[Bug tree-optimization/59109] New: [4.9 regression] ICE in mark_reachable_handlers, at tree-eh.c:3826

[sch...@linux-m68k.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59109

            Bug ID: 59109
           Summary: [4.9 regression] ICE in mark_reachable_handlers, at
                    tree-eh.c:3826
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Keywords: build
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sch...@linux-m68k.org
                CC: law at gcc dot gnu.org
            Target: ia64-*-*

Broken by r204708.

$ ../../xgcc -B../../ -c -O2 -g -W -Wall  -gnatpg -gnata -I- -I../rts -I.
-I../../../../gcc/ada ../../../../gcc/ada/make.adb -o make.o
../../../../gcc/ada/make.adb: In function
‘Make.Compile_Sources.Start_Compile_If_Possible’:
../../../../gcc/ada/make.adb:2613:32: warning: ‘Pid’ may be used uninitialized
in this function [-Wmaybe-uninitialized]
../../../../gcc/ada/make.adb:2519:10: note: ‘Pid’ was declared here
+===========================GNAT BUG DETECTED==============================+
| 4.9.0 20131113 (experimental) (ia64-suse-linux) GCC error:               |
| in mark_reachable_handlers, at tree-eh.c:3826                            |
| Error detected around ../../../../gcc/ada/make.adb:3312:7                |

#1  0x4000000001257b10 in mark_reachable_handlers (
    r_reachablep=<optimized out>, lp_reachablep=<optimized out>)
    at ../../gcc/tree-eh.c:3826
3826                      gcc_assert (gsi_one_before_end_p (gsi));