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| author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
|---|---|---|
| committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
| commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
| tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/gcc.dg/fwrapv-2.c | |
| parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
| download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip | |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/fwrapv-2.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/fwrapv-2.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/fwrapv-2.c b/gcc-4.9/gcc/testsuite/gcc.dg/fwrapv-2.c new file mode 100644 index 000000000..cb4270e0e --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/fwrapv-2.c @@ -0,0 +1,28 @@ +/* Copyright (C) 2003 Free Software Foundation. + + Test that the -fno-wrapv command line option is accepted and enables + "unsafe" optimizations that rely on undefined arithmetic overflow. + + Written by Roger Sayle, 31st May 2003. */ + +/* { dg-do run } */ +/* { dg-options "-O2 -fno-wrapv" } */ + +#include <limits.h> + +extern void abort (); + +int test(int x) +{ + return (2*x)/2; +} + +main() +{ + int x = INT_MAX; + + if (test(x) != x) + abort (); + return 0; +} + |