43 lines
1.4 KiB
C++
43 lines
1.4 KiB
C++
// RUN: %clangxx -fsanitize=returns-nonnull-attribute -w %s -O3 -o %t
|
|
// RUN: %run %t foo 2>&1 | count 0
|
|
// RUN: %run %t 2>&1 | FileCheck %s
|
|
// RUN: %clangxx -fsanitize=returns-nonnull-attribute -fno-sanitize-recover=returns-nonnull-attribute -w %s -O3 -o %t.abort
|
|
// RUN: not %run %t.abort &> /dev/null
|
|
|
|
__attribute__((returns_nonnull)) char *foo(char *a);
|
|
|
|
char *foo(char *a) {
|
|
// CHECK: nonnull.cpp:[[@LINE+2]]:3: runtime error: null pointer returned from function declared to never return null
|
|
// CHECK-NEXT: nonnull.cpp:[[@LINE-4]]:16: note: returns_nonnull attribute specified here
|
|
return a;
|
|
}
|
|
|
|
__attribute__((returns_nonnull)) char *bar(int x, char *a) {
|
|
if (x > 10) {
|
|
// CHECK: nonnull.cpp:[[@LINE+2]]:5: runtime error: null pointer returned from function declared to never return null
|
|
// CHECK-NEXT: nonnull.cpp:[[@LINE-3]]:16: note: returns_nonnull attribute specified here
|
|
return a;
|
|
} else {
|
|
// CHECK: nonnull.cpp:[[@LINE+2]]:5: runtime error: null pointer returned from function declared to never return null
|
|
// CHECK-NEXT: nonnull.cpp:[[@LINE-7]]:16: note: returns_nonnull attribute specified here
|
|
return a;
|
|
}
|
|
}
|
|
|
|
int main(int argc, char **argv) {
|
|
char *a = argv[1];
|
|
|
|
foo(a);
|
|
|
|
bar(20, a);
|
|
|
|
// We expect to see a runtime error the first time we cover the "else"...
|
|
bar(5, a);
|
|
|
|
// ... but not a second time.
|
|
// CHECK-NOT: runtime error
|
|
bar(5, a);
|
|
|
|
return 0;
|
|
}
|