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From: "ro at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/102836] New: gcc.target/i386/pieces-memset-1.c etc. FAIL
Date: Tue, 19 Oct 2021 11:56:10 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102836

            Bug ID: 102836
           Summary: gcc.target/i386/pieces-memset-1.c etc. FAIL
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ro at gcc dot gnu.org
                CC: hjl.tools at gmail dot com
  Target Milestone: ---
            Target: i?86-pc-solaris2.11, x86_64-pc-solaris2.11

Some gcc.target/i386/pieces-memset-*.c tests have been FAILing on 32-bit
Solaris/x86
since they were installed:

FAIL: gcc.target/i386/pieces-memset-1.c scan-assembler-not %[re]bp
FAIL: gcc.target/i386/pieces-memset-4.c scan-assembler-not %[re]bp
FAIL: gcc.target/i386/pieces-memset-41.c scan-assembler-not %[re]bp
FAIL: gcc.target/i386/pieces-memset-7.c scan-assembler-not %[re]bp
FAIL: gcc.target/i386/pieces-memset-8.c scan-assembler-not %[re]bp

It turns out that this happens because 32-bit Solaris/x86 only guarantees
4-byte stack alignment following the i386 psABI, so defaults to -mstackreal=
ign.

Adding -mno-stackrealign to one test lets the output match what I get on
Linux/x86.  I suspect that's the best option?=