[Bug bootstrap/50686] New: [4.7 regression] IRIX 6.5 bootstrap failure: ICE in in lookup_cfa_1, at dwarf2cfi.c:595

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50686

             Bug #: 50686
           Summary: [4.7 regression] IRIX 6.5 bootstrap failure: ICE in in
                    lookup_cfa_1, at dwarf2cfi.c:595
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ro@gcc.gnu.org
              Host: mips-sgi-irix6.5
            Target: mips-sgi-irix6.5
             Build: mips-sgi-irix6.5


Between 20110930 and 20111007, mips-sgi-irix6.5 bootstrap started to fail in
stage2:

$ /var/gcc/regression/trunk/6.5-gcc/build/./prev-gcc/g++
-B/var/gcc/regression/trunk/6.5-gcc/build/./prev-gcc/
-B/vol/gcc/mips-sgi-irix6.5/bin/ -nostdinc++
-B/var/gcc/regression/trunk/6.5-gcc/build/prev-mips-sgi-irix6.5/libstdc++-v3/src/.libs
-B/var/gcc/regression/trunk/6.5-gcc/build/prev-mips-sgi-irix6.5/libstdc++-v3/libsupc++/.libs
-I/var/gcc/regression/trunk/6.5-gcc/build/prev-mips-sgi-irix6.5/libstdc++-v3/include/mips-sgi-irix6.5
-I/var/gcc/regression/trunk/6.5-gcc/build/prev-mips-sgi-irix6.5/libstdc++-v3/include
-I/vol/gcc/src/hg/trunk/local/libstdc++-v3/libsupc++
-L/var/gcc/regression/trunk/6.5-gcc/build/prev-mips-sgi-irix6.5/libstdc++-v3/src/.libs
-L/var/gcc/regression/trunk/6.5-gcc/build/prev-mips-sgi-irix6.5/libstdc++-v3/libsupc++/.libs
-c  -DIN_GCC_FRONTEND -g -O2 -DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual
-Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror   -DHAVE_CONFIG_H -I. -Ijava
-I/vol/gcc/src/hg/trunk/local/gcc -I/vol/gcc/src/hg/trunk/local/gcc/java
-I/vol/gcc/src/hg/trunk/local/gcc/../include -I./../intl
-I/vol/gcc/src/hg/trunk/local/gcc/../libcpp/include -I/vol/gcc/include
-I/vol/gcc/include -I/vol/gcc/include 
-I/vol/gcc/src/hg/trunk/local/gcc/../libdecnumber
-I/vol/gcc/src/hg/trunk/local/gcc/../libdecnumber/dpd -I../libdecnumber
-I/vol/gcc/include  -I/vol/gcc/include -DCLOOG_INT_GMP -DCLOOG_ORG 
/vol/gcc/src/hg/trunk/local/gcc/java/expr.c -o java/expr.o
/vol/gcc/src/hg/trunk/local/gcc/java/expr.c: In function 'int
maybe_adjust_start_pc(JCF*, int, int, int)':
/vol/gcc/src/hg/trunk/local/gcc/java/expr.c:3686:1: internal compiler error: in
lookup_cfa_1, at dwarf2cfi.c:595

It seems I'll have to start a reghunt for the culprit patch since I haven't
found an obvious cause.

  Rainer