On 3/25/21 11:53 AM, Jaroslav Skarvada wrote:
on fedora rawhide the stack-overflow test is failing for grep-3.6:
Thanks for reporting the problem. I'm not seeing it on Fedora 34 x86-64
with the current Savannah master grep:
23-penguin $ i=3;printf %0${i}0000d 0|tr 0 '(' > in
24-penguin $ ./grep -E -f in
grep: stack overflow
which is the expected behavior.
We're planning to release a new grep, and it uses current Gnulib which
has some bug fixes in the stack-overflow area, so perhaps the bug is
fixed now. You can see if it works for you by building from a very
recent snapshot as per this email:
https://lists.gnu.org/r/grep-devel/2021-08/msg00003.html
I configured using the flags you specified:
./configure CFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g
-grecord-gcc-switches -pipe -Wall -Werror=format-security
-Wp,-_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS
-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong
-specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic
-fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection'
LDFLAGS='-Wl,-z,relro -Wl,--as-needed -Wl,-z,now
-specs=/usr/lib/rpm/redhoat/redhat-hardened-ld '
Since I was building from .git and warnings are enabled, I needed to
build with:
make WERROR_CFLAGS=
to prevent diagnostics from stopping the build. I did not have time to
investigate whether the warnings are bogus, as they usually are.
