    register Byte scan_end   = scan[best_len];
+    Bytef *strend = s->window + s->strstart + MAX_MATCH;
+    Byte scan_end1  = scan[best_len-1];
+    Byte scan_end   = scan[best_len];
 #endif
 
     /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
@@ -1129,10 +1129,10 @@ local uInt longest_match(deflate_state *s, IPos cur_match)
  */
 local uInt longest_match_fast (deflate_state *s, IPos cur_match)
 {
-    register Bytef *scan = s->window + s->strstart; /* current string */
-    register Bytef *match;                       /* matched string */
-    register int len;                           /* length of current match */
-    register Bytef *strend = s->window + s->strstart + MAX_MATCH;
+    Bytef *scan = s->window + s->strstart; /* current string */
+    Bytef *match;                       /* matched string */
+    int len;                           /* length of current match */
+    Bytef *strend = s->window + s->strstart + MAX_MATCH;
 
     /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
      * It is easy to get rid of this optimization if necessary.
@@ -1215,8 +1215,8 @@ local void check_match(deflate_state *s, IPos start, IPos match, int length)
  */
 local void fill_window (deflate_state *s)
 {
-    register unsigned n, m;
-    register Posf *p;
+    unsigned n, m;
+    Posf *p;
     unsigned more;    /* Amount of free space at the end of the window. */
     uInt wsize = s->w_size;
 
diff --git a/modules/juce_core/zip/zlib/trees.c b/modules/juce_core/zip/zlib/trees.c
index 463bfc26e0..bcb2670c51 100644
--- a/modules/juce_core/zip/zlib/trees.c
+++ b/modules/juce_core/zip/zlib/trees.c
@@ -1122,7 +1122,7 @@ local void set_data_type (deflate_state *s)
  */
 local unsigned bi_reverse (unsigned code_, int len)
 {
-    register unsigned res = 0;
+    unsigned res = 0;
     do {
         res |= code_ & 1;
         code_ >>= 1, res <<= 1;
diff --git a/modules/juce_graphics/image_formats/jpglib/jccolor.c b/modules/juce_graphics/image_formats/jpglib/jccolor.c
index fa239c1372..8ad78efc6f 100644
--- a/modules/juce_graphics/image_formats/jpglib/jccolor.c
+++ b/modules/juce_graphics/image_formats/jpglib/jccolor.c
@@ -132,11 +132,11 @@ rgb_ycc_convert (j_compress_ptr cinfo,
 		 JDIMENSION output_row, int num_rows)
 {
   my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
-  register int r, g, b;
-  register INT32 * ctab = cconvert->rgb_ycc_tab;
-  register JSAMPROW inptr;
-  register JSAMPROW outptr0, outptr1, outptr2;
-  register JDIMENSION col;
+  int r, g, b;
+  INT32 * ctab = cconvert->rgb_ycc_tab;
+  JSAMPROW inptr;
+  JSAMPROW outptr0, outptr1, outptr2;
+  JDIMENSION col;
   JDIMENSION num_cols = cinfo->image_width;
 
   while (--num_rows >= 0) {
@@ -188,11 +188,11 @@ rgb_gray_convert (j_compress_ptr cinfo,
 		  JDIMENSION output_row, int num_rows)
 {
   my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
-  register int r, g, b;
-  register INT32 * ctab = cconvert->rgb_ycc_tab;
-  register JSAMPROW inptr;
-  register JSAMPROW outptr;
-  register JDIMENSION col;
+  int r, g, b;
+  INT32 * ctab = cconvert->rgb_ycc_tab;
+  JSAMPROW inptr;
+  JSAMPROW outptr;
+  JDIMENSION col;
   JDIMENSION num_cols = cinfo->image_width;
 
   while (--num_rows >= 0) {
@@ -227,11 +227,11 @@ cmyk_ycck_convert (j_compress_ptr cinfo,
 		   JDIMENSION output_row, int num_rows)
 {
   my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
-  register int r, g, b;
-  register INT32 * ctab = cconvert->rgb_ycc_tab;
-  register JSAMPROW inptr;
-  register JSAMPROW outptr0, outptr1, outptr2, outptr3;
-  register JDIMENSION col;
+  int r, g, b;
+  INT32 * ctab = cconvert->rgb_ycc_tab;
+  JSAMPROW inptr;
+  JSAMPROW outptr0, outptr1, outptr2, outptr3;
+  JDIMENSION col;
   JDIMENSION num_cols = cinfo->image_width;
 
   while (--num_rows >= 0) {
@@ -281,9 +281,9 @@ grayscale_convert (j_compress_ptr cinfo,
 		   JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
 		   JDIMENSION output_row, int num_rows)
 {
-  register JSAMPROW inptr;
-  register JSAMPROW outptr;
-  register JDIMENSION col;
+  JSAMPROW inptr;
+  JSAMPROW outptr;
+  JDIMENSION col;
   JDIMENSION num_cols = cinfo->image_width;
   int instride = cinfo->input_components;
 
@@ -310,10 +310,10 @@ null_convert (j_compress_ptr cinfo,
 	      JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
 	      JDIMENSION output_row, int num_rows)
 {
-  register JSAMPROW inptr;
-  register JSAMPROW outptr;
-  register JDIMENSION col;
-  register int ci;
+  JSAMPROW inptr;
+  JSAMPROW outptr;
+  JDIMENSION col;
+  int ci;
   int nc = cinfo->num_components;
   JDIMENSION num_cols = cinfo->image_width;
 
diff --git a/modules/juce_graphics/image_formats/jpglib/jcdctmgr.c b/modules/juce_graphics/image_formats/jpglib/jcdctmgr.c
index e3f90dc396..0589ccdf63 100644
--- a/modules/juce_graphics/image_formats/jpglib/jcdctmgr.c
+++ b/modules/juce_graphics/image_formats/jpglib/jcdctmgr.c
@@ -194,9 +194,9 @@ forward_DCT (j_compress_ptr cinfo, jpeg_component_info * compptr,
 
   for (bi = 0; bi < num_blocks; bi++, start_col += DCTSIZE) {
     /* Load data into workspace, applying unsigned->signed conversion */
-    { register DCTELEM *workspaceptr;
-      register JSAMPROW elemptr;
-      register int elemr;
+    { DCTELEM *workspaceptr;
+      JSAMPROW elemptr;
+      int elemr;
 
       workspaceptr = workspace;
       for (elemr = 0; elemr < DCTSIZE; elemr++) {
@@ -211,7 +211,7 @@ forward_DCT (j_compress_ptr cinfo, jpeg_component_info * compptr,
 	*workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE;
 	*workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE;
 #else
-	{ register int elemc;
+	{ int elemc;
 	  for (elemc = DCTSIZE; elemc > 0; elemc--) {
 	    *workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE;
 	  }
@@ -224,9 +224,9 @@ forward_DCT (j_compress_ptr cinfo, jpeg_component_info * compptr,
     (*do_dct) (workspace);
 
     /* Quantize/descale the coefficients, and store into coef_blocks[] */
-    { register DCTELEM temp, qval;
-      register int i;
-      register JCOEFPTR output_ptr = coef_blocks[bi];
+    { DCTELEM temp, qval;
+      int i;
+      JCOEFPTR output_ptr = coef_blocks[bi];
 
       for (i = 0; i < DCTSIZE2; i++) {
 	qval = divisors[i];
@@ -284,9 +284,9 @@ forward_DCT_float (j_compress_ptr cinfo, jpeg_component_info * compptr,
 
   for (bi = 0; bi < num_blocks; bi++, start_col += DCTSIZE) {
     /* Load data into workspace, applying unsigned->signed conversion */
-    { register FAST_FLOAT *workspaceptr;
-      register JSAMPROW elemptr;
-      register int elemr;
+    { FAST_FLOAT *workspaceptr;
+      JSAMPROW elemptr;
+      int elemr;
 
       workspaceptr = workspace;
       for (elemr = 0; elemr < DCTSIZE; elemr++) {
@@ -301,7 +301,7 @@ forward_DCT_float (j_compress_ptr cinfo, jpeg_component_info * compptr,
 	*workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE);
 	*workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE);
 #else
-	{ register int elemc;
+	{ int elemc;
 	  for (elemc = DCTSIZE; elemc > 0; elemc--) {
 	    *workspaceptr++ = (FAST_FLOAT)
 	      (GETJSAMPLE(*elemptr++) - CENTERJSAMPLE);
@@ -315,9 +315,9 @@ forward_DCT_float (j_compress_ptr cinfo, jpeg_component_info * compptr,
     (*do_dct) (workspace);
 
     /* Quantize/descale the coefficients, and store into coef_blocks[] */
-    { register FAST_FLOAT temp;
-      register int i;
-      register JCOEFPTR output_ptr = coef_blocks[bi];
+    { FAST_FLOAT temp;
+      int i;
+      JCOEFPTR output_ptr = coef_blocks[bi];
 
       for (i = 0; i < DCTSIZE2; i++) {
 	/* Apply the quantization and scaling factor */
diff --git a/modules/juce_graphics/image_formats/jpglib/jchuff.c b/modules/juce_graphics/image_formats/jpglib/jchuff.c
index 581ed59c6d..e718cf50aa 100644
--- a/modules/juce_graphics/image_formats/jpglib/jchuff.c
+++ b/modules/juce_graphics/image_formats/jpglib/jchuff.c
@@ -303,8 +303,8 @@ emit_bits (working_state * state, unsigned int code, int size)
 /* Emit some bits; return TRUE if successful, FALSE if must suspend */
 {
   /* This routine is heavily used, so it's worth coding tightly. */
-  register INT32 put_buffer = (INT32) code;
-  register int put_bits = state->cur.put_bits;
+  INT32 put_buffer = (INT32) code;
+  int put_bits = state->cur.put_bits;
 
   /* if size is 0, caller used an invalid Huffman table entry */
   if (size == 0)
@@ -353,9 +353,9 @@ LOCAL(boolean)
 encode_one_block (working_state * state, JCOEFPTR block, int last_dc_val,
 		  c_derived_tbl *dctbl, c_derived_tbl *actbl)
 {
-  register int temp, temp2;
-  register int nbits;
-  register int k, r, i;
+  int temp, temp2;
+  int nbits;
+  int k, r, i;
 
   /* Encode the DC coefficient difference per section F.1.2.1 */
 
@@ -572,9 +572,9 @@ LOCAL(void)
 htest_one_block (j_compress_ptr cinfo, JCOEFPTR block, int last_dc_val,
 		 long dc_counts[], long ac_counts[])
 {
-  register int temp;
-  register int nbits;
-  register int k, r;
+  int temp;
+  int nbits;
+  int k, r;
 
   /* Encode the DC coefficient difference per section F.1.2.1 */
 
diff --git a/modules/juce_graphics/image_formats/jpglib/jcphuff.c b/modules/juce_graphics/image_formats/jpglib/jcphuff.c
index 692b52b9f9..f35e75a26f 100644
--- a/modules/juce_graphics/image_formats/jpglib/jcphuff.c
+++ b/modules/juce_graphics/image_formats/jpglib/jcphuff.c
@@ -229,8 +229,8 @@ emit_bits_p (phuff_entropy_ptr entropy, unsigned int code, int size)
 /* Emit some bits, unless we are in gather mode */
 {
   /* This routine is heavily used, so it's worth coding tightly. */
-  register INT32 put_buffer = (INT32) code;
-  register int put_bits = entropy->put_bits;
+  INT32 put_buffer = (INT32) code;
+  int put_bits = entropy->put_bits;
 
   /* if size is 0, caller used an invalid Huffman table entry */
   if (size == 0)
@@ -315,7 +315,7 @@ emit_buffered_bits (phuff_entropy_ptr entropy, char * bufstart,
 LOCAL(void)
 emit_eobrun (phuff_entropy_ptr entropy)
 {
-  register int temp, nbits;
+  int temp, nbits;
 
   if (entropy->EOBRUN > 0) {	/* if there is any pending EOBRUN */
     temp = entropy->EOBRUN;
@@ -377,8 +377,8 @@ METHODDEF(boolean)
 encode_mcu_DC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 {
   phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
-  register int temp, temp2;
-  register int nbits;
+  int temp, temp2;
+  int nbits;
   int blkn, ci;
   int Al = cinfo->Al;
   JBLOCKROW block;
@@ -464,9 +464,9 @@ METHODDEF(boolean)
 encode_mcu_AC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 {
   phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
-  register int temp, temp2;
-  register int nbits;
-  register int r, k;
+  int temp, temp2;
+  int nbits;
+  int r, k;
   int Se = cinfo->Se;
   int Al = cinfo->Al;
   JBLOCKROW block;
@@ -571,7 +571,7 @@ METHODDEF(boolean)
 encode_mcu_DC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 {
   phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
-  register int temp;
+  int temp;
   int blkn;
   int Al = cinfo->Al;
   JBLOCKROW block;
@@ -618,8 +618,8 @@ METHODDEF(boolean)
 encode_mcu_AC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
 {
   phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy;
-  register int temp;
-  register int r, k;
+  int temp;
+  int r, k;
   int EOB;
   char *BR_buffer;
   unsigned int BR;
diff --git a/modules/juce_graphics/image_formats/jpglib/jcprepct.c b/modules/juce_graphics/image_formats/jpglib/jcprepct.c
index fdc4bc2d5e..463d6137ab 100644
--- a/modules/juce_graphics/image_formats/jpglib/jcprepct.c
+++ b/modules/juce_graphics/image_formats/jpglib/jcprepct.c
@@ -106,7 +106,7 @@ LOCAL(void)
 expand_bottom_edge (JSAMPARRAY image_data, JDIMENSION num_cols,
 		    int input_rows, int output_rows)
 {
-  register int row;
+  int row;
 
   for (row = input_rows; row < output_rows; row++) {
     jcopy_sample_rows(image_data, input_rows-1, image_data, row,
diff --git a/modules/juce_graphics/image_formats/jpglib/jcsample.c b/modules/juce_graphics/image_formats/jpglib/jcsample.c
index 37c658f544..13f3cbcb5e 100644
--- a/modules/juce_graphics/image_formats/jpglib/jcsample.c
+++ b/modules/juce_graphics/image_formats/jpglib/jcsample.c
@@ -87,9 +87,9 @@ LOCAL(void)
 expand_right_edge (JSAMPARRAY image_data, int num_rows,
 		   JDIMENSION input_cols, JDIMENSION output_cols)
 {
-  register JSAMPROW ptr;
-  register JSAMPLE pixval;
-  register int count;
+  JSAMPROW ptr;
+  JSAMPLE pixval;
+  int count;
   int row;
   int numcols = (int) (output_cols - input_cols);
 
@@ -215,8 +215,8 @@ h2v1_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr,
   int outrow;
   JDIMENSION outcol;
   JDIMENSION output_cols = compptr->width_in_blocks * DCTSIZE;
-  register JSAMPROW inptr, outptr;
-  register int bias;
+  JSAMPROW inptr, outptr;
+  int bias;
 
   /* Expand input data enough to let all the output samples be generated
    * by the standard loop.  Special-casing padded output would be more
@@ -252,8 +252,8 @@ h2v2_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr,
   int inrow, outrow;
   JDIMENSION outcol;
   JDIMENSION output_cols = compptr->width_in_blocks * DCTSIZE;
-  register JSAMPROW inptr0, inptr1, outptr;
-  register int bias;
+  JSAMPROW inptr0, inptr1, outptr;
+  int bias;
 
   /* Expand input data enough to let all the output samples be generated
    * by the standard loop.  Special-casing padded output would be more
@@ -295,7 +295,7 @@ h2v2_smooth_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr,
   int inrow, outrow;
   JDIMENSION colctr;
   JDIMENSION output_cols = compptr->width_in_blocks * DCTSIZE;
-  register JSAMPROW inptr0, inptr1, above_ptr, below_ptr, outptr;
+  JSAMPROW inptr0, inptr1, above_ptr, below_ptr, outptr;
   INT32 membersum, neighsum, memberscale, neighscale;
 
   /* Expand input data enough to let all the output samples be generated
@@ -395,7 +395,7 @@ fullsize_smooth_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr,
   int outrow;
   JDIMENSION colctr;
   JDIMENSION output_cols = compptr->width_in_blocks * DCTSIZE;
-  register JSAMPROW inptr, above_ptr, below_ptr, outptr;
+  JSAMPROW inptr, above_ptr, below_ptr, outptr;
   INT32 membersum, neighsum, memberscale, neighscale;
   int colsum, lastcolsum, nextcolsum;
 
diff --git a/modules/juce_graphics/image_formats/jpglib/jdcolor.c b/modules/juce_graphics/image_formats/jpglib/jdcolor.c
index a4ca256881..30763e9210 100644
--- a/modules/juce_graphics/image_formats/jpglib/jdcolor.c
+++ b/modules/juce_graphics/image_formats/jpglib/jdcolor.c
@@ -122,17 +122,17 @@ ycc_rgb_convert (j_decompress_ptr cinfo,
 		 JSAMPARRAY output_buf, int num_rows)
 {
   my_cconvert_ptr2 cconvert = (my_cconvert_ptr2) cinfo->cconvert;
-  register int y, cb, cr;
-  register JSAMPROW outptr;
-  register JSAMPROW inptr0, inptr1, inptr2;
-  register JDIMENSION col;
+  int y, cb, cr;
+  JSAMPROW outptr;
+  JSAMPROW inptr0, inptr1, inptr2;
+  JDIMENSION col;
   JDIMENSION num_cols = cinfo->output_width;
   /* copy these pointers into registers if possible */
-  register JSAMPLE * range_limit = cinfo->sample_range_limit;
-  register int * Crrtab = cconvert->Cr_r_tab;
-  register int * Cbbtab = cconvert->Cb_b_tab;
-  register INT32 * Crgtab = cconvert->Cr_g_tab;
-  register INT32 * Cbgtab = cconvert->Cb_g_tab;
+  JSAMPLE * range_limit = cinfo->sample_range_limit;
+  int * Crrtab = cconvert->Cr_r_tab;
+  int * Cbbtab = cconvert->Cb_b_tab;
+  INT32 * Crgtab = cconvert->Cr_g_tab;
+  INT32 * Cbgtab = cconvert->Cb_g_tab;
   SHIFT_TEMPS
 
   while (--num_rows >= 0) {
@@ -170,9 +170,9 @@ null_convert2 (j_decompress_ptr cinfo,
 	      JSAMPIMAGE input_buf, JDIMENSION input_row,
 	      JSAMPARRAY output_buf, int num_rows)
 {
-  register JSAMPROW inptr, outptr;
-  register JDIMENSION count;
-  register int num_components = cinfo->num_components;
+  JSAMPROW inptr, outptr;
+  JDIMENSION count;
+  int num_components = cinfo->num_components;
   JDIMENSION num_cols = cinfo->output_width;
   int ci;
 
@@ -218,8 +218,8 @@ gray_rgb_convert (j_decompress_ptr cinfo,
 		  JSAMPIMAGE input_buf, JDIMENSION input_row,
 		  JSAMPARRAY output_buf, int num_rows)
 {
-  register JSAMPROW inptr, outptr;
-  register JDIMENSION col;
+  JSAMPROW inptr, outptr;
+  JDIMENSION col;
   JDIMENSION num_cols = cinfo->output_width;
 
   while (--num_rows >= 0) {
@@ -247,17 +247,17 @@ ycck_cmyk_convert (j_decompress_ptr cinfo,
 		   JSAMPARRAY output_buf, int num_rows)
 {
   my_cconvert_ptr2 cconvert = (my_cconvert_ptr2) cinfo->cconvert;
-  register int y, cb, cr;
-  register JSAMPROW outptr;
-  register JSAMPROW inptr0, inptr1, inptr2, inptr3;
-  register JDIMENSION col;
+  int y, cb, cr;
+  JSAMPROW outptr;
+  JSAMPROW inptr0, inptr1, inptr2, inptr3;
+  JDIMENSION col;
   JDIMENSION num_cols = cinfo->output_width;
   /* copy these pointers into registers if possible */
-  register JSAMPLE * range_limit = cinfo->sample_range_limit;
-  register int * Crrtab = cconvert->Cr_r_tab;
-  register int * Cbbtab = cconvert->Cb_b_tab;
-  register INT32 * Crgtab = cconvert->Cr_g_tab;
-  register INT32 * Cbgtab = cconvert->Cb_g_tab;
+  JSAMPLE * range_limit = cinfo->sample_range_limit;
+  int * Crrtab = cconvert->Cr_r_tab;
+  int * Cbbtab = cconvert->Cb_b_tab;
+  INT32 * Crgtab = cconvert->Cr_g_tab;
+  INT32 * Cbgtab = cconvert->Cb_g_tab;
   SHIFT_TEMPS
 
   while (--num_rows >= 0) {
diff --git a/modules/juce_graphics/image_formats/jpglib/jdhuff.c b/modules/juce_graphics/image_formats/jpglib/jdhuff.c
index 1468a834cc..e7e0ab73a3 100644
--- a/modules/juce_graphics/image_formats/jpglib/jdhuff.c
+++ b/modules/juce_graphics/image_formats/jpglib/jdhuff.c
@@ -290,13 +290,13 @@ jpeg_make_d_derived_tbl (j_decompress_ptr cinfo, boolean isDC, int tblno,
 
 GLOBAL(boolean)
 jpeg_fill_bit_buffer (bitread_working_state * state,
-		      register bit_buf_type get_buffer, register int bits_left,
+		      bit_buf_type get_buffer, int bits_left,
 		      int nbits)
 /* Load up the bit buffer to a depth of at least nbits */
 {
   /* Copy heavily used state fields into locals (hopefully registers) */
-  register const JOCTET * next_input_byte = state->next_input_byte;
-  register size_t bytes_in_buffer = state->bytes_in_buffer;
+  const JOCTET * next_input_byte = state->next_input_byte;
+  size_t bytes_in_buffer = state->bytes_in_buffer;
   j_decompress_ptr cinfo = state->cinfo;
 
   /* Attempt to load at least MIN_GET_BITS bits into get_buffer. */
@@ -305,7 +305,7 @@ jpeg_fill_bit_buffer (bitread_working_state * state,
 
   if (cinfo->unread_marker == 0) {	/* cannot advance past a marker */
     while (bits_left < MIN_GET_BITS) {
-      register int c;
+      int c;
 
       /* Attempt to read a byte */
       if (bytes_in_buffer == 0) {
@@ -396,11 +396,11 @@ jpeg_fill_bit_buffer (bitread_working_state * state,
 
 GLOBAL(int)
 jpeg_huff_decode (bitread_working_state * state,
-		  register bit_buf_type get_buffer, register int bits_left,
+		  bit_buf_type get_buffer, int bits_left,
 		  d_derived_tbl * htbl, int min_bits)
 {
-  register int l = min_bits;
-  register INT32 code;
+  int l = min_bits;
+  INT32 code;
 
   /* HUFF_DECODE has determined that the code is at least min_bits */
   /* bits long, so fetch that many bits in one swoop. */
@@ -517,7 +517,7 @@ decode_mcu (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
       JBLOCKROW block = MCU_data[blkn];
       d_derived_tbl * dctbl = entropy->dc_cur_tbls[blkn];
       d_derived_tbl * actbl = entropy->ac_cur_tbls[blkn];
-      register int s, k, r;
+      int s, k, r;
 
       /* Decode a single block's worth of coefficients */
 
diff --git a/modules/juce_graphics/image_formats/jpglib/jdhuff.h b/modules/juce_graphics/image_formats/jpglib/jdhuff.h
index 1b139871a8..492a912577 100644
--- a/modules/juce_graphics/image_formats/jpglib/jdhuff.h
+++ b/modules/juce_graphics/image_formats/jpglib/jdhuff.h
@@ -103,8 +103,8 @@ typedef struct {		/* Bitreading working state within an MCU */
 
 /* Macros to declare and load/save bitread local variables. */
 #define BITREAD_STATE_VARS  \
-	register bit_buf_type get_buffer;  \
-	register int bits_left;  \
+	bit_buf_type get_buffer;  \
+	int bits_left;  \
 	bitread_working_state br_state
 
 #define BITREAD_LOAD_STATE(cinfop,permstate)  \
@@ -155,8 +155,8 @@ typedef struct {		/* Bitreading working state within an MCU */
 
 /* Load up the bit buffer to a depth of at least nbits */
 EXTERN(boolean) jpeg_fill_bit_buffer
-	JPP((bitread_working_state * state, register bit_buf_type get_buffer,
-	     register int bits_left, int nbits));
+	JPP((bitread_working_state * state, bit_buf_type get_buffer,
+	     int bits_left, int nbits));
 
 
 /*
@@ -177,7 +177,7 @@ EXTERN(boolean) jpeg_fill_bit_buffer
  */
 
 #define HUFF_DECODE(result,state,htbl,failaction,slowlabel) \
-{ register int nb, look; \
+{ int nb, look; \
   if (bits_left < HUFF_LOOKAHEAD) { \
     if (! jpeg_fill_bit_buffer(&state,get_buffer,bits_left, 0)) {failaction;} \
     get_buffer = state.get_buffer; bits_left = state.bits_left; \
@@ -200,7 +200,7 @@ slowlabel: \
 
 /* Out-of-line case for Huffman code fetching */
 EXTERN(int) jpeg_huff_decode
-	JPP((bitread_working_state * state, register bit_buf_type get_buffer,
-	     register int bits_left, d_derived_tbl * htbl, int min_bits));
+	JPP((bitread_working_state * state, bit_buf_type get_buffer,
+	     int bits_left, d_derived_tbl * htbl, int min_bits));
 
 #endif
diff --git a/modules/juce_graphics/image_formats/jpglib/jdmerge.c b/modules/juce_graphics/image_formats/jpglib/jdmerge.c
index faee6ce5c4..1f483f622e 100644
--- a/modules/juce_graphics/image_formats/jpglib/jdmerge.c
+++ b/modules/juce_graphics/image_formats/jpglib/jdmerge.c
@@ -228,13 +228,13 @@ h2v1_merged_upsample (j_decompress_ptr cinfo,
 		      JSAMPARRAY output_buf)
 {
   my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample;
-  register int y, cred, cgreen, cblue;
+  int y, cred, cgreen, cblue;
   int cb, cr;
-  register JSAMPROW outptr;
+  JSAMPROW outptr;
   JSAMPROW inptr0, inptr1, inptr2;
   JDIMENSION col;
   /* copy these pointers into registers if possible */
-  register JSAMPLE * range_limit = cinfo->sample_range_limit;
+  JSAMPLE * range_limit = cinfo->sample_range_limit;
   int * Crrtab = upsample->Cr_r_tab;
   int * Cbbtab = upsample->Cb_b_tab;
   INT32 * Crgtab = upsample->Cr_g_tab;
@@ -290,13 +290,13 @@ h2v2_merged_upsample (j_decompress_ptr cinfo,
 		      JSAMPARRAY output_buf)
 {
   my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample;
-  register int y, cred, cgreen, cblue;
+  int y, cred, cgreen, cblue;
   int cb, cr;
-  register JSAMPROW outptr0, outptr1;
+  JSAMPROW outptr0, outptr1;
   JSAMPROW inptr00, inptr01, inptr1, inptr2;
   JDIMENSION col;
   /* copy these pointers into registers if possible */
-  register JSAMPLE * range_limit = cinfo->sample_range_limit;
+  JSAMPLE * range_limit = cinfo->sample_range_limit;
   int * Crrtab = upsample->Cr_r_tab;
   int * Cbbtab = upsample->Cb_b_tab;
   INT32 * Crgtab = upsample->Cr_g_tab;
diff --git a/modules/juce_graphics/image_formats/jpglib/jdphuff.c b/modules/juce_graphics/image_formats/jpglib/jdphuff.c
index c70096835b..10e0a4636d 100644
--- a/modules/juce_graphics/image_formats/jpglib/jdphuff.c
+++ b/modules/juce_graphics/image_formats/jpglib/jdphuff.c
@@ -261,7 +261,7 @@ decode_mcu_DC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
 {
   phuff_entropy_ptr2 entropy = (phuff_entropy_ptr2) cinfo->entropy;
   int Al = cinfo->Al;
-  register int s, r;
+  int s, r;
   int blkn, ci;
   JBLOCKROW block;
   BITREAD_STATE_VARS;
@@ -333,7 +333,7 @@ decode_mcu_AC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
   phuff_entropy_ptr2 entropy = (phuff_entropy_ptr2) cinfo->entropy;
   int Se = cinfo->Se;
   int Al = cinfo->Al;
-  register int s, k, r;
+  int s, k, r;
   unsigned int EOBRUN;
   JBLOCKROW block;
   BITREAD_STATE_VARS;
@@ -468,7 +468,7 @@ decode_mcu_AC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
   int Se = cinfo->Se;
   int p1 = 1 << cinfo->Al;	/* 1 in the bit position being coded */
   int m1 = (-1) << cinfo->Al;	/* -1 in the bit position being coded */
-  register int s, k, r;
+  int s, k, r;
   unsigned int EOBRUN;
   JBLOCKROW block;
   JCOEFPTR thiscoef;
diff --git a/modules/juce_graphics/image_formats/jpglib/jdsample.c b/modules/juce_graphics/image_formats/jpglib/jdsample.c
index c0a142a74c..ab2c01286e 100644
--- a/modules/juce_graphics/image_formats/jpglib/jdsample.c
+++ b/modules/juce_graphics/image_formats/jpglib/jdsample.c
@@ -191,9 +191,9 @@ int_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 {
   my_upsample_ptr2 upsample = (my_upsample_ptr2) cinfo->upsample;
   JSAMPARRAY output_data = *output_data_ptr;
-  register JSAMPROW inptr, outptr;
-  register JSAMPLE invalue;
-  register int h;
+  JSAMPROW inptr, outptr;
+  JSAMPLE invalue;
+  int h;
   JSAMPROW outend;
   int h_expand, v_expand;
   int inrow, outrow;
@@ -234,8 +234,8 @@ h2v1_upsample (j_decompress_ptr cinfo, jpeg_component_info *,
 	       JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)
 {
   JSAMPARRAY output_data = *output_data_ptr;
-  register JSAMPROW inptr, outptr;
-  register JSAMPLE invalue;
+  JSAMPROW inptr, outptr;
+  JSAMPLE invalue;
   JSAMPROW outend;
   int inrow;
 
@@ -262,8 +262,8 @@ h2v2_upsample (j_decompress_ptr cinfo, jpeg_component_info *,
 	       JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)
 {
   JSAMPARRAY output_data = *output_data_ptr;
-  register JSAMPROW inptr, outptr;
-  register JSAMPLE invalue;
+  JSAMPROW inptr, outptr;
+  JSAMPLE invalue;
   JSAMPROW outend;
   int inrow, outrow;
 
@@ -305,9 +305,9 @@ h2v1_fancy_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 		     JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)
 {
   JSAMPARRAY output_data = *output_data_ptr;
-  register JSAMPROW inptr, outptr;
-  register int invalue;
-  register JDIMENSION colctr;
+  JSAMPROW inptr, outptr;
+  int invalue;
+  JDIMENSION colctr;
   int inrow;
 
   for (inrow = 0; inrow < cinfo->max_v_samp_factor; inrow++) {
@@ -346,13 +346,13 @@ h2v2_fancy_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,
 		     JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)
 {
   JSAMPARRAY output_data = *output_data_ptr;
-  register JSAMPROW inptr0, inptr1, outptr;
+  JSAMPROW inptr0, inptr1, outptr;
 #if BITS_IN_JSAMPLE == 8
-  register int thiscolsum, lastcolsum, nextcolsum;
+  int thiscolsum, lastcolsum, nextcolsum;
 #else
-  register INT32 thiscolsum, lastcolsum, nextcolsum;
+  INT32 thiscolsum, lastcolsum, nextcolsum;
 #endif
-  register JDIMENSION colctr;
+  JDIMENSION colctr;
   int inrow, outrow, v;
 
   inrow = outrow = 0;
diff --git a/modules/juce_graphics/image_formats/jpglib/jquant1.c b/modules/juce_graphics/image_formats/jpglib/jquant1.c
index 7153f467b5..65f4882374 100644
--- a/modules/juce_graphics/image_formats/jpglib/jquant1.c
+++ b/modules/juce_graphics/image_formats/jpglib/jquant1.c
@@ -462,12 +462,12 @@ color_quantize (j_decompress_ptr cinfo, JSAMPARRAY input_buf,
 {
   my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize;
   JSAMPARRAY colorindex = cquantize->colorindex;
-  register int pixcode, ci;
-  register JSAMPROW ptrin, ptrout;
+  int pixcode, ci;
+  JSAMPROW ptrin, ptrout;
   int row;
   JDIMENSION col;
   JDIMENSION width = cinfo->output_width;
-  register int nc = cinfo->out_color_components;
+  int nc = cinfo->out_color_components;
 
   for (row = 0; row < num_rows; row++) {
     ptrin = input_buf[row];
@@ -489,8 +489,8 @@ color_quantize3 (j_decompress_ptr cinfo, JSAMPARRAY input_buf,
 /* Fast path for out_color_components==3, no dithering */
 {
   my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize;
-  register int pixcode;
-  register JSAMPROW ptrin, ptrout;
+  int pixcode;
+  JSAMPROW ptrin, ptrout;
   JSAMPROW colorindex0 = cquantize->colorindex[0];
   JSAMPROW colorindex1 = cquantize->colorindex[1];
   JSAMPROW colorindex2 = cquantize->colorindex[2];
@@ -517,8 +517,8 @@ quantize_ord_dither (j_decompress_ptr cinfo, JSAMPARRAY input_buf,
 /* General case, with ordered dithering */
 {
   my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize;
-  register JSAMPROW input_ptr;
-  register JSAMPROW output_ptr;
+  JSAMPROW input_ptr;
+  JSAMPROW output_ptr;
   JSAMPROW colorindex_ci;
   int * dither;			/* points to active row of dither matrix */
   int row_index, col_index;	/* current indexes into dither matrix */
@@ -567,9 +567,9 @@ quantize3_ord_dither (j_decompress_ptr cinfo, JSAMPARRAY input_buf,
 /* Fast path for out_color_components==3, with ordered dithering */
 {
   my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize;
-  register int pixcode;
-  register JSAMPROW input_ptr;
-  register JSAMPROW output_ptr;
+  int pixcode;
+  JSAMPROW input_ptr;
+  JSAMPROW output_ptr;
   JSAMPROW colorindex0 = cquantize->colorindex[0];
   JSAMPROW colorindex1 = cquantize->colorindex[1];
   JSAMPROW colorindex2 = cquantize->colorindex[2];
@@ -612,14 +612,14 @@ quantize_fs_dither (j_decompress_ptr cinfo, JSAMPARRAY input_buf,
 /* General case, with Floyd-Steinberg dithering */
 {
   my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize;
-  register LOCFSERROR cur;	/* current error or pixel value */
+  LOCFSERROR cur;	/* current error or pixel value */
   LOCFSERROR belowerr;		/* error for pixel below cur */
   LOCFSERROR bpreverr;		/* error for below/prev col */
   LOCFSERROR bnexterr;		/* error for below/next col */
   LOCFSERROR delta;
-  register FSERRPTR errorptr;	/* => fserrors[] at column before current */
-  register JSAMPROW input_ptr;
-  register JSAMPROW output_ptr;
+  FSERRPTR errorptr;	/* => fserrors[] at column before current */
+  JSAMPROW input_ptr;
+  JSAMPROW output_ptr;
   JSAMPROW colorindex_ci;
   JSAMPROW colormap_ci;
   int pixcode;
diff --git a/modules/juce_graphics/image_formats/jpglib/jquant2.c b/modules/juce_graphics/image_formats/jpglib/jquant2.c
index 6c2524e1dc..8f50d536ab 100644
--- a/modules/juce_graphics/image_formats/jpglib/jquant2.c
+++ b/modules/juce_graphics/image_formats/jpglib/jquant2.c
@@ -225,9 +225,9 @@ prescan_quantize (j_decompress_ptr cinfo, JSAMPARRAY input_buf,
 		  JSAMPARRAY, int num_rows)
 {
   my_cquantize_ptr2 cquantize = (my_cquantize_ptr2) cinfo->cquantize;
-  register JSAMPROW ptr;
-  register histptr histp;
-  register hist3d histogram = cquantize->histogram;
+  JSAMPROW ptr;
+  histptr histp;
+  hist3d histogram = cquantize->histogram;
   int row;
   JDIMENSION col;
   JDIMENSION width = cinfo->output_width;
@@ -274,9 +274,9 @@ find_biggest_color_pop (boxptr boxlist, int numboxes)
 /* Find the splittable box with the largest color population */
 /* Returns NULL if no splittable boxes remain */
 {
-  register boxptr boxp;
-  register int i;
-  register long maxc = 0;
+  boxptr boxp;
+  int i;
+  long maxc = 0;
   boxptr which = NULL;
 
   for (i = 0, boxp = boxlist; i < numboxes; i++, boxp++) {
@@ -294,9 +294,9 @@ find_biggest_volume (boxptr boxlist, int numboxes)
 /* Find the splittable box with the largest (scaled) volume */
 /* Returns NULL if no splittable boxes remain */
 {
-  register boxptr boxp;
-  register int i;
-  register INT32 maxv = 0;
+  boxptr boxp;
+  int i;
+  INT32 maxv = 0;
   boxptr which = NULL;
 
   for (i = 0, boxp = boxlist; i < numboxes; i++, boxp++) {
@@ -427,7 +427,7 @@ median_cut (j_decompress_ptr cinfo, boxptr boxlist, int numboxes,
 {
   int n,lb;
   int c0,c1,c2,cmax;
-  register boxptr b1,b2;
+  boxptr b1,b2;
 
   while (numboxes < desired_colors) {
     /* Select box to split.
@@ -783,12 +783,12 @@ find_best_colors (j_decompress_ptr cinfo, int minc0, int minc1, int minc2,
 {
   int ic0, ic1, ic2;
   int i, icolor;
-  register INT32 * bptr;	/* pointer into bestdist[] array */
+  INT32 * bptr;	/* pointer into bestdist[] array */
   JSAMPLE * cptr;		/* pointer into bestcolor[] array */
   INT32 dist0, dist1;		/* initial distance values */
-  register INT32 dist2;		/* current distance in inner loop */
+  INT32 dist2;		/* current distance in inner loop */
   INT32 xx0, xx1;		/* distance increments */
-  register INT32 xx2;
+  INT32 xx2;
   INT32 inc0, inc1, inc2;	/* initial values for increments */
   /* This array holds the distance to the nearest-so-far color for each cell */
   INT32 bestdist[BOX_C0_ELEMS * BOX_C1_ELEMS * BOX_C2_ELEMS];
@@ -861,8 +861,8 @@ fill_inverse_cmap (j_decompress_ptr cinfo, int c0, int c1, int c2)
   hist3d histogram = cquantize->histogram;
   int minc0, minc1, minc2;	/* lower left corner of update box */
   int ic0, ic1, ic2;
-  register JSAMPLE * cptr;	/* pointer into bestcolor[] array */
-  register histptr cachep;	/* pointer into main cache array */
+  JSAMPLE * cptr;	/* pointer into bestcolor[] array */
+  histptr cachep;	/* pointer into main cache array */
   /* This array lists the candidate colormap indexes. */
   JSAMPLE colorlist[MAXNUMCOLORS];
   int numcolors;		/* number of candidate colors */
@@ -918,9 +918,9 @@ pass2_no_dither (j_decompress_ptr cinfo,
 {
   my_cquantize_ptr2 cquantize = (my_cquantize_ptr2) cinfo->cquantize;
   hist3d histogram = cquantize->histogram;
-  register JSAMPROW inptr, outptr;
-  register histptr cachep;
-  register int c0, c1, c2;
+  JSAMPROW inptr, outptr;
+  histptr cachep;
+  int c0, c1, c2;
   int row;
   JDIMENSION col;
   JDIMENSION width = cinfo->output_width;
@@ -952,10 +952,10 @@ pass2_fs_dither (j_decompress_ptr cinfo,
 {
   my_cquantize_ptr2 cquantize = (my_cquantize_ptr2) cinfo->cquantize;
   hist3d histogram = cquantize->histogram;
-  register LOCFSERROR cur0, cur1, cur2;	/* current error or pixel value */
+  LOCFSERROR cur0, cur1, cur2;	/* current error or pixel value */
   LOCFSERROR belowerr0, belowerr1, belowerr2; /* error for pixel below cur */
   LOCFSERROR bpreverr0, bpreverr1, bpreverr2; /* error for below/prev col */
-  register FSERRPTR errorptr;	/* => fserrors[] at column before current */
+  FSERRPTR errorptr;	/* => fserrors[] at column before current */
   JSAMPROW inptr;		/* => current input pixel */
   JSAMPROW outptr;		/* => current output pixel */
   histptr cachep;
@@ -1030,7 +1030,7 @@ pass2_fs_dither (j_decompress_ptr cinfo,
       if (*cachep == 0)
 	fill_inverse_cmap(cinfo, cur0>>C0_SHIFT,cur1>>C1_SHIFT,cur2>>C2_SHIFT);
       /* Now emit the colormap index for this cell */
-      { register int pixcode = *cachep - 1;
+      { int pixcode = *cachep - 1;
 	*outptr = (JSAMPLE) pixcode;
 	/* Compute representation error for this pixel */
 	cur0 -= GETJSAMPLE(colormap0[pixcode]);
@@ -1041,7 +1041,7 @@ pass2_fs_dither (j_decompress_ptr cinfo,
        * Add these into the running sums, and simultaneously shift the
        * next-line error sums left by 1 column.
        */
-      { register LOCFSERROR bnexterr, delta;
+      { LOCFSERROR bnexterr, delta;
 
 	bnexterr = cur0;	/* Process component 0 */
 	delta = cur0 * 2;
diff --git a/modules/juce_graphics/image_formats/jpglib/jutils.c b/modules/juce_graphics/image_formats/jpglib/jutils.c
index 286cda2070..68a8083394 100644
--- a/modules/juce_graphics/image_formats/jpglib/jutils.c
+++ b/modules/juce_graphics/image_formats/jpglib/jutils.c
@@ -117,13 +117,13 @@ jcopy_sample_rows (JSAMPARRAY input_array, int source_row,
  * The source and destination arrays must be at least as wide as num_cols.
  */
 {
-  register JSAMPROW inptr, outptr;
+  JSAMPROW inptr, outptr;
 #ifdef FMEMCOPY
-  register size_t count = (size_t) (num_cols * SIZEOF(JSAMPLE));
+  size_t count = (size_t) (num_cols * SIZEOF(JSAMPLE));
 #else
-  register JDIMENSION count;
+  JDIMENSION count;
 #endif
-  register int row;
+  int row;
 
   input_array += source_row;
   output_array += dest_row;
@@ -149,8 +149,8 @@ jcopy_block_row (JBLOCKROW input_row, JBLOCKROW output_row,
 #ifdef FMEMCOPY
   FMEMCOPY(output_row, input_row, num_blocks * (DCTSIZE2 * SIZEOF(JCOEF)));
 #else
-  register JCOEFPTR inptr, outptr;
-  register long count;
+  JCOEFPTR inptr, outptr;
+  long count;
 
   inptr = (JCOEFPTR) input_row;
   outptr = (JCOEFPTR) output_row;
@@ -169,8 +169,8 @@ jzero_far (void FAR * target, size_t bytestozero)
 #ifdef FMEMZERO
   FMEMZERO(target, bytestozero);
 #else
-  register char FAR * ptr = (char FAR *) target;
-  register size_t count;
+  char FAR * ptr = (char FAR *) target;
+  size_t count;
 
   for (count = bytestozero; count > 0; count--) {
     *ptr++ = 0;