[PATCH] Add a -verify-pch option to clang -cc1

[Argyrios Kyrtzidis]

On Jan 20, 2014, at 11:12 AM, Ben Langmuir <blangmuir at apple.com> wrote:

> Add a CC1 option ‘-verify-pch’ that will load the given pch file and verify it as if it were being passed in -include-pch
> 
> The rationale for this option was discussed here: http://lists.cs.uiuc.edu/pipermail/cfe-dev/2013-November/033486.html
> 
> If this patch is okay, then I also intend to change the ASTReader to stat system header input files when using -verify-pch (but keep the current behavior otherwise).

Looks good!
Could you also add a driver option (maybe "--verify-pch") ?

> 
> Ben
> 
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