[cfe-dev] Define macro in program manually

[Wen-Han Gu]

Hi all,

I want to define macro by hand before running compile.

In code, I already setup a clang::Preprocessor.
I use:

  mPP->setMacroInfo(&mPP->getIdentifierTable().get("__cplusplus"),
                                new
clang::MacroInfo( mSourceMgr->getLocForStartOfFile( mSourceMgr->getMainFileID()
) ) );

But it segmentation fault and this is backtrace:

#0  llvm::StringMapImpl::LookupBucketFor (this=0xac, Name=...) at
external/llvm/lib/Support/StringMap.cpp:56
#1  0x0805d180 in GetOrCreateValue<clang::IdentifierInfo*> (this=0xffea172c)
at external/llvm/include/llvm/ADT/StringMap.h:370
#2  llvm::StringMap<clang::IdentifierInfo*,
llvm::BumpPtrAllocator>::GetOrCreateValue (this=0xffea172c) at
external/llvm/include/llvm/ADT/StringMap.h:392
#3  clang::IdentifierTable::get (this=0xffea172c) at
external/clang/include/clang/Basic/IdentifierTable.h:362
#4  pndk::Compiler::setMacro (this=0xffea172c) at Compiler.cpp:269
#5  0x0805b259 in main (argc=8, argv=0xffea1a84) at Driver.cpp:71

I have no experience and no idea on clang macro handling.
Could someone help?

Big thanks!


-- 
Best regards,
Wen-Han
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