Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/strlenopt-5.c @ 111:04ced10e8804
gcc 7
author | kono |
---|---|
date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | |
children | 1830386684a0 |
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/* { dg-do run } */ /* { dg-options "-O2 -fdump-tree-strlen" } */ #include "strlenopt.h" __attribute__((noinline, noclone)) char * foo (char *p, const char *q) { char *e = strchr (p, '\0'); strcat (p, q); return e; } __attribute__((noinline, noclone)) char * bar (char *p) { memcpy (p, "abcd", 5); return strchr (p, '\0'); } __attribute__((noinline, noclone)) void baz (char *p) { char *e = strchr (p, '\0'); strcat (e, "abcd"); } char buf[64]; int main () { char *volatile p = buf; const char *volatile q = "ij"; memset (buf, 'v', 3); if (foo (p, q) != buf + 3 || memcmp (buf, "vvvij\0\0\0\0", 10) != 0) abort (); memset (buf, '\0', sizeof buf); if (bar (p) != buf + 4 || memcmp (buf, "abcd\0\0\0\0\0", 10) != 0) abort (); memset (buf, 'v', 2); memset (buf + 2, '\0', -2 + sizeof buf); baz (p); if (memcmp (buf, "vvabcd\0\0\0", 10) != 0) abort (); return 0; } /* { dg-final { scan-tree-dump-times "strlen \\(" 2 "strlen" } } */ /* { dg-final { scan-tree-dump-times "memcpy \\(" 2 "strlen" } } */ /* { dg-final { scan-tree-dump-times "strcpy \\(" 1 "strlen" } } */ /* { dg-final { scan-tree-dump-times "strcat \\(" 0 "strlen" } } */ /* { dg-final { scan-tree-dump-times "strchr \\(" 0 "strlen" } } */ /* { dg-final { scan-tree-dump-times "stpcpy \\(" 0 "strlen" } } */