tree f13f077dad332226274079842e93f7628071be8d
parent 4695f91f4302a90ae462cd64dda59b34c3dad821
author David Blaikie <dblaikie@gmail.com> 1350413594 +0000
committer David Blaikie <dblaikie@gmail.com> 1350413594 +0000

Implement GCC's -Wint-to-pointer-cast.

This implementation doesn't warn on anything that GCC doesn't warn on with the
exception of templates specializations (GCC doesn't warn, Clang does). The
specific skipped cases (boolean, constant expressions, enums) are open for
debate/adjustment if anyone wants to demonstrate that GCC is being overly
conservative here. The only really obvious false positive I found was in the
Clang regression suite's MPI test - apparently MPI uses specific flag values in
pointer constants. (eg: #define FOO (void*)~0)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166039 91177308-0d34-0410-b5e6-96231b3b80d8