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| author | Nick Alcock <nick.alcock@oracle.com> | 2016-12-26 10:08:45 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2016-12-26 10:08:45 +0100 |
| commit | 10c85e76c09716e744b4a41006718400b1eb2e84 (patch) | |
| tree | db306524b5147cd0ec6a67dd95aeb079d99112cc /config.make.in | |
| parent | de6591238b478bc86b8cf5af01a484114e399213 (diff) | |
| download | glibc-10c85e76c09716e744b4a41006718400b1eb2e84.zip glibc-10c85e76c09716e744b4a41006718400b1eb2e84.tar.gz glibc-10c85e76c09716e744b4a41006718400b1eb2e84.tar.bz2 | |
Disable stack protector in early static initialization [BZ #7065]
The startup code in csu/, and the brk and sbrk functions are
needed very early in initialization of a statically-linked program,
before the stack guard is initialized; TLS initialization also uses
memcpy, which cannot overrun its own stack. Mark all of these as
-fno-stack-protector.
We also finally introduce @libc_cv_ssp@ and @no_stack_protector@, both
substituted by the configury changes made earlier, to detect the case
when -fno-stack-protector is supported by the compiler, and
unconditionally pass it in when this is the case, whether or not
--enable-stack-protector is passed to configure. (This means that
it'll even work when the compiler's been hacked to pass
-fstack-protector by default, unless the hackage is so broken that
it does so in a way that is impossible to override.)
Diffstat (limited to 'config.make.in')
| -rw-r--r-- | config.make.in | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/config.make.in b/config.make.in index 35e7e59..4422025 100644 --- a/config.make.in +++ b/config.make.in @@ -58,7 +58,9 @@ with-fp = @with_fp@ enable-timezone-tools = @enable_timezone_tools@ unwind-find-fde = @libc_cv_gcc_unwind_find_fde@ have-fpie = @libc_cv_fpie@ +have-ssp = @libc_cv_ssp@ stack-protector = @stack_protector@ +no-stack-protector = @no_stack_protector@ have-selinux = @have_selinux@ have-libaudit = @have_libaudit@ have-libcap = @have_libcap@ |