[PATCH] D19727: [MS] Improved implementation #pragma pack (MS pragmas, part 2)

[Denis Zobnin via cfe-commits]

d.zobnin.bugzilla created this revision.
d.zobnin.bugzilla added a reviewer: rnk.
d.zobnin.bugzilla added subscribers: thakis, cfe-commits.

An attempt to make implementation of #pragma pack consistent with other "stack" pragmas. Also modifies #pragma options align, since it shares the stack with #pragma pack.
It is the first item from todo list in http://reviews.llvm.org/D19361

The patch doesn't change compiler's behavior, so the tests are not modified.
I'm planning to rework the pragmas' diagnostics in next patch -- it should be a common feature of all "stack" pragmas.

http://reviews.llvm.org/D19727

Files:
  include/clang/Sema/Sema.h
  lib/Parse/ParsePragma.cpp
  lib/Sema/Sema.cpp
  lib/Sema/SemaAttr.cpp

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