[PATCH] D78767: [Sema] Teach -Wcast-align to compute a more accurate alignment when the source expression has array subscript or pointer arithmetic operators

[Akira Hatanaka via Phabricator via cfe-commits]

ahatanak created this revision.
ahatanak added reviewers: arphaman, erik.pilkington, rjmccall.
ahatanak added a project: clang.
Herald added subscribers: ributzka, dexonsmith, jkorous.

This improves upon https://reviews.llvm.org/D21099, which taught -Wcast-align to look at the aligned attribute of variables. I added a function that computes a more accurate alignment to `ExprConstant.cpp`.

rdar://problem/59242343


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D78767

Files:
  clang/include/clang/AST/Expr.h
  clang/lib/AST/ExprConstant.cpp
  clang/lib/Sema/SemaChecking.cpp
  clang/test/Sema/warn-cast-align.c

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