| /* Test for the "nonnull" function attribute. */ |
| /* Origin: Jason Thorpe <thorpej@wasabisystems.com> */ |
| /* { dg-do compile } */ |
| /* { dg-options "-Wnonnull" } */ |
| |
| #include <stddef.h> |
| |
| extern void func1 (char *, char *, int) __attribute__((nonnull)); |
| |
| extern void func2 (char *, char *) __attribute__((nonnull(1))); |
| |
| extern void func3 (char *, int, char *, int) |
| __attribute__((nonnull(1,3))); |
| |
| extern void func4 (char *, char *) __attribute__((nonnull(1))) |
| __attribute__((nonnull(2))); |
| |
| void |
| foo (int i1, int i2, int i3, char *cp1, char *cp2, char *cp3) |
| { |
| func1(cp1, cp2, i1); |
| |
| func1(NULL, cp2, i1); /* { dg-warning "null" "null with argless nonnull 1" } */ |
| func1(cp1, NULL, i1); /* { dg-warning "null" "null with argless nonnull 2" } */ |
| func1(cp1, cp2, 0); |
| |
| func2(cp1, NULL); |
| func2(NULL, cp1); /* { dg-warning "null" "null with single explicit nonnull" } */ |
| |
| func3(NULL, i2, cp3, i3); /* { dg-warning "null" "null with explicit nonnull 1" } */ |
| func3(cp3, i2, NULL, i3); /* { dg-warning "null" "null with explicit nonnull 3" } */ |
| |
| func1(i1 ? cp1 : NULL, cp2, i3); /* { dg-warning "null" "null with cond expr rhs" } */ |
| func1(i1 ? NULL : cp1, cp2, i3); /* { dg-warning "null" "null with cond expr lhs" } */ |
| func1(i1 ? (i2 ? cp1 : NULL) : cp2, cp3, i3); /* { dg-warning "null" "null with nested cond expr" } */ |
| |
| func4(NULL, cp1); /* { dg-warning "null" "null with multiple attributes 1" } */ |
| func4(cp1, NULL); /* { dg-warning "null" "null with multiple attributes 2" } */ |
| } |