[Bug gdb/20977] New: GDB exception handling is broken on i686-w64-mingw32

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

https://sourceware.org/bugzilla/show_bug.cgi?id=20977

            Bug ID: 20977
           Summary: GDB exception handling is broken on i686-w64-mingw32
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
          Assignee: unassigned at sourceware dot org
          Reporter: qiyao at gcc dot gnu.org
  Target Milestone: ---

GDB 7.12 branch is crashed if I start it and type command "kill".

GNU gdb (GDB) 7.12.0.20161209-git
Copyright (C) 2016 Free Software Foundation, Inc.
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(gdb) [New Thread 2936.0xb80]
kill

Thread 1 received signal SIGSEGV, Segmentation fault.
0x03ff662b in ?? ()
top?bt 15
#0  0x03ff662b in ?? ()
#1  0x00526b92 in stdin_event_handler (error=0, client_data=0x172ed8)
    at ../../binutils-gdb/gdb/event-top.c:555
#2  0x00525a94 in handle_file_event (ready_mask=<optimized out>,
    file_ptr=0x3ff5cb8) at ../../binutils-gdb/gdb/event-loop.c:733
#3  gdb_wait_for_event (block=block@entry=1)
    at ../../binutils-gdb/gdb/event-loop.c:884
#4  0x00525bfb in gdb_do_one_event ()
    at ../../binutils-gdb/gdb/event-loop.c:347
#5  0x00525ce5 in start_event_loop ()
    at ../../binutils-gdb/gdb/event-loop.c:371
#6  0x0051fada in captured_command_loop (data=0x0)
    at ../../binutils-gdb/gdb/main.c:324
#7  0x0051cf5d in catch_errors (
    func=func@entry=0x51fab0 <captured_command_loop(void*)>,
    func_args=func_args@entry=0x0,
    errstring=errstring@entry=0x7922bf
<VEC_interp_factory_p_quick_push(VEC_inte
rp_factory_p*, interp_factory*, char const*, unsigned
int)::__PRETTY_FUNCTION__+
351> "", mask=mask@entry=RETURN_MASK_ALL)
    at ../../binutils-gdb/gdb/exceptions.c:236
#8  0x00520f0c in captured_main (data=0x328feb4)
    at ../../binutils-gdb/gdb/main.c:1149
#9  gdb_main (args=args@entry=0x328feb4) at ../../binutils-gdb/gdb/main.c:1159
#10 0x0071e400 in main (argc=1, argv=0x171220)
    at ../../binutils-gdb/gdb/gdb.c:32
top?

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