https://github.com/mugiwaraluffy56 updated https://github.com/llvm/llvm-project/pull/179031
>From 2790ecd3e25f22275c1c71fbefc022379d314621 Mon Sep 17 00:00:00 2001 From: mugiwaraluffy56 <[email protected]> Date: Sat, 31 Jan 2026 18:19:42 +0530 Subject: [PATCH] [ABITest] Use _Alignof instead of __alignof__ for ABI alignment __alignof__ returns the 'preferred' alignment which may differ from the actual ABI-required alignment on some architectures. This can give misleading results in generated layout tests. Use _Alignof (C11 standard) instead, which returns the actual ABI-required alignment of a type. Fixes #179007. --- clang/utils/ABITest/ABITestGen.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/clang/utils/ABITest/ABITestGen.py b/clang/utils/ABITest/ABITestGen.py index 119b3299ffa60..6770ef2a9bf87 100755 --- a/clang/utils/ABITest/ABITestGen.py +++ b/clang/utils/ABITest/ABITestGen.py @@ -306,7 +306,7 @@ def printSizeOfType(self, prefix, name, t, output=None, indent=2): def printAlignOfType(self, prefix, name, t, output=None, indent=2): print( - '%*sprintf("%s: __alignof__(%s) = %%ld\\n", (long)__alignof__(%s));' + '%*sprintf("%s: _Alignof(%s) = %%ld\\n", (long)_Alignof(%s));' % (indent, "", prefix, name, name), file=output, ) _______________________________________________ cfe-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
