[Bug c++/65638] New: Crash on invalid input

[JamesMikeDuPont at googlemail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65638

            Bug ID: 65638
           Summary: Crash on invalid input
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: JamesMikeDuPont at googlemail dot com

using the invalid input file:
```
void crash (bool
```

found using permutation testing based on the 
https://h4ck3rm1k3.wordpress.com/2015/03/31/test-random-permutations-of-files-and-lines-for-gccgo-golang-go-compiler-bug-reporting/

Arch:
Linux gcc2-power8.osuosl.org 3.17.4-301.fc21.ppc64le #1 SMP Mon Dec 1 07:51:01
UTC 2014 ppc64le ppc64le ppc64le GNU/Linux

crashes on :
gcc (GCC) 4.9.2 20141101 (Red Hat 4.9.2-1)
and
gcc (GCC) 5.0.0 20150331 (experimental)
but not on :

Linux 3.10-1-amd64 #1 SMP Debian 3.10.3-1 (2013-07-27) x86_64 GNU/Linux
with g++-4.9 (Debian 4.9.2-10) 4.9.2


```
test.cc:1:14: error: expected ‘,’ or ‘...’ at end of input
 void crash ( bool
              ^
test.cc:1:14: error: expected ‘)’ at end of input
test.cc:1:14: error: expected initializer at end of input
```