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authorNick Alcock <nick.alcock@oracle.com>2016-12-26 10:08:54 +0100
committerFlorian Weimer <fweimer@redhat.com>2016-12-26 10:10:58 +0100
commit66a704c43cfec810fea67a6959f2d1c94f4d594f (patch)
tree174dece4f1f3b73874398c029f8aa96911632e9d /socket/sendmsg.c
parentbc174f20b83d19167ecac14ce0762eddbe47cc64 (diff)
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Work even with compilers which enable -fstack-protector by default [BZ #7065]
With all the machinery we just added, we can easily arrange to work even
when the compiler passes in -fstack-protector automatically: all the
necessary bits of glibc are always compiled with -fno-stack-protector
now.

So tear out the check in configure, and add appropriate calls to
-fno-stack-protector in tests that need them (largely those that use
-nostdlib), since we don't yet have a __stack_chk_fail that those
tests can rely upon.  (GCC often provides one, but we cannot rely on
this, especially not when bootstrapping.)

When stack protection is disabled, explicitly pass -fno-stack-protector
to everything, to stop a compiler hacked to enable it from inserting
calls to __stack_chk_fail via the PLT in every object file.
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