llvm-project/clang/test/CodeGen/empty-union-init.c

// RUN: %clang_cc1 -emit-llvm < %s -o -
// PR2419

struct Mem {
        union {
        } u;
};

struct Mem *columnMem(){
        static const struct Mem nullMem = { {} };
}
Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'. - This is designed to make it obvious that %clang_cc1 is a "test variable" which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it can be useful to redefine what gets run as 'clang -cc1' (for example, to set a default target). llvm-svn: 91446 2009-12-16 04:14:24 +08:00			`// RUN: %clang_cc1 -emit-llvm < %s -o -`
"This moves built-in Objective-C types up the scope chains to where they can be replaced by versions included from the runtime library's headers." This makes it ok to use @"foo" without a declaration for NSConstantString. Patch by David Chisnall! llvm-svn: 52593 2008-06-22 04:20:39 +08:00			`// PR2419`
Reorganize this loop a bit so it doesn't crash for empty unions. Fixes PR2419. llvm-svn: 52060 2008-06-07 04:12:37 +08:00
			`struct Mem {`
			`union {`
			`} u;`
			`};`

			`struct Mem *columnMem(){`
			`static const struct Mem nullMem = { {} };`
			`}`