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view clang/test/CodeGen/2009-02-13-zerosize-union-field.c @ 207:2e18cbf3894f
LLVM12
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Tue, 08 Jun 2021 06:07:14 +0900 |
parents | 1d019706d866 |
children | c4bab56944e8 |
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// RUN: %clang_cc1 %s -triple i686-apple-darwin -emit-llvm -o - | FileCheck %s // Every printf has 'i32 0' for the GEP of the string; no point counting those. typedef unsigned int Foo __attribute__((aligned(32))); typedef union{Foo:0;}a; typedef union{int x; Foo:0;}b; extern int printf(const char*, ...); int main() { // CHECK: getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i32 0, i32 0), i32 0 printf("%ld\n", sizeof(a)); // CHECK: getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i32 0, i32 0), i32 1 printf("%ld\n", __alignof__(a)); // CHECK: getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i32 0, i32 0), i32 4 printf("%ld\n", sizeof(b)); // CHECK: getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i32 0, i32 0), i32 4 printf("%ld\n", __alignof__(b)); }