[patch] Fix path length overflow in realpath (BZ#22786)

[Joseph Myers]

On Mon, 9 Apr 2018, Paul Pluzhnikov wrote:

> +# suppress warnings about allocation size.
> +CFLAGS-test-bz22786.c += $(+gcc-nowarn)

I see no current uses of $(+gcc-nowarn) in the source tree.  Rather than 
resurrecting this variable, we should remove it.  Warnings should be 
disabled as locally as possible in the sources - meaning using DIAG_* with 
appropriate detailed comments around the specific statements generating 
warnings, if possible, and failing that, with specific -Wno-* options in 
the makefile rather than the extremely blunt -w which would also hide all 
valid warnings, not just the one warning you intend to avoid on the one 
bit of code for which you intend to avoid it.

-- 
Joseph S. Myers
joseph@codesourcery.com