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Subject: [Bug target/48142] [4.6/4.7 Regression] miscompilation with -Os -mpreferred-stack-boundary=5 -fstack-check
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48142

--- Comment #8 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-04-22 19:49:10 UTC ---
> This test fails again after the fix for PR target/48723 [1,2].

Sure, stack checking is totally broken:

Running /home/eric/svn/gcc/gcc/testsuite/gnat.dg/dg.exp ...
FAIL: gnat.dg/stack_check1.adb (test for excess errors)
WARNING: gnat.dg/stack_check1.adb compilation failed to produce executable
FAIL: gnat.dg/stack_check2.adb (test for excess errors)
WARNING: gnat.dg/stack_check2.adb compilation failed to produce executable

FAIL:   c52103x
FAIL:   c52104x
FAIL:   c52104y
FAIL:   cb1010a
FAIL:   cb1010c
FAIL:   cb1010d

FAIL: g++.dg/other/i386-9.C (internal compiler error)
FAIL: g++.dg/other/i386-9.C (test for excess errors)

I don't understand how the patch can have been installed.  I'd suggest
reverting it ASAP (and assigning PR target/48723 to me).