forked from qt-creator/qt-creator
7acbef5a90
This clang patch makes llvm avoid using memory map which makes llvm work without locking files. Without that patch the user is sometimes unable to save files in qt creator. Task-number: QTCREATORBUG-15449 Change-Id: Iab77a758174d153f860edb2f419b6ab767571964 Reviewed-by: Marco Bubke <marco.bubke@qt.io>
17 lines
676 B
Diff
17 lines
676 B
Diff
diff --git a/lib/Support/MemoryBuffer.cpp b/lib/Support/MemoryBuffer.cpp
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index b935cbf1ae7..3c9a25062f5 100644
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--- a/lib/Support/MemoryBuffer.cpp
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+++ b/lib/Support/MemoryBuffer.cpp
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@@ -286,6 +286,11 @@ static bool shouldUseMmap(int FD,
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bool RequiresNullTerminator,
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int PageSize,
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bool IsVolatileSize) {
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+#ifdef _WIN32
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+ // Do not use mmap on Windows in order to avoid file locking
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+ return false;
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+#endif
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+
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// mmap may leave the buffer without null terminator if the file size changed
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// by the time the last page is mapped in, so avoid it if the file size is
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// likely to change.
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