llvm-project/clang/test/CodeGen/2009-06-14-anonymous-union-init.c
yabinc 627746581b
Reapply "[clang][CodeGen] Zero init unspecified fields in initializers in C" (#109898) (#110051)
This reverts commit d50eaac12f0cdfe27e942290942b06889ab12a8c. Also fixes
a bug calculating offsets for bit fields in the original patch.
2024-10-14 16:32:24 -07:00

20 lines
772 B
C

// RUN: %clang_cc1 %s -emit-llvm -triple x86_64-linux-gnu -o - | FileCheck %s --check-prefixes=CHECK,EMPTY
// RUN: %clang_cc1 %s -emit-llvm -triple x86_64-windows-msvc -o - | FileCheck %s --check-prefixes=CHECK,EMPTY-MSVC
// PR4390
struct sysfs_dirent {
union { struct sysfs_elem_dir { int x; } s_dir; };
unsigned short s_mode;
};
struct sysfs_dirent sysfs_root = { {}, 16877 };
// CHECK: @sysfs_root = {{.*}}global { %union.anon, i16, [2 x i8] } { %union.anon zeroinitializer, i16 16877, [2 x i8] zeroinitializer }
struct Foo {
union { struct empty {} x; };
unsigned short s_mode;
};
struct Foo foo = { {}, 16877 };
// EMPTY: @foo = {{.*}}global %struct.Foo { i16 16877 }
// EMPTY-MSVC: @foo = {{.*}}global %struct.Foo { [4 x i8] zeroinitializer, i16 16877 }