Re: Error compiling bison 3.4.2 on Solaris

[Paul Eggert]

On 10/17/19 11:34 PM, Akim Demaille wrote:
> Bison no longer compiles cleanly (i.e., many warnings) on macOS with GCC 7, 8, 
> 9.  Clang is ok though.  And there are similar failures on the CI with older 
> versions of GCC.
>
> https://travis-ci.org/akimd/bison/builds/599470491

First, I suggest telling Travis not to use --enable-gcc-warnings. That 
option is intended mainly for developers, and it's not suitable for 
simply building and testing Bison because it generates too many false 
alarms (as is the case here).

Second, the diagnostics in the above URL are all false alarms. If they 
are affecting you, does the attached patch silence them? This patch is 
the sort of thing we do for other GNU projects (e.g., coreutils, Emacs), 
because back when we were configuring these warning options the latest 
GCC (the one used by developers) generated too many false alarms. 
-Wno-type-limits doesn't seem to be needed with recent GCC so I suppose 
they fixed some GCC bugs in this area.

0001-port-to-picky-older-GCC.patch
Description: Text Data