[Bug 1538] New: improve SSP detection

[bugzilla-daemon at bugzilla.mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=1538

           Summary: improve SSP detection
           Product: Portable OpenSSH
           Version: 5.1p1
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Build system
        AssignedTo: unassigned-bugs at mindrot.org
        ReportedBy: vapier at gentoo.org


the SSP test compiles this simple code:
#include <stdlib.h>
int main(void){exit(0);}

while that works fine for testing the -fstack-protector-all flag, it's
insufficient for testing the -fstack-protector flag.  since it doesnt
use any stack, no SSP markings will be added.  so if the toolchain does
not fully support SSP, the configure script will add the flag but the
build will ultimately fail.

a better test case seems to be:
#include <stdio.h>
int main(void){char foo[1024];return sprintf(foo, "moo cow");}

patch:
http://sources.gentoo.org/net-misc/openssh/files/openssh-5.1_p1-better-ssp-check.patch?rev=1.1

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