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// 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;
}
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