06-15-2019
Probably, placement has to do with word boundaries. Which vary with different OS and hardware. As Don mentioned clearly. gcc has options for packing objects in memory. try gcc -Q -v inputfilename.c - assuming that is what you used. Be prepared for a lot of information on your screen.
Last edited by jim mcnamara; 06-15-2019 at 07:46 PM..
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LEARN ABOUT DEBIAN
hardened-ld
HARDENED-LD(1) Debian GNU/Linux HARDENED-LD(1)
NAME
hardened-ld - linker wrapper to enforce hardening toolchain improvements
SYNOPSIS
export DEB_BUILD_HARDENING=1
ld ...
DESCRIPTION
The hardened-ld wrapper is normally used by calling ld as usual with DEB_BUILD_HARDENING set to 1. It will configure the necessary
toolchain hardening features. By default, all features are enabled. If a given feature does not work correctly and needs to be disabled,
the corresponding environment variables mentioned below can be set to 0.
ENVIRONMENT
DEB_BUILD_HARDENING=1
Enable hardening features.
DEB_BUILD_HARDENING_DEBUG=1
Print the full resulting gcc command line to STDERR before calling gcc.
DEB_BUILD_HARDENING_RELRO=0
Don't mark ELF sections read-only after start. See README.Debian for details.
DEB_BUILD_HARDENING_BINDNOW=0
Don't mark ELF loader for start-up dynamic resolution. See README.Debian for details.
NOTES
System-wide settings can be added to /etc/hardening-wrapper.conf, one per line.
The real ld is renamed ld.real, and a diversion is registered with dpkg-divert(1). Thus hardened-ld's idea of the default ld is dictated
by whatever package installed /usr/bin/ld.
SEE ALSO
hardened-cc(1) ld(1)
Debian Project 2008-01-08 HARDENED-LD(1)