[libc-commits] [libc] [libc][NFC] Workaround for environ_internal when building with gcc-12. (PR #196471)

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llvmorg-github-actions[bot] wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-libc

Author: lntue

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/196471.diff


1 Files Affected:

- (modified) libc/src/stdlib/CMakeLists.txt (+10) 


``````````diff
diff --git a/libc/src/stdlib/CMakeLists.txt b/libc/src/stdlib/CMakeLists.txt
index 1185f1a0fa461..7e587235447b0 100644
--- a/libc/src/stdlib/CMakeLists.txt
+++ b/libc/src/stdlib/CMakeLists.txt
@@ -67,12 +67,22 @@ add_entrypoint_object(
     .environ_internal
 )
 
+# GCC-12 crashed when building environ_internal during GIMPLE pass: waccess.
+set(environ_internal_gcc12_workaround "")
+if((${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU") AND
+   (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "12") AND
+   (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "13"))
+  set(environ_internal_gcc12_workaround "-Wno-stringop-overflow")
+endif()
+
 add_object_library(
   environ_internal
   SRCS
     environ_internal.cpp
   HDRS
     environ_internal.h
+  COMPILE_OPTIONS
+    ${environ_internal_gcc12_workaround}
   DEPENDS
     libc.config.app_h
     libc.hdr.types.size_t

``````````

</details>


https://github.com/llvm/llvm-project/pull/196471