[Bug ipa/61916] Internal compiler error in symtab_nonoverwritable_alias with -O2

[steve at sk2 dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61916

Stephen Kitt <steve at sk2 dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |steve at sk2 dot org

--- Comment #6 from Stephen Kitt <steve at sk2 dot org> ---
Hi,

I believe I have a minimal reproducer for this, courtesy of Jakub Wilk
(reported at https://bugs.debian.org/779526 against gcc-mingw-w64). This is
with gcc 4.9.2 targeting i686-w64-mingw32, so not quite the same target but the
error is at the same line:

% i686-w64-mingw32-gcc badsymtab.c 
badsymtab.c:9:1: internal compiler error: in symtab_nonoverwritable_alias, at
symtab.c:1252
 }
 ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
Preprocessed source stored into /tmp/user/1000/ccMPGb9z.out file, please attach
this to your bugreport.

I'm attaching the pre-processed source.

The compiler is configured as follows:

% i686-w64-mingw32-gcc -v
Using built-in specs.
COLLECT_GCC=/usr/bin/i686-w64-mingw32-gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-w64-mingw32/4.9-win32/lto-wrapper
Target: i686-w64-mingw32
Configured with: ../../src/configure --build=x86_64-linux-gnu --prefix=/usr
--includedir='/usr/include' --mandir='/usr/share/man'
--infodir='/usr/share/info' --sysconfdir=/etc --localstatedir=/var
--libexecdir='/usr/lib/gcc-mingw-w64' --disable-maintainer-mode
--disable-dependency-tracking --prefix=/usr --enable-shared --enable-static
--disable-multilib --with-system-zlib --libexecdir=/usr/lib
--without-included-gettext --libdir=/usr/lib --enable-libstdcxx-time=yes
--with-tune=generic --enable-version-specific-runtime-libs
--enable-fully-dynamic-string --enable-libgomp
--enable-languages=c,c++,fortran,objc,obj-c++ --enable-lto --with-plugin-ld
--enable-threads=win32 --program-suffix=-win32
--program-prefix=i686-w64-mingw32- --target=i686-w64-mingw32
--with-as=/usr/bin/i686-w64-mingw32-as --with-ld=/usr/bin/i686-w64-mingw32-ld
Thread model: win32
gcc version 4.9.2 (GCC)