[PATCH] D136712: Define _GNU_SOURCE for arm baremetal in C++ mode.

[Fangrui Song via Phabricator via cfe-commits]

MaskRay added inline comments.


================
Comment at: clang/test/Driver/arm-baremetal-defines.cpp:1
+// RUN: %clang --target=arm-none-eabi -march=armv7-m %s -emit-llvm -S -c -o - 2>&1 | FileCheck %s
+
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MaskRay wrote:
> Move this to `test/Preprocessor/init-arm.c`
test/Preprocessor/init-* tests use `%clang_cc1 -triple xxx -E -dM %s` 


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  https://reviews.llvm.org/D136712/new/

https://reviews.llvm.org/D136712