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| author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
|---|---|---|
| committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
| commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
| tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gcc.c-torture/execute/compare-2.c | |
| download | cbb-gcc-4.6.4-upstream.tar.bz2 cbb-gcc-4.6.4-upstream.tar.xz | |
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Diffstat (limited to 'gcc/testsuite/gcc.c-torture/execute/compare-2.c')
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/compare-2.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/compare-2.c b/gcc/testsuite/gcc.c-torture/execute/compare-2.c new file mode 100644 index 000000000..858df294e --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/compare-2.c @@ -0,0 +1,24 @@ +/* Copyright (C) 2002 Free Software Foundation. + + Ensure that the composite comparison optimization doesn't misfire + and attempt to combine a signed comparison with an unsigned one. + + Written by Roger Sayle, 3rd June 2002. */ + +extern void abort (void); + +int +foo (int x, int y) +{ + /* If miscompiled the following may become "x == y". */ + return (x<=y) && ((unsigned int)x >= (unsigned int)y); +} + +int +main () +{ + if (! foo (-1,0)) + abort (); + return 0; +} + |