llvm-project/clang/test/CodeGen/offsetof.c

// RUN: %clang_cc1 %s -emit-llvm -o %t

// PR2910
struct sockaddr_un {
 unsigned char sun_len;
 char sun_path[104];
};

int test(int len) {
  return __builtin_offsetof(struct sockaddr_un, sun_path[len+1]);
}
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 %s -emit-llvm -o %t`
Fix for PR2910: implement CodeGen for non-constant offsetof. Note that there are still other issues in this area; see PR3396. llvm-svn: 62942 2009-01-25 06:38:55 +08:00
			`// PR2910`
			`struct sockaddr_un {`
			`unsigned char sun_len;`
			`char sun_path[104];`
			`};`

			`int test(int len) {`
			`return __builtin_offsetof(struct sockaddr_un, sun_path[len+1]);`
			`}`