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/abi/offsetof.C | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 gcc/testsuite/g++.dg/abi/offsetof.C (limited to 'gcc/testsuite/g++.dg/abi/offsetof.C') diff --git a/gcc/testsuite/g++.dg/abi/offsetof.C b/gcc/testsuite/g++.dg/abi/offsetof.C new file mode 100644 index 000000000..d6a53e6f8 --- /dev/null +++ b/gcc/testsuite/g++.dg/abi/offsetof.C @@ -0,0 +1,22 @@ +// Test that we can refer to the address of a base member of a null pointer +// to get its offset. The standard says that offsetof shall not be used on +// non-POD classes, but there seems to be no such restriction on the common +// implementation thereof. + +// Yes, this is bad, naughty, evil code. But it seems to be well-formed. +// So we'll just warn. + +// { dg-do run } + +struct A { int i; }; + +struct B: public A { + virtual void f (); +}; + +struct C: public B { }; + +int main () +{ + return ((__SIZE_TYPE__) &((C*)0)->i) != sizeof(void*); // { dg-warning "offsetof|invalid" "" } +} -- cgit v1.2.3