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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.dg/] [builtin-strncat-chk-1.c] - Rev 307
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/* Test whether buffer overflow warnings for __strncat_chk builtin are emitted properly. */ /* { dg-do compile } */ /* { dg-options "-O2 -std=gnu99" } */ extern void abort (void); #include "../gcc.c-torture/execute/builtins/chk.h" char buf1[20]; char *q; void test (int arg, ...) { char *p = &buf1[10]; *p = 0; strncat (p, "abcdefg", 9); *p = 0; strncat (p, "abcdefghi", 9); *p = 0; strncat (p, "abcdefghij", 9); *p = 0; strncat (p, "abcdefghi", 10); *p = 0; strncat (p, "abcdefghij", 10); /* { dg-warning "will always overflow" } */ *p = 0; strncat (p, "abcdefgh", 11); *p = 0; strncat (p, "abcdefghijkl", 11); /* { dg-warning "will always overflow" } */ *p = 0; strncat (p, q, 9); *p = 0; strncat (p, q, 10); /* { dg-warning "might overflow" } */ *p = 0; strncat (p, q, 11); /* { dg-warning "might overflow" } */ }
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