| // RUN: %clang_cc1 -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefixes=CHECK,CHECK-NOSANITIZE |
| // RUN: %clang_cc1 -fsanitize=alignment -fno-sanitize-recover=alignment -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_alignment_assumption" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-ANYRECOVER,CHECK-SANITIZE-NORECOVER,CHECK-SANITIZE-UNREACHABLE |
| // RUN: %clang_cc1 -fsanitize=alignment -fsanitize-recover=alignment -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_alignment_assumption" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-ANYRECOVER,CHECK-SANITIZE-RECOVER |
| // RUN: %clang_cc1 -fsanitize=alignment -fsanitize-trap=alignment -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_alignment_assumption" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-TRAP,CHECK-SANITIZE-UNREACHABLE |
| |
| typedef char **__attribute__((align_value(0x80000000))) aligned_char; |
| |
| struct ac_struct { |
| // CHECK: %[[STRUCT_AC_STRUCT:.*]] = type { i8** } |
| aligned_char a; |
| }; |
| |
| // CHECK-SANITIZE-ANYRECOVER: @[[ALIGNED_CHAR:.*]] = {{.*}} c"'aligned_char' (aka 'char **')\00" } |
| // CHECK-SANITIZE-ANYRECOVER: @[[LINE_100_ALIGNMENT_ASSUMPTION:.*]] = {{.*}}, i32 100, i32 13 }, {{.*}}* @[[ALIGNED_CHAR]] } |
| |
| char **load_from_ac_struct(struct ac_struct *x) { |
| // CHECK: define i8** @{{.*}}(%[[STRUCT_AC_STRUCT]]* %[[X:.*]]) |
| // CHECK-NEXT: [[ENTRY:.*]]: |
| // CHECK-NEXT: %[[STRUCT_AC_STRUCT_ADDR:.*]] = alloca %[[STRUCT_AC_STRUCT]]*, align 8 |
| // CHECK-NEXT: store %[[STRUCT_AC_STRUCT]]* %[[X]], %[[STRUCT_AC_STRUCT]]** %[[STRUCT_AC_STRUCT_ADDR]], align 8 |
| // CHECK-NEXT: %[[X_RELOADED:.*]] = load %[[STRUCT_AC_STRUCT]]*, %[[STRUCT_AC_STRUCT]]** %[[STRUCT_AC_STRUCT_ADDR]], align 8 |
| // CHECK: %[[A_ADDR:.*]] = getelementptr inbounds %[[STRUCT_AC_STRUCT]], %[[STRUCT_AC_STRUCT]]* %[[X_RELOADED]], i32 0, i32 0 |
| // CHECK: %[[A:.*]] = load i8**, i8*** %[[A_ADDR]], align 8 |
| // CHECK-NEXT: %[[PTRINT:.*]] = ptrtoint i8** %[[A]] to i64 |
| // CHECK-NEXT: %[[MASKEDPTR:.*]] = and i64 %[[PTRINT]], 2147483647 |
| // CHECK-NEXT: %[[MASKCOND:.*]] = icmp eq i64 %[[MASKEDPTR]], 0 |
| // CHECK-SANITIZE-NEXT: %[[PTRINT_DUP:.*]] = ptrtoint i8** %[[A]] to i64, !nosanitize |
| // CHECK-SANITIZE-NEXT: br i1 %[[MASKCOND]], label %[[CONT:.*]], label %[[HANDLER_ALIGNMENT_ASSUMPTION:[^,]+]],{{.*}} !nosanitize |
| // CHECK-SANITIZE: [[HANDLER_ALIGNMENT_ASSUMPTION]]: |
| // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_alignment_assumption_abort(i8* bitcast ({ {{{.*}}}, {{{.*}}}, {{{.*}}}* }* @[[LINE_100_ALIGNMENT_ASSUMPTION]] to i8*), i64 %[[PTRINT_DUP]], i64 2147483648, i64 0){{.*}}, !nosanitize |
| // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_alignment_assumption(i8* bitcast ({ {{{.*}}}, {{{.*}}}, {{{.*}}}* }* @[[LINE_100_ALIGNMENT_ASSUMPTION]] to i8*), i64 %[[PTRINT_DUP]], i64 2147483648, i64 0){{.*}}, !nosanitize |
| // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.trap(){{.*}}, !nosanitize |
| // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize |
| // CHECK-SANITIZE: [[CONT]]: |
| // CHECK-NEXT: call void @llvm.assume(i1 %[[MASKCOND]]) |
| // CHECK-NEXT: ret i8** %[[A]] |
| // CHECK-NEXT: } |
| #line 100 |
| return x->a; |
| } |
