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/g++.dg/opt/vrp2.C | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 gcc/testsuite/g++.dg/opt/vrp2.C (limited to 'gcc/testsuite/g++.dg/opt/vrp2.C') diff --git a/gcc/testsuite/g++.dg/opt/vrp2.C b/gcc/testsuite/g++.dg/opt/vrp2.C new file mode 100644 index 000000000..b2066ae2e --- /dev/null +++ b/gcc/testsuite/g++.dg/opt/vrp2.C @@ -0,0 +1,20 @@ +/* { dg-do run } */ +/* { dg-options "-O2" } */ + +/* VRP was miscompiling the following as it thought &a->b was a dereference + and therfore a was non-null. + Reduced from Mozilla by Serge Belyshev . */ + +extern "C" void abort (void); +struct T { int i; } t; +struct A : T { int j; } *p = __null; + +int main (void) +{ + if (p == &t) + return 0; + if (p) + abort (); + return 0; +} + -- cgit v1.2.3