[Bug ipa/64813] [5 Regression] 23_containers/unordered_map/requirements/explicit_instantiation/[2,4].cc iCEs

["marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64813

--- Comment #21 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Wed Feb 11 13:33:47 2015
New Revision: 220616

URL: https://gcc.gnu.org/viewcvs?rev=220616&root=gcc&view=rev
Log:
Handle noreturn function thunk creation.

    PR ipa/64813
    * cgraphunit.c (cgraph_node::expand_thunk): Do not create
    a return value for call to a function that is noreturn.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cgraphunit.c
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/65017] valgrind error in  get_constraint_for_address_of
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ide017

--- Comment #4 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 11 Feb 2015, dcb314 at hotmail dot com wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?ide017
>
> --- Comment #3 from David Binderman <dcb314 at hotmail dot com> ---
> (In reply to Richard Biener from comment #2)
> > I can't reproduce this - how did you compile/configure GCC?  Just tried both
> > --enable-checking and --enable-checking=release builds.
>
> ../src/trunk/configure --prefix=/home/dcb/gcc/results \
>     --disable-bootstrap \
>     --disable-werror \
>     --enable-checking=yes \
>     --enable-languages=c,c++,fortran \
>     CC="clang -fheinous-gnu-extensions" \
>     CXX="clang++ -fheinous-gnu-extensions"
>
> on AMD Phenom.

Uh, so it might be very well clang miscompiling it.  I don't have
clang to reproduce, so can you get me some more information,
like

(gdb) p debug_tree (t)

at the point it barfs?  Can you disable optimization of clang?
Thus build with CFLAGS="-g -O0" CXXFLAGS="-g -O0"?