Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/strlenopt-8.c @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
---|---|
date | Thu, 13 Feb 2020 11:34:05 +0900 |
parents | 04ced10e8804 |
children |
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/* { dg-do run } */ /* { dg-options "-O2 -fdump-tree-strlen" } */ #include "strlenopt.h" /* Yes, there are people who write code like this. */ __attribute__((noinline, noclone)) char * foo (int r) { char buf[10] = ""; strcat (buf, r ? "r" : "w"); strcat (buf, "b"); return strdup (buf); } __attribute__((noinline, noclone)) char * bar (int r) { char buf[10] = {}; strcat (buf, r ? "r" : "w"); strcat (buf, "b"); return strdup (buf); } int main () { char *q = foo (1); if (q != NULL) { if (strcmp (q, "rb")) abort (); free (q); } q = bar (0); if (q != NULL) { if (strcmp (q, "wb")) abort (); free (q); } return 0; } /* { dg-final { scan-tree-dump-times "strlen \\(" 0 "strlen1" } } */ /* { dg-final { scan-tree-dump-times "strcpy \\(" 0 "strlen1" } } */ /* { dg-final { scan-tree-dump-times "strcat \\(" 0 "strlen1" } } */ /* { dg-final { scan-tree-dump-times "strchr \\(" 0 "strlen1" } } */ /* { dg-final { scan-tree-dump-times "stpcpy \\(" 0 "strlen1" } } */