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Update lz4.c

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blueloveTH 2026-04-04 16:09:06 +08:00
parent 2a2e9ae1f2
commit 2600eb5352
1 changed files with 2 additions and 1 deletions
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src/modules/lz4.c
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@ -28,7 +28,8 @@ static bool lz4_decompress(int argc, py_Ref argv) {
const uint32_t* p = (uint32_t*)py_tobytes(argv, &total_size); const uint32_t* p = (uint32_t*)py_tobytes(argv, &total_size);
const char* src = (const char*)(p + 1); const char* src = (const char*)(p + 1);
if(total_size < sizeof(uint32_t)) return ValueError("invalid LZ4 data"); if(total_size < sizeof(uint32_t)) return ValueError("invalid LZ4 data");
uint32_t uncompressed_size = *p; uint32_t uncompressed_size;
memcpy(&uncompressed_size, p, sizeof(uint32_t));
if(uncompressed_size >= INT32_MAX) return ValueError("invalid LZ4 data"); if(uncompressed_size >= INT32_MAX) return ValueError("invalid LZ4 data");
char* dst = (char*)py_newbytes(py_retval(), uncompressed_size); char* dst = (char*)py_newbytes(py_retval(), uncompressed_size);
int dst_size = LZ4_decompress_safe(src, dst, total_size - sizeof(uint32_t), uncompressed_size); int dst_size = LZ4_decompress_safe(src, dst, total_size - sizeof(uint32_t), uncompressed_size);