Adding new gcc warnings

Russ Allbery rra at
Mon Apr 22 21:59:43 UTC 2013

Russ Allbery <rra at> writes:
> Julien ÉLIE <julien at> writes:

>> -Winit-self

> I always left this off because if I were to ever do that, it would be
> intentional; it's a hard mistake to make by accident.  But I don't recall
> ever using it, so I have no objections.

And, as it turns out, I started using it for my other projects somewhere
along the line.  :)

Based on this discussion, I read through the other options, and am now

# A set of flags for warnings.  Add -O because gcc won't find some warnings
# without optimization turned on.  Desirable warnings that can't be turned
# on due to other problems:
#     -Wconversion (htons warnings)
# Last checked against gcc 4.7.2 (2013-04-22).  -D_FORTIFY_SOURCE=2 enables
# warn_unused_result attribute markings on glibc functions on Linux, which
# catches a few more issues.
WARNINGS = -g -O -D_FORTIFY_SOURCE=2 -Wall -Wextra -Wendif-labels	   \
	-Wformat=2 -Winit-self -Wswitch-enum -Wuninitialized -Wfloat-equal \
	-Wdeclaration-after-statement -Wshadow -Wpointer-arith		   \
	-Wbad-function-cast -Wcast-align -Wwrite-strings		   \
	-Wjump-misses-init -Wlogical-op -Wstrict-prototypes		   \
	-Wold-style-definition -Wmissing-prototypes -Wnormalized=nfc	   \
	-Wpacked -Wredundant-decls -Wnested-externs -Winline -Wvla -Werror

with other packages.  (The order of flags is intended to match the order
in which they're presented in the GCC manual, which appears to be

Russ Allbery (rra at             <>

    Please send questions to the list rather than mailing me directly.
     <> explains why.

More information about the inn-workers mailing list