[Bug c/84696] New: internal compiler error: in compute_antic_aux, at tree-ssa-pre.c:2148

[bugzilla.gnu at coelho dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84696

            Bug ID: 84696
           Summary: internal compiler error: in compute_antic_aux, at
                    tree-ssa-pre.c:2148
           Product: gcc
           Version: 8.0.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: bugzilla.gnu at coelho dot net
  Target Milestone: ---

Created attachment 43556
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43556&action=edit
preprocessed source

Compilation of postgresql fails with -fwrapv -O2

 sh> gcc --version
 gcc (GCC) 8.0.1 20180303 (experimental)

 sh> gcc -fwrapv -O2 -c -o localtime.o localtime.i
 during GIMPLE pass: pre
 localtime.c: In function ‘tzparse’:
 localtime.c:897:1: internal compiler error: in compute_antic_aux, at
tree-ssa-pre.c:2148
 tzparse(const char *name, struct state *sp, bool lastditch)
 ^~~~~~~
 0xe0b5de compute_antic_aux
        ../../gcc-trunk-src/gcc/tree-ssa-pre.c:2148
 0xe0b5de compute_antic
        ../../gcc-trunk-src/gcc/tree-ssa-pre.c:2364
 0xe0b5de execute
        ../../gcc-trunk-src/gcc/tree-ssa-pre.c:4131
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