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-rw-r--r--lib/Frontend/ASTUnit.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Frontend/ASTUnit.cpp b/lib/Frontend/ASTUnit.cpp
index d67a6652da..a035cd89f6 100644
--- a/lib/Frontend/ASTUnit.cpp
+++ b/lib/Frontend/ASTUnit.cpp
@@ -789,7 +789,8 @@ ASTUnit *ASTUnit::LoadFromCompilerInvocation(CompilerInvocation *CI,
CI->getPreprocessorOpts().RetainRemappedFileBuffers = true;
llvm::MemoryBuffer *OverrideMainBuffer = 0;
- if (PrecompilePreamble)
+ // FIXME: When C++ PCH is ready, allow use of it for a precompiled preamble.
+ if (PrecompilePreamble && !CI->getLangOpts().CPlusPlus)
OverrideMainBuffer = AST->BuildPrecompiledPreamble();
if (!AST->Parse(OverrideMainBuffer))