Re: Why is _dl_relocate_static_pie linked into crt1.o?

[Florian Weimer <fweimer at redhat dot com>]

On 07/05/2018 04:12 PM, Andreas Schwab wrote:
> On Jul 05 2018, Florian Weimer <fweimer@redhat.com> wrote:
>
> > Note that this is about the stub function in csu/,
>
> Isn't that built with stack projector automatically?  It certainly is
> for me.

Not for me:

gcc static-reloc.c -c -std=gnu11 -fgnu89-inline  -O2 -Wall -Werror 
-Wp,-D_GLIBCXX_ASSERTIONS -Wundef -Wwrite-strings 
-fasynchronous-unwind-tables -fcf-protection -fmerge-all-constants 
-frounding-math -fstack-clash-protection -fstack-protector-strong -g 
-m64 -mtune=generic -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 
-Wstrict-prototypes -Wold-style-definition -fno-math-errno   -fpie 
-fno-stack-protector -DSTACK_PROTECTOR_LEVEL=0 
-ftls-model=initial-exec […]

That's due to this in csu/Makefile:

CFLAGS-.o += $(no-stack-protector)
CFLAGS-.op += $(no-stack-protector)
CFLAGS-.os += $(no-stack-protector)

The version in elf/ *is* compiled with stack protector, but that looks 
like a mistake to me.

Thanks,
Florian