diff options
Diffstat (limited to 'gcc/testsuite/gcc.c-torture/execute/string-opt-17.c')
-rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/string-opt-17.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/string-opt-17.c b/gcc/testsuite/gcc.c-torture/execute/string-opt-17.c new file mode 100644 index 000000000..76a351bfb --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/string-opt-17.c @@ -0,0 +1,45 @@ +/* Copyright (C) 2003 Free Software Foundation. + + Test strcpy optimizations don't evaluate side-effects twice. + + Written by Jakub Jelinek, June 23, 2003. */ + +typedef __SIZE_TYPE__ size_t; +extern char *strcpy (char *, const char *); +extern int memcmp (const void *, const void *, size_t); +extern void abort (void); +extern void exit (int); + +size_t +test1 (char *s, size_t i) +{ + strcpy (s, "foobarbaz" + i++); + return i; +} + +size_t +check2 (void) +{ + static size_t r = 5; + if (r != 5) + abort (); + return ++r; +} + +void +test2 (char *s) +{ + strcpy (s, "foobarbaz" + check2 ()); +} + +int +main (void) +{ + char buf[10]; + if (test1 (buf, 7) != 8 || memcmp (buf, "az", 3)) + abort (); + test2 (buf); + if (memcmp (buf, "baz", 4)) + abort (); + exit (0); +} |