diff options
Diffstat (limited to 'gcc/testsuite/gcc.c-torture/execute/builtins/strcpy-2.c')
-rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/builtins/strcpy-2.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/builtins/strcpy-2.c b/gcc/testsuite/gcc.c-torture/execute/builtins/strcpy-2.c new file mode 100644 index 000000000..c3cb6d0e5 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/builtins/strcpy-2.c @@ -0,0 +1,47 @@ +/* Copyright (C) 2004 Free Software Foundation. + + Ensure builtin strcpy is optimized into memcpy + even when there is more than one possible string literal + passed to it, but all string literals passed to it + have equal length. + + Written by Jakub Jelinek, 9/15/2004. */ + +extern void abort (void); +extern char *strcpy (char *, const char *); +typedef __SIZE_TYPE__ size_t; +extern void *memcpy (void *, const void *, size_t); +extern int memcmp (const void *, const void *, size_t); + +char buf[32], *p; +int i; + +char * +__attribute__((noinline)) +test (void) +{ + int j; + const char *q = "abcdefg"; + for (j = 0; j < 3; ++j) + { + if (j == i) + q = "bcdefgh"; + else if (j == i + 1) + q = "cdefghi"; + else if (j == i + 2) + q = "defghij"; + } + p = strcpy (buf, q); + return strcpy (buf + 16, q); +} + +void +main_test (void) +{ +#ifndef __OPTIMIZE_SIZE__ + /* For -Os, strcpy above is not replaced with + memcpy (buf, q, 8);, as that is larger. */ + if (test () != buf + 16 || p != buf) + abort (); +#endif +} |