[Bug gdb/29989] PowerPC, gdb fails to stop at printf call

https://sourceware.org/bugzilla/show_bug.cgi?id=29989

--- Comment #8 from Sourceware Commits <cvs-commit at gcc dot gnu.org> ---
The gdb-18-branch branch has been updated by Tom de Vries
<[email protected]>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ff4fd46f4d974ee525f7a3b514833ba38b02dd3f

commit ff4fd46f4d974ee525f7a3b514833ba38b02dd3f
Author: Tom de Vries <[email protected]>
Date:   Mon Aug 17 08:14:53 2026 +0200

    [gdb/testsuite] Add xfail for failure to break on ppc printf

    With test-case gdb.server/sysroot.exp, we run into:
    ...
    (gdb) break printf^M
    Breakpoint 2 at 0x7ffff7c2045c^M
    (gdb) continue^M
    Continuing.^M
    [Inferior 1 (process 469972) exited normally]^M
    (gdb) FAIL: $exp: sysroot=local: continue to printf (the program exited)
    ...

    The problem is that while breakpoint is indeed set on printf:
    ...
    (gdb) b printf
    Breakpoint 2 at 0x7ffff7c2045c
    (gdb) disassemble 0x7ffff7c2045c
    Dump of assembler code for function printf@@GLIBC_2.17:
    ...
    the function that is called instead is __printfieee128.

    Glibc commit f05ab7c4a9 ("ldbl-128ibm-compat: Add local aliases for printf
    family symbols") should fix this, but that's available starting version
2.43.

    Add an xfail for older glibc (without backport of that patch).

    Tested on ppc64le-linux and x86_64-linux.

    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29989
    (cherry picked from commit 3cdb0313346fa63a028de9e7c2129182cd36ad2e)

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