[Bug c/85997] Bogus -Wvla warning from function array argument with size expression

[joseph at codesourcery dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85997

--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Well, that's a VLA before the decay to pointer type, and thus violates the 
C90 constraint referenced in the diagnostic.  So a diagnostic is obviously 
required with -std=c90 -pedantic or -Wc90-c99-compat, even if there are 
certain other uses of -Wvla for which you only want warnings about e.g. 
code that actually allocates memory for a VLA.