[Bug rust/25025] FAIL: gdb.rust/generics.exp: print identity::<u32>(23u32)

["cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=25025

--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=906bb4c58faa8e2c1c62e295f8054e75e910e5e8

commit 906bb4c58faa8e2c1c62e295f8054e75e910e5e8
Author: Tom Tromey <tom@tromey.com>
Date:   Fri Apr 24 15:35:01 2020 -0600

    Fix Rust test cases

    PR rust/25025 notes that some Rust test cases fail.

    Debugging gdb revealed that the Rust compiler emits different linkage
    names that demangle to the same result.  Enabling complaints when
    reading the test case is enough to show it:

        During symbol reading: Computed physname <generics::identity<f64>> does
not match demangled <generics::identity> (from linkage
<_ZN8generics8identity17h8540b320af6656d6E>) - DIE at 0x424 [in module
/home/tromey/gdb/build/gdb/testsuite/outputs/gdb.rust/generics/generics]
        During symbol reading: Computed physname <generics::identity<u32>> does
not match demangled <generics::identity> (from linkage
<_ZN8generics8identity17hae302fad0c33bd7dE>) - DIE at 0x459 [in module
/home/tromey/gdb/build/gdb/testsuite/outputs/gdb.rust/generics/generics]
        ...

    This patch changes the DWARF reader to prefer the computed physname,
    rather than the output of the demangler, for Rust.  This fixes the
    bug.

    gdb/ChangeLog
    2020-04-24  Tom Tromey  <tom@tromey.com>

            PR rust/25025:
            * dwarf2/read.c (dwarf2_physname): Do not demangle for Rust.

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