branch-1.4 distcheck failure due to -Wstack-protector

[Ralf Wildenhues]

Hi Eric,

distcheck fails for me with current branch-1.4 on GNU/Linux/x86_64,
gcc-4.2.4:

gcc -std=gnu99    -I../../lib -I../lib  -Wall -W -Wformat-y2k -Wformat-security 
-Winit-self -Wmissing-include-dirs -Wswitch-default -Wunused -Wunknown-pragmas 
-Wstrict-aliasing -Wstrict-overflow -Wfloat-equal -Wdeclaration-after-statement 
-Wshadow -Wunsafe-loop-optimizations -Wpointer-arith -Wbad-function-cast 
-Wc++-compat -Wcast-align -Wwrite-strings -Wstrict-prototypes 
-Wold-style-definition -Wmissing-prototypes -Wmissing-declarations 
-Wmissing-noreturn -Wmissing-format-attribute -Wpacked -Wnested-externs 
-Winline -Winvalid-pch -Wvolatile-register-var -Wdisabled-optimization 
-Wstack-protector -Woverlength-strings -Wattributes -Wmultichar -Wunused-macros 
-fdiagnostics-show-option -funit-at-a-time -Werror -g -O2 -MT input.o -MD -MP 
-MF .deps/input.Tpo -c -o input.o ../../src/input.c
cc1: warnings being treated as errors
../../src/input.c: In function 'set_word_regexp':
../../src/input.c:764: warning: not protecting function: no buffer at least 8 
bytes long
make[2]: *** [input.o] Error 1

Cheers,
Ralf