llvm-project/clang/test/CodeGen/catch-nullptr-and-nonzero-offset-in-offsetof-idiom.c
Nikita Popov 532dc62b90 [OpaquePtrs][Clang] Add -no-opaque-pointers to tests (NFC)
This adds -no-opaque-pointers to clang tests whose output will
change when opaque pointers are enabled by default. This is
intended to be part of the migration approach described in
https://discourse.llvm.org/t/enabling-opaque-pointers-by-default/61322/9.

The patch has been produced by replacing %clang_cc1 with
%clang_cc1 -no-opaque-pointers for tests that fail with opaque
pointers enabled. Worth noting that this doesn't cover all tests,
there's a remaining ~40 tests not using %clang_cc1 that will need
a followup change.

Differential Revision: https://reviews.llvm.org/D123115
2022-04-07 12:09:47 +02:00

37 lines
1.2 KiB
C

// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
// RUN: %clang_cc1 -no-opaque-pointers -x c -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s
// RUN: %clang_cc1 -no-opaque-pointers -x c -fsanitize=pointer-overflow -fno-sanitize-recover=pointer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s
// RUN: %clang_cc1 -no-opaque-pointers -x c++ -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s
// RUN: %clang_cc1 -no-opaque-pointers -x c++ -fsanitize=pointer-overflow -fno-sanitize-recover=pointer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
struct S {
int x, y;
};
// CHECK-LABEL: @get_offset_of_y_naively(
// CHECK-NEXT: entry:
// CHECK-NEXT: ret i64 ptrtoint (i32* getelementptr inbounds ([[STRUCT_S:%.*]], %struct.S* null, i32 0, i32 1) to i64)
//
uintptr_t get_offset_of_y_naively(void) {
return ((uintptr_t)(&(((struct S *)0)->y)));
}
// CHECK-LABEL: @get_offset_of_y_via_builtin(
// CHECK-NEXT: entry:
// CHECK-NEXT: ret i64 4
//
uintptr_t get_offset_of_y_via_builtin(void) {
return __builtin_offsetof(struct S, y);
}
#ifdef __cplusplus
}
#endif