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[libclang] In ASTUnit::Parse copy the CompilerInvocation object instead of modifying directly for the preamble. This avoids an awful, hard to find, bug where "PreprocessorOpts.DisablePCHValidation = true" would be persistent for subsequent reparses of the translation unit which would result in defines, present in command-line but not in the PCH, being ignored. Fixes rdar://9615399. llvm-svn: 139512
2011-09-13 02:09:38 +08:00
extern int x;