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Disable PCH reading/writing

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Fangrui Song 2020-06-14 23:13:09 -07:00
parent 7a05f1ed06
commit 8cf8a3c4a4
1 changed files with 6 additions and 0 deletions
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6
src/clang_tu.cc
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@ -12,6 +12,7 @@
#include <clang/Driver/Driver.h> #include <clang/Driver/Driver.h>
#include <clang/Driver/Tool.h> #include <clang/Driver/Tool.h>
#include <clang/Lex/Lexer.h> #include <clang/Lex/Lexer.h>
#include <clang/Lex/PreprocessorOptions.h>
#include <llvm/Support/Host.h> #include <llvm/Support/Host.h>
#include <llvm/Support/Path.h> #include <llvm/Support/Path.h>
@ -148,6 +149,11 @@ buildCompilerInvocation(const std::string &main, std::vector<const char *> args,
auto &isec = ci->getFrontendOpts().Inputs; auto &isec = ci->getFrontendOpts().Inputs;
if (isec.size()) if (isec.size())
isec[0] = FrontendInputFile(main, isec[0].getKind(), isec[0].isSystem()); isec[0] = FrontendInputFile(main, isec[0].getKind(), isec[0].isSystem());
// clangSerialization has an unstable format. Disable PCH reading/writing
// to work around PCH mismatch problems.
ci->getPreprocessorOpts().ImplicitPCHInclude.clear();
ci->getPreprocessorOpts().PrecompiledPreambleBytes = {0, false};
ci->getPreprocessorOpts().PCHThroughHeader.clear();
return ci; return ci;
} }