http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60174
--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Eric Botcazou from comment #11)
> Reproducible on x86{-64}/Linux with the following procedure:
>
> - copy $srcdir/gcc/testsuite/ada/acats/support/repbody.ada to $buildir
> - gnatchop repbody.ada
> - copy $srcdir/gcc/testsuite/ada/acats/support/repspec.ada to $buildir
> - gnatchop repspec.ada
> - copy $builddir/gcc/ada/rts/system.ads to $buildir
> - edit system.ads and change ZCX_By_Default to False
> - compile
Unfortunately that's always telling me
error: "gnat1drv.adb" must be recompiled ("system.ads" has been modified)
error: "s-stalib.adb" must be recompiled ("system.ads" has been modified)
error: "a-except.adb" must be recompiled ("system.ads" has been modified)
...
(recurring problem when I try to re-build gnat1 or all-gcc in my
dev-tree after svn up)
I wonder if this is a missing dependency.
> eric@polaris:~/build/gcc/native> gcc/xgcc -Bgcc -S cc3305a.adb -O2
>
> Unable to coalesce ssa_names 34 and 399 which are marked as MUST COALESCE.
> i_34(ab) and i_399(ab)
> +===========================GNAT BUG DETECTED==============================+
> | 4.9.0 20140213 (experimental) [trunk revision 207749] (x86_64-suse-linux)
> GCC error:|
> | SSA corruption |
> | Error detected around cc3305a.adb:35:1 |
> | Please submit a bug report; see http://gcc.gnu.org/bugs.html. |
> | Use a subject line meaningful to you and us to track the bug. |
> | Include the entire contents of this bug box in the report. |
> | Include the exact gcc or gnatmake command that you entered. |
> | Also include sources listed below in gnatchop format |
> | (concatenated together with no headers between files). |
> +==========================================================================+
