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Guard mirrored directory name allocation size

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Rohithmatham12 2026-06-10 16:26:12 -04:00
parent 5233c58e6c
commit 5e36ed43a6
1 changed files with 7 additions and 1 deletions
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8
programs/util.c
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@ -1210,9 +1210,15 @@ static char* mallocAndJoin2Dir(const char *dir1, const char *dir2)
assert(dir1 != NULL && dir2 != NULL);
{ const size_t dir1Size = strlen(dir1);
const size_t dir2Size = strlen(dir2);
size_t outDirBufferSize;
char *outDirBuffer, *buffer;
outDirBuffer = (char *) malloc(dir1Size + dir2Size + 2);
CONTROL(dir1Size <= (size_t)-1 - dir2Size);
outDirBufferSize = dir1Size + dir2Size;
CONTROL(outDirBufferSize <= (size_t)-1 - 2);
outDirBufferSize += 2;
outDirBuffer = (char *) malloc(outDirBufferSize);
CONTROL(outDirBuffer != NULL);
memcpy(outDirBuffer, dir1, dir1Size);