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make av_strdup(NULL) return NULL

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Originally committed as revision 13250 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-05-23 12:37:32 +00:00
parent 30897e764a
commit fdf35f265a
1 changed files with 3 additions and 1 deletions
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4
libavutil/mem.c
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@ -139,11 +139,13 @@ void *av_mallocz(unsigned int size)
char *av_strdup(const char *s) char *av_strdup(const char *s)
{ {
char *ptr; char *ptr= NULL;
if(s){
int len = strlen(s) + 1; int len = strlen(s) + 1;
ptr = av_malloc(len); ptr = av_malloc(len);
if (ptr) if (ptr)
memcpy(ptr, s, len); memcpy(ptr, s, len);
}
return ptr; return ptr;
} }