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Author SHA1 Message Date
Argyrios Kyrtzidis 14c32e8894 [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
 2011-09-12 18:09:38 +00:00