[Bug symtab/23331] New: failure in gdb.gdb with gcc 8.1

["tromey at sourceware dot org" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=23331

            Bug ID: 23331
           Summary: failure in gdb.gdb with gcc 8.1
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: symtab
          Assignee: unassigned at sourceware dot org
          Reporter: tromey at sourceware dot org
  Target Milestone: ---

I'm using gcc 8.1 (the system gcc) on x86-64 Fedora 28.

When running the gdb.gdb tests I see a failure like this:

(gdb) call catch_command_errors(execute_command, "python print(5)", 0)
Cannot resolve function catch_command_errors to any overloaded instance


I think this happens because gdb isn't finding the DWARF for
execute_command:

(top-gdb) print execute_command
$2 = {<text variable, no debug info>} 0x7ecec0 <execute_command(char const*,
int)>


However, the function is definitely in the DWARF:

[4d5a860]       subprogram
        external        true
        name    "execute_command"
        decl_file       "../../binutils-gdb/gdb/top.c"
        decl_line       540
        decl_column     1
        linkage_name    "_Z15execute_commandPKci"
        ranges  0x429cfc..0x429d32, 0x7ecec0..0x7ed3d3
        frame_base      0..0xffffffffffffffff:0 call_frame_cfa
        GNU_all_call_sites      true
        sibling [4d5b890] structure_type

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