Re: gdb/testsuite/gdb.code/*.exp

[Michael Elizabeth Chastain <chastain at cygnus dot com>]

I did something like that in the Linux kernel.

I wrote a small perl script invoked by "make checkconfig".  The script
looks for source files that test CONFIG_* variables without #including
"<linux/config.h>" first.  (Due to the vagaries of the C standard,
this usage silently does an unexpected thing).

Every so often, somebody runs "make checkconfig" and sends results to
Linus.

I think the basic idea, running some kind of script to issue more warnings,
is good.  The script has to be conservative, though: if it flags false
positives, it quickly either becomes worthless or people come to avoid
anything that upsets the script.

It's analagous to adding new warnings to "gcc", but because it's a separate
script, it gets to use more site-specific rules.

Michael