| /* Copyright (C) 2000, 2001 Free Software Foundation. |
| |
| Ensure all expected transformations of builtin fputs occur and that |
| we honor side effects in the stream argument. |
| |
| Written by Kaveh R. Ghazi, 10/30/2000. */ |
| |
| #include <stdio.h> |
| extern void abort(void); |
| /* Declare this without args because that's what gcc does internally. |
| We want to make sure it works without a helpful prototype from us. |
| If stdio.h provides one, that is okay. */ |
| extern int fputs(); |
| |
| int main() |
| { |
| FILE *s_array[] = {stdout, NULL}, **s_ptr = s_array; |
| const char *const s1 = "hello world"; |
| |
| fputs ("", *s_ptr); |
| fputs ("\n", *s_ptr); |
| fputs ("bye", *s_ptr); |
| fputs (s1, *s_ptr); |
| fputs (s1+5, *s_ptr); |
| fputs (s1+10, *s_ptr); |
| fputs (s1+11, *s_ptr); |
| |
| /* Check side-effects when transforming fputs -> NOP. */ |
| fputs ("", *s_ptr++); |
| if (s_ptr != s_array+1 || *s_ptr != 0) |
| abort(); |
| |
| /* Check side-effects when transforming fputs -> fputc. */ |
| s_ptr = s_array; |
| fputs ("\n", *s_ptr++); |
| if (s_ptr != s_array+1 || *s_ptr != 0) |
| abort(); |
| |
| /* Check side-effects when transforming fputs -> fwrite. */ |
| s_ptr = s_array; |
| fputs ("hello\n", *s_ptr++); |
| if (s_ptr != s_array+1 || *s_ptr != 0) |
| abort(); |
| |
| /* Test at least one instance of the __builtin_ style. We do this |
| to ensure that it works and that the prototype is correct. */ |
| s_ptr = s_array; |
| __builtin_fputs ("", *s_ptr); |
| /* These builtin stubs are called by __builtin_fputs, ensure their |
| prototypes are set correctly too. */ |
| __builtin_fputc ('\n', *s_ptr); |
| __builtin_fwrite ("hello\n", 1, 6, *s_ptr); |
| |
| return 0; |
| } |
| |
| #ifdef __OPTIMIZE__ |
| /* When optimizing, all the above cases should be transformed into |
| something else. So any remaining calls to the original function |
| should abort. */ |
| static int |
| fputs(const char *string, FILE *stream) |
| { |
| abort(); |
| } |
| #endif |