[PATCH] D23657: Remove some false positives when taking the address of packed members

[Roger Ferrer Ibanez via cfe-commits]

rogfer01 updated this revision to Diff 73466.
rogfer01 added a comment.

Change algorithm following @rsmith suggestions by computing the offset of the whole access and compare it against the expected alignment, so reduced aligned structs inside overaligned structs does not yield a warning.

Also ignore parentheses where necessary, which was effectively preventing silencing some false positives.

Includes testcases suggested by @rsmith and @joerg.


https://reviews.llvm.org/D23657

Files:
  include/clang/Sema/Sema.h
  lib/Sema/SemaChecking.cpp
  test/Sema/address-packed.c

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