[Bug c/83843] New: [8 Regression] wrong code at -O2

[mednafen at sent dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83843

            Bug ID: 83843
           Summary: [8 Regression] wrong code at -O2
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mednafen at sent dot com
  Target Milestone: ---

Created attachment 43125
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43125&action=edit
test case

Linux x86_64

$ /usr/local/gcc8-256680/bin/gcc -Wall -O0 -o crcred crcred.c && ./crcred
fe fd

$ /usr/local/gcc8-256680/bin/gcc -Wall -O2 -o crcred crcred.c && ./crcred
01 02
Aborted