8fa2e93538
This aligns the behaviour with that of disabling optimisations for the translation unit entirely. Not merging the traps allows us to keep separate debug information for each, improving the debugging experience when finding the cause for a ubsan trap. Differential Revision: https://reviews.llvm.org/D137714
25 lines
911 B
C
25 lines
911 B
C
// RUN: %clang_cc1 -emit-llvm -disable-llvm-passes -O -fsanitize=signed-integer-overflow -fsanitize-trap=signed-integer-overflow %s -o - -debug-info-kind=line-tables-only | FileCheck %s
|
|
|
|
|
|
void foo(volatile int a) {
|
|
// CHECK-LABEL: @foo
|
|
// CHECK: call void @llvm.ubsantrap(i8 0){{.*}} !dbg [[LOC:![0-9]+]]
|
|
a = a + 1;
|
|
a = a + 1;
|
|
}
|
|
|
|
void bar(volatile int a) __attribute__((optnone)) {
|
|
// CHECK-LABEL: @bar
|
|
// CHECK: call void @llvm.ubsantrap(i8 0){{.*}} !dbg [[LOC2:![0-9]+]]
|
|
// CHECK: call void @llvm.ubsantrap(i8 0){{.*}} !dbg [[LOC3:![0-9]+]]
|
|
a = a + 1;
|
|
a = a + 1;
|
|
}
|
|
|
|
// With optimisations enabled the traps are merged and need to share a debug location
|
|
// CHECK: [[LOC]] = !DILocation(line: 0
|
|
|
|
// With optimisations disabled the traps are not merged and retain accurate debug locations
|
|
// CHECK: [[LOC2]] = !DILocation(line: 15, column: 9
|
|
// CHECK: [[LOC3]] = !DILocation(line: 16, column: 9
|