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Fix allocating negative size

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Cœur 2025-10-30 21:31:31 +01:00 • committed by Nathan Moinvaziri
parent 9a2a6be955
commit f890d80348
1 changed files with 5 additions and 2 deletions
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7
mz_strm_mem.c
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@ -167,6 +167,11 @@ int32_t mz_stream_mem_seek(void *stream, int64_t offset, int32_t origin) {
return MZ_SEEK_ERROR;
}
// While `malloc` accepts a size_t, mz_stream_mem_s.size only supports an int32_t
if (new_pos < 0 || new_pos > INT32_MAX) {
return MZ_SEEK_ERROR;
}
if (new_pos > mem->size) {
if ((mem->mode & MZ_OPEN_MODE_CREATE) == 0)
return MZ_SEEK_ERROR;
@ -174,8 +179,6 @@ int32_t mz_stream_mem_seek(void *stream, int64_t offset, int32_t origin) {
err = mz_stream_mem_set_size(stream, (int32_t)new_pos);
if (err != MZ_OK)
return err;
} else if (new_pos < 0) {
return MZ_SEEK_ERROR;
}
mem->position = (int32_t)new_pos;