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Don't emit pointer to int cast warnings under -Wmicrosoft-cast

Authored by aeubanks on Mar 4 2020, 1:18 PM.

Description

Don't emit pointer to int cast warnings under -Wmicrosoft-cast

Summary:
MSVC also warns on this:
$ cat /tmp/a.c
int f(void* p) { return (int) p; }

$ cl /c /tmp/a.c
C:/src/tmp/a.c(1): warning C4311: 'type cast': pointer truncation from
'void *' to 'int'

Warnings originally added in https://reviews.llvm.org/D72231.

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D75643