From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/gcc.dg/pr11864-1.c | 42 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/pr11864-1.c (limited to 'gcc/testsuite/gcc.dg/pr11864-1.c') diff --git a/gcc/testsuite/gcc.dg/pr11864-1.c b/gcc/testsuite/gcc.dg/pr11864-1.c new file mode 100644 index 000000000..b8d713419 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr11864-1.c @@ -0,0 +1,42 @@ +/* PR optimization/11864 + * Reporter: Kazumoto Kojima + * Summary: [3.3/3.4 regression] miscompiles zero extension and test + * Description: + * gcc-3.3/3.4 -O2 for sh target may miscompile the combination of zero extension + * and test if it's zero. + * + * Testcase tweaked by dank@kegel.com. Not marked as xfail because it's a regression. + */ +/* { dg-do run } */ +/* { dg-options "-O2" } */ + +extern void abort(void); + +int val = 0xff00; + +int f(void) +{ + return val; +} + +unsigned char a[1]; + +void foo(void) +{ + a[0] = f() & 255; + + if (!a[0]) + a[0] = f() & 255; + + if (!a[0]) + a[0] = 1 + (f() & 127); +} + +int main(int argc, char **argv) +{ + foo(); + if (!a[0]) + abort(); + + return 0; +} -- cgit v1.2.3