[Bug ada/27536] New: -fsection-anchors breaks Ada

["schwab at suse dot de" <gcc-bugzilla at gcc dot gnu dot org>]

$ /tmp/cvs/gcc-test-r113398/Build/./gcc/xgcc
-B/tmp/cvs/gcc-test-r113398/Build/./gcc/
-B/tmp/cvs/gcc-test-r113398/Build/root/powerpc64-suse-linux/bin/
-B/tmp/cvs/gcc-test-r113398/Build/root/powerpc64-suse-linux/lib/ -isystem
/tmp/cvs/gcc-test-r113398/Build/root/powerpc64-suse-linux/include -isystem
/tmp/cvs/gcc-test-r113398/Build/root/powerpc64-suse-linux/sys-include -c -g -O2
-fPIC -specs=ldblspecs -mno-minimal-toc      -W -Wall -gnatpg  g-os_lib.adb -o
g-os_lib.o -v
Reading specs from /tmp/cvs/gcc-test-r113398/Build/./gcc/specs
Reading specs from /tmp/cvs/gcc-test-r113398/Build/./gcc/ldblspecs
Target: powerpc64-suse-linux
Configured with: ../configure --prefix=/tmp/cvs/gcc-test-r113398/Build/root
--host=powerpc64-suse-linux --enable-shared --enable-threads
--enable-__cxa_atexit --with-system-zlib --with-cpu=default32
--enable-languages=ada --disable-bootstrap
Thread model: posix
gcc version 4.2.0 20060430 (experimental)
 /tmp/cvs/gcc-test-r113398/Build/./gcc/gnat1 -quiet -dumpbase g-os_lib.adb -O2
-W -Wall -fPIC -g -mno-minimal-toc -gnatpg -gnatO g-os_lib.o g-os_lib.adb -o
/tmp/ccGycApt.s
+===========================GNAT BUG DETECTED==============================+
| 4.2.0 20060430 (experimental) (powerpc64-suse-linux-gnu) GCC error:      |
| in change_address_1, at emit-rtl.c:1784                                  |
| Error detected at g-os_lib.adb:2603:1                                    |

Regression hunting is pointing its finger at this change:

        * config/rs6000/rs6000.c (rs6000_override_options): Enable
        TARGET_NO_FP_IN_TOC for section anchors.
        (optimization_options): Enable section anchors for all
        non-"Objective" languages.

In fact, -fno-section-anchors lets it compile again.


-- 
           Summary: -fsection-anchors breaks Ada
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code, build
          Severity: normal
          Priority: P3
         Component: ada
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: schwab at suse dot de
GCC target triplet: powerpc-*-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27536