Thread: Warnings compiling preproc.y

Compiling HEAD I see the following 2 warnings:

...
make[4]: Leaving directory `/home/viy/prj/pgb/src/interfaces/ecpg/compatlib'
make -C preproc all
make[4]: Entering directory `/home/viy/prj/pgb/src/interfaces/ecpg/preproc'
make -C ../../../../src/port all
make[5]: Entering directory `/home/viy/prj/pgb/src/port'
make[5]: Nothing to be done for `all'.
make[5]: Leaving directory `/home/viy/prj/pgb/src/port'
bison -y -d  preproc.y
mv -f y.tab.c ./preproc.c
mv -f y.tab.h ./preproc.h
/usr/bin/flex  -o'pgc.c' pgc.l
gcc -O2 -ggdb -DBITMAP_DEBUG -Wall -Wmissing-prototypes -Wpointer-arith
-Wendif-labels -fno-strict-aliasing -g -Wno-error  -I./../include -I.
-I../../../../src/include -D_GNU_SOURCE  -DMAJOR_VERSION=4 -DMINOR_VERSION=1
-DPATCHLEVEL=1  -c -o preproc.o preproc.c -MMD
In file included from preproc.y:6416:
pgc.c: In function `yylex':
pgc.c:1503: warning: label `find_rule' defined but not used
preproc.y: At top level:
pgc.c:3559: warning: `yy_flex_realloc' defined but not used

Should those variables be removed?


-- 

Victor Y. Yegorov

Victor Yegorov wrote:
> Compiling HEAD I see the following 2 warnings:

> bison -y -d  preproc.y
> mv -f y.tab.c ./preproc.c
> mv -f y.tab.h ./preproc.h
> /usr/bin/flex  -o'pgc.c' pgc.l
> gcc -O2 -ggdb -DBITMAP_DEBUG -Wall -Wmissing-prototypes -Wpointer-arith
> -Wendif-labels -fno-strict-aliasing -g -Wno-error  -I./../include -I.
> -I../../../../src/include -D_GNU_SOURCE  -DMAJOR_VERSION=4 -DMINOR_VERSION=1
> -DPATCHLEVEL=1  -c -o preproc.o preproc.c -MMD
> In file included from preproc.y:6416:
> pgc.c: In function `yylex':
> pgc.c:1503: warning: label `find_rule' defined but not used
> preproc.y: At top level:
> pgc.c:3559: warning: `yy_flex_realloc' defined but not used
> 
> Should those variables be removed?

These warnings aren't new; the fault lies in the C code generated by 
flex, so the problem is not simple to fix.

-Neil