[Bug testsuite/30110] New: [gdb/testsuite] Test i386 test-cases on x86_64

[Bug testsuite/30110] New: [gdb/testsuite] Test i386 test-cases on x86_64

[vries at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30110

            Bug ID: 30110
           Summary: [gdb/testsuite] Test i386 test-cases on x86_64
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: testsuite
          Assignee: unassigned at sourceware dot org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

What is the status of x86_64/-m32 and i386 testing?

The sourceware builder lists one i386 bot, which is great.  But of course that
only tests a few test-cases.

On biarch distros we can test target board unix/-m32, which I occasionally do
(because the opensuse gdb package testsuite uses that as a flavour in its test
matrix for x86_64: {-m64,-m32}x{-pie,-no-pie}).

I'm not sure if any other gdb maintainer (regularly, completely) tests
x86_64/-m32 or native i386.

An idea to improve test coverage is to include the i386-specific test-cases in
an x86_64 run, using -m32, if supported.

The drawback is that these test-case would be executed twice without increasing
test coverage in a setting where we'd do both -m32 and -m64 testing.

But the benefit would be that these test-cases do get exercised regularly in
any default x86_64 build & test scenario.

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