diff options
| author | Richard Biener <rguenther@suse.de> | 2014-07-28 08:47:38 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2014-07-28 08:47:38 +0000 |
| commit | 2637bd27e86c30bce73f6753e922b1b2f03ad47d (patch) | |
| tree | 50c7abb69f3b2210ca85d4268d2632528cf587c0 /gcc/testsuite | |
| parent | 02b278a886da80a9432453993f5310cd760ca956 (diff) | |
| download | gcc-2637bd27e86c30bce73f6753e922b1b2f03ad47d.zip gcc-2637bd27e86c30bce73f6753e922b1b2f03ad47d.tar.gz gcc-2637bd27e86c30bce73f6753e922b1b2f03ad47d.tar.bz2 | |
re PR middle-end/52478 (-ftrapv calls the wrong functions in libgcc)
2014-07-28 Richard Biener <rguenther@suse.de>
PR middle-end/52478
* optabs.c (gen_int_libfunc): For -ftrapv libfuncs make
sure to register SImode ones, not only >= word_mode ones.
* expr.c (expand_expr_real_2): When expanding -ftrapv
binops do not use OPTAB_LIB_WIDEN.
* gcc.dg/torture/ftrapv-1.c: New testcase.
From-SVN: r213117
Diffstat (limited to 'gcc/testsuite')
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/ftrapv-1.c | 37 |
2 files changed, 42 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 68499d9..014896c 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,10 @@ 2014-07-28 Richard Biener <rguenther@suse.de> + PR middle-end/52478 + * gcc.dg/torture/ftrapv-1.c: New testcase. + +2014-07-28 Richard Biener <rguenther@suse.de> + PR tree-optimization/61921 * gfortran.dg/pr61921.f90: New testcase. diff --git a/gcc/testsuite/gcc.dg/torture/ftrapv-1.c b/gcc/testsuite/gcc.dg/torture/ftrapv-1.c new file mode 100644 index 0000000..4fdccd8 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/ftrapv-1.c @@ -0,0 +1,37 @@ +/* { dg-do run } */ +/* { dg-additional-options "-ftrapv" } */ +/* { dg-require-effective-target trapping } */ +/* { dg-require-fork } */ + +#include <stdlib.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/wait.h> + +/* Verify SImode operations properly trap. PR middle-end/52478 */ + +/* Disallow inlining/cloning which would constant propagate and trigger + unrelated bugs. */ + +int __attribute__((noinline,noclone)) +iaddv (int a, int b) +{ + return a + b; +} + +int main(void) +{ + pid_t child = fork (); + int status = 0; + if (child == 0) + { + volatile int x = iaddv (__INT_MAX__, 1); + exit (0); + } + else if (child == -1) + return 0; + if (wait (&status) == child + && status == 0) + abort (); + return 0; +} |