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Move the declaration from gif_lib.h to gif_lib_private.h to solve
conflicts when some .c-file #includes both stdlib.h and gif_lib.h.
See also https://sourceforge.net/p/giflib/bugs/110/
diff -ur giflib-5.1.4.orig/lib/dgif_lib.c giflib-5.1.4/lib/dgif_lib.c
--- giflib-5.1.4.orig/lib/dgif_lib.c 2018-02-28 20:31:02.294682673 +0100
+++ giflib-5.1.4/lib/dgif_lib.c 2018-02-28 22:38:11.659126414 +0100
@@ -396,7 +396,7 @@
if (GifFile->SavedImages) {
SavedImage* new_saved_images =
- (SavedImage *)reallocarray(GifFile->SavedImages,
+ (SavedImage *)giflib_private_reallocarray(GifFile->SavedImages,
(GifFile->ImageCount + 1), sizeof(SavedImage));
if (new_saved_images == NULL) {
GifFile->Error = D_GIF_ERR_NOT_ENOUGH_MEM;
@@ -1108,7 +1108,7 @@
if (ImageSize > (SIZE_MAX / sizeof(GifPixelType))) {
return GIF_ERROR;
}
- sp->RasterBits = (unsigned char *)reallocarray(NULL, ImageSize,
+ sp->RasterBits = (unsigned char *)giflib_private_reallocarray(NULL, ImageSize,
sizeof(GifPixelType));
if (sp->RasterBits == NULL) {
diff -ur giflib-5.1.4.orig/lib/gifalloc.c giflib-5.1.4/lib/gifalloc.c
--- giflib-5.1.4.orig/lib/gifalloc.c 2018-02-28 20:31:02.294682673 +0100
+++ giflib-5.1.4/lib/gifalloc.c 2018-02-28 22:38:11.657126423 +0100
@@ -8,7 +8,7 @@
#include <stdio.h>
#include <string.h>
-#include "gif_lib.h"
+#include "gif_lib_private.h"
#define MAX(x, y) (((x) > (y)) ? (x) : (y))
@@ -188,7 +188,7 @@
/* perhaps we can shrink the map? */
if (RoundUpTo < ColorUnion->ColorCount) {
- GifColorType *new_map = (GifColorType *)reallocarray(Map,
+ GifColorType *new_map = (GifColorType *)giflib_private_reallocarray(Map,
RoundUpTo, sizeof(GifColorType));
if( new_map == NULL ) {
GifFreeMapObject(ColorUnion);
@@ -232,7 +232,7 @@
if (*ExtensionBlocks == NULL)
*ExtensionBlocks=(ExtensionBlock *)malloc(sizeof(ExtensionBlock));
else {
- ExtensionBlock* ep_new = (ExtensionBlock *)reallocarray
+ ExtensionBlock* ep_new = (ExtensionBlock *)giflib_private_reallocarray
(*ExtensionBlocks, (*ExtensionBlockCount + 1),
sizeof(ExtensionBlock));
if( ep_new == NULL )
@@ -325,7 +325,7 @@
if (GifFile->SavedImages == NULL)
GifFile->SavedImages = (SavedImage *)malloc(sizeof(SavedImage));
else
- GifFile->SavedImages = (SavedImage *)reallocarray(GifFile->SavedImages,
+ GifFile->SavedImages = (SavedImage *)giflib_private_reallocarray(GifFile->SavedImages,
(GifFile->ImageCount + 1), sizeof(SavedImage));
if (GifFile->SavedImages == NULL)
@@ -355,7 +355,7 @@
}
/* next, the raster */
- sp->RasterBits = (unsigned char *)reallocarray(NULL,
+ sp->RasterBits = (unsigned char *)giflib_private_reallocarray(NULL,
(CopyFrom->ImageDesc.Height *
CopyFrom->ImageDesc.Width),
sizeof(GifPixelType));
@@ -369,7 +369,7 @@
/* finally, the extension blocks */
if (sp->ExtensionBlocks != NULL) {
- sp->ExtensionBlocks = (ExtensionBlock *)reallocarray(NULL,
+ sp->ExtensionBlocks = (ExtensionBlock *)giflib_private_reallocarray(NULL,
CopyFrom->ExtensionBlockCount,
sizeof(ExtensionBlock));
if (sp->ExtensionBlocks == NULL) {
diff -ur giflib-5.1.4.orig/lib/gif_lib.h giflib-5.1.4/lib/gif_lib.h
--- giflib-5.1.4.orig/lib/gif_lib.h 2018-02-28 20:31:02.294682673 +0100
+++ giflib-5.1.4/lib/gif_lib.h 2018-02-28 20:31:43.135716712 +0100
@@ -244,9 +244,6 @@
GifPixelType ColorTransIn2[]);
extern int GifBitSize(int n);
-extern void *
-reallocarray(void *optr, size_t nmemb, size_t size);
-
/******************************************************************************
Support for the in-core structures allocation (slurp mode).
******************************************************************************/
diff -ur giflib-5.1.4.orig/lib/gif_lib_private.h giflib-5.1.4/lib/gif_lib_private.h
--- giflib-5.1.4.orig/lib/gif_lib_private.h 2018-02-28 20:31:02.294682673 +0100
+++ giflib-5.1.4/lib/gif_lib_private.h 2018-02-28 22:38:11.657126423 +0100
@@ -54,6 +54,9 @@
bool gif89;
} GifFilePrivateType;
+extern void *
+giflib_private_reallocarray(void *optr, size_t nmemb, size_t size);
+
#endif /* _GIF_LIB_PRIVATE_H */
/* end */
diff -ur giflib-5.1.4.orig/lib/openbsd-reallocarray.c giflib-5.1.4/lib/openbsd-reallocarray.c
--- giflib-5.1.4.orig/lib/openbsd-reallocarray.c 2018-02-28 20:31:02.295682659 +0100
+++ giflib-5.1.4/lib/openbsd-reallocarray.c 2018-02-28 22:38:11.656126428 +0100
@@ -27,7 +27,7 @@
#define MUL_NO_OVERFLOW ((size_t)1 << (sizeof(size_t) * 4))
void *
-reallocarray(void *optr, size_t nmemb, size_t size)
+giflib_private_reallocarray(void *optr, size_t nmemb, size_t size)
{
if ((nmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) &&
nmemb > 0 && SIZE_MAX / nmemb < size) {
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