1// RUN: %clang_builtins %s %librt -fnested-functions -o %t && %run %t
2// REQUIRES: librt_has_trampoline_setup
3
4#include <stdio.h>
5#include <string.h>
6#include <stdint.h>
7
8/*
9 * Tests nested functions
10 * The ppc compiler generates a call to __trampoline_setup
11 * The i386 and x86_64 compilers generate a call to ___enable_execute_stack
12 */
13
14/*
15 * Note that, nested functions are not ISO C and are not supported in Clang.
16 */
17
18#if !defined(__clang__)
19
20typedef int (*nested_func_t)(int x);
21
22nested_func_t proc;
23
24int main() {
25 /* Some locals */
26 int c = 10;
27 int d = 7;
28
29 /* Define a nested function: */
30 int bar(int x) { return x*5 + c*d; };
31
32 /* Assign global to point to nested function
33 * (really points to trampoline). */
34 proc = bar;
35
36 /* Invoke nested function: */
37 c = 4;
38 if ( (*proc)(3) != 43 )
39 return 1;
40 d = 5;
41 if ( (*proc)(4) != 40 )
42 return 1;
43
44 /* Success. */
45 return 0;
46}
47
48#else
49
50int main() {
51 printf("skipped\n");
52 return 0;
53}
54
55#endif
56