https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86762
Bug ID: 86762
Summary: Using -fstack-protector-all causes SIGSEV with gcc-8
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: shane at isara dot com
Target Milestone: ---
Created attachment 44474
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44474&action=edit
Intermediate file
Using gcc-8 from brew on macOS 10.13.6 a simple main program causes SIGSEV with
-fstack-protector-all. We have confirmed this is not the case using gcc-7 and
is only an issue on macOS (didn't check other versions of the OS).
The program is just as follows:
int main (int argv, char **arc)
{
(void) argv;
(void) argc;
return 0;
}
compiled with:
gcc-8 main.c -O3 -o tst -Wall -Wextra -fstack-protector-all --save-temps
causes:
fish: './tst' terminated by signal SIGSEGV (Address boundary error)
gcc-8 -v:
Using built-in specs.
COLLECT_GCC=gcc-8
COLLECT_LTO_WRAPPER=/usr/local/Cellar/gcc/8.2.0/libexec/gcc/x86_64-apple-darwin17.7.0/8.2.0/lto-wrapper
Target: x86_64-apple-darwin17.7.0
Configured with: ../configure --build=x86_64-apple-darwin17.7.0
--prefix=/usr/local/Cellar/gcc/8.2.0
--libdir=/usr/local/Cellar/gcc/8.2.0/lib/gcc/8
--enable-languages=c,c++,objc,obj-c++,fortran --program-suffix=-8
--with-gmp=/usr/local/opt/gmp --with-mpfr=/usr/local/opt/mpfr
--with-mpc=/usr/local/opt/libmpc --with-isl=/usr/local/opt/isl
--with-system-zlib --enable-checking=release --with-pkgversion='Homebrew GCC
8.2.0' --with-bugurl=https://github.com/Homebrew/homebrew-core/issues
--disable-nls
Thread model: posix
gcc version 8.2.0 (Homebrew GCC 8.2.0)
