[Bug go/81617] New: mksigtab.sh fails to resolve NSIG with glibc 2.26

[schwab@linux-m68k.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81617

            Bug ID: 81617
           Summary: mksigtab.sh fails to resolve NSIG with glibc 2.26
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: go
          Assignee: ian at airs dot com
          Reporter: schwab@linux-m68k.org
                CC: cmang at google dot com
  Target Milestone: ---

In glibc 2.26 the value of _NSIG is now defined as an expression of __SIGRTMAX
instead of a simple number.

$ grep 'NSIG =' gen-sysinfo.go 
const _NSIG = __NSIG
const __NSIG = (___SIGRTMAX + 1)