[Bug middle-end/70273] New: [6 regression] FAIL: g++.dg/ext/label13a.C -std=gnu++98 execution test / scan-assembler _ZN1CC4Ev

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70273

            Bug ID: 70273
           Summary: [6 regression] FAIL: g++.dg/ext/label13a.C
                    -std=gnu++98 execution test / scan-assembler _ZN1CC4Ev
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sch...@linux-m68k.org
                CC: rth at gcc dot gnu.org
            Blocks: 70199
  Target Milestone: ---
            Target: ia64-*-*

$ gcc/xg++ -Bgcc/ ../gcc/testsuite/g++.dg/ext/label13a.C -nostdinc++
-Iia64-suse-linux/libstdc++-v3/include/ia64-suse-linux
-Iia64-suse-linux/libstdc++-v3/include -I../libstdc++-v3/libsupc++
-I../libstdc++-v3/include/backward -I../libstdc++-v3/testsuite/util
-std=gnu++98 -save-temps -ffat-lto-objects
-Lia64-suse-linux/./libstdc++-v3/src/.libs
-Bia64-suse-linux/./libstdc++-v3/src/.libs
-Lia64-suse-linux/./libstdc++-v3/src/.libs -lm -o ./label13a.exe 
$ ./label13a.exe 
Segmentation fault
$ grep _ZN1CC label13a.s
        .global _ZN1CC2Ev#
        .type   _ZN1CC2Ev#, @function
        .proc _ZN1CC2Ev#
_ZN1CC2Ev:
        .endp _ZN1CC2Ev#
        .global _ZN1CC1Ev#
        .type   _ZN1CC1Ev#, @function
        .proc _ZN1CC1Ev#
_ZN1CC1Ev:
        .endp _ZN1CC1Ev#
        br.call.sptk.many b0 = _ZN1CC1Ev#

37af779ab88a2f957b4b0e64a3badc2272731d63 is the first bad commit
    git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@234261
138bc75d-0d04-0410-961f-82ee72b054a4


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70199
[Bug 70199] [5 Regression] Crash at -O2 when using labels.