[Bug target/41930] New: [4.5 regression] cc1 SEGV compiling maxval_r16.c

[ro at gcc dot gnu dot org]

Between 20091005 and 20091102, bootstrapping Tru64 UNIX V5.1B started to fail
in
libgfortan:

$ /vol/gcc/obj/gcc-4.5.0-20091102/5.1b-gcc/./gcc/xgcc
-B/vol/gcc/obj/gcc-4.5.0-20091102/5.1b-gcc/./gcc/
-B/vol/gcc/alpha-dec-osf5.1b/bin/ -B/vol/gcc/alpha-dec-osf5.1b/lib/ -isystem
/vol/gcc/alpha-dec-osf5.1b/include -isystem
/vol/gcc/alpha-dec-osf5.1b/sys-include -DHAVE_CONFIG_H -I.
-I/vol/gcc/src/gcc-dist/libgfortran -iquote/vol/gcc/src/gcc-dist/libgfortran/io
-I/vol/gcc/src/gcc-dist/libgfortran/../gcc
-I/vol/gcc/src/gcc-dist/libgfortran/../gcc/config -I../.././gcc -D_GNU_SOURCE
-std=gnu99 -Wall -Wstrict-prototypes -Wmissing-prototypes
-Wold-style-definition -Wextra -Wwrite-strings -fcx-fortran-rules -g -O2 -mieee
-MT maxval_r16.lo -MD -MP -MF .deps/maxval_r16.Tpo -c
/vol/gcc/src/gcc-dist/libgfortran/generated/maxval_r16.c  -DPIC -o
.libs/maxval_r16.o
/vol/gcc/src/gcc-dist/libgfortran/generated/maxval_r16.c: In function
'mmaxval_r16':
/vol/gcc/src/gcc-dist/libgfortran/generated/maxval_r16.c:413:1: internal
compiler error: Segmentation fault

Unfortunately, I cannot investigate the crash with gdb 6.6 since gdb crashes
itself when run on cc1.  I'll try with 7.0 instead.

Interestingly, it works ok on alpha-dec-osf4.0f: it seems to be due to the fact
that V5.1B supports 128-bit long double, while V4.0F does not.


-- 
           Summary: [4.5 regression] cc1 SEGV compiling maxval_r16.c
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ro at gcc dot gnu dot org
 GCC build triplet: alpha-dec-osf5.1b
  GCC host triplet: alpha-dec-osf5.1b
GCC target triplet: alpha-dec-osf5.1b


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41930