[Bug other/79719] New: gcc --vers still outputs command line should be checked

[jg at jguk dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79719

            Bug ID: 79719
           Summary: gcc --vers still outputs command line should be
                    checked
           Product: gcc
           Version: 5.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jg at jguk dot org
  Target Milestone: ---

I noticed that a few command line arguments still work, even if incomplete.

Surely these should be rejected?

Sorry my compiler is not the latest, could someone verify with latest please.



$ gcc --vers
gcc (Ubuntu 5.4.0-6ubuntu1~16.04.4) 5.4.0 20160609
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


$ gcc --ver
gcc: error: unrecognized command line option ‘--ver’
gcc: fatal error: no input files
compilation terminated.


$ gcc --he
Usage: gcc [options] file...
Options:
  -pass-exit-codes         Exit with highest error code from a phase
  --help                   Display this information
  --target-help            Display target specific command line options
 
--help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]


Others work as expected:
$ gcc -dumpspec
gcc: fatal error: no input files
compilation terminated.