[Bug other/78766] New: GCC Awk scripts use the non-POSIX /^{/ regex

[sstewartgallus00 at mylangara dot bc.ca]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78766

            Bug ID: 78766
           Summary: GCC Awk scripts use the non-POSIX  /^{/ regex
           Product: gcc
           Version: 6.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sstewartgallus00 at mylangara dot bc.ca
  Target Milestone: ---

When building with the latest Gawk 4.14 and POSIXLY_CORRECT set I get the error

gawk: /home/sstewartgallus/root/var/src/gcc-6.2.0/gcc/opt-functions.awk:64:
(FILENAME=- FNR=77) fatal: Invalid preceding regular expression: /^{/