Today I upgrade my computer to ubuntu 11.04. then I started to compile vim.
when compiling, it shows many warnings for strcpy() in eval.c.
gcc -c -I. -Iproto -DHAVE_CONFIG_H -DFEAT_GUI_GTK -pthread
-I/usr/include/atk-1.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/
-I/usr/include/glib-2.0 -I/usr/lib/i386-linux-gnu/glib-2.0/include
-I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/gtk-2.0
-I/usr/lib/gtk-2.0/include -I/usr/include/cairo
-I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pixman-1 -O2 -g
-march=native -mfpmath=sse -DNDEBUG -fno-strength-reduce -o
objects/eval.o eval.c
In file included from /usr/include/string.h:642:0,
from os_unix.h:515,
from vim.h:270,
from eval.c:14:
In function ‘strcpy’,
inlined from ‘call_user_func’ at eval.c:21945:2:
/usr/include/bits/string3.h:105:3: warning: call to __builtin___strcpy_chk
will always overflow destination buffer
These are warnings but it always crashes vim on start-up.
Add -D_FORTIFY_SOURCE=1 to CFLAGS solves the problem. But vim does work
without FORTIFY_SOURCE in ubuntu 10.10 and before. IMO -D_FORTIFY_SOURCE=1
is not an option which should be used on final product program.
Any hints? thanks.
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