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-rw-r--r--zenstore/basicfile.cpp5
1 files changed, 4 insertions, 1 deletions
diff --git a/zenstore/basicfile.cpp b/zenstore/basicfile.cpp
index 29ca0e388..17a57309d 100644
--- a/zenstore/basicfile.cpp
+++ b/zenstore/basicfile.cpp
@@ -287,9 +287,12 @@ BasicFile::SetFileSize(uint64_t FileSize)
liFileSize.QuadPart = FileSize;
::SetFilePointerEx(m_FileHandle, liFileSize, 0, FILE_BEGIN);
::SetEndOfFile(m_FileHandle);
+#elif ZEN_PLATFORM_MAC
+ int Fd = int(intptr_t(m_FileHandle));
+ ftruncate(fileno(Fd), (off_t)FileSize);
#else
int Fd = int(intptr_t(m_FileHandle));
- ftruncate64(Fd, FileSize);
+ ftruncate64(fileno(Fd), (off64_t)FileSize);
#endif
}