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Diffstat (limited to 'core/fxcrt/cfx_readonlymemorystream.cpp')
-rw-r--r--core/fxcrt/cfx_readonlymemorystream.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/core/fxcrt/cfx_readonlymemorystream.cpp b/core/fxcrt/cfx_readonlymemorystream.cpp
index a01ed2e474..0a1a53a456 100644
--- a/core/fxcrt/cfx_readonlymemorystream.cpp
+++ b/core/fxcrt/cfx_readonlymemorystream.cpp
@@ -21,7 +21,7 @@ FX_FILESIZE CFX_ReadOnlyMemoryStream::GetSize() {
bool CFX_ReadOnlyMemoryStream::ReadBlock(void* buffer,
FX_FILESIZE offset,
size_t size) {
- if (offset < 0)
+ if (!buffer || offset < 0 || size == 0)
return false;
FX_SAFE_SIZE_T pos = size;