Spurious failure in debug-info/limited-debuginfo.rs with newer gdb (7.7).

[Florob]

Apparently new versions of gdb (I'm seeing this with 7.7) changed the output of of info functions.
E.g. instead of static void limited-debuginfo::main(); it now outputs static void limited-debuginfo::main(void);.

Output is as follows:

---- [debug-info] debug-info/limited-debuginfo.rs stdout ----

    error: line not found in debugger output: static void limited-debuginfo::main();
    command: gdb -quiet -batch -nx -command=x86_64-unknown-linux-gnu/test/debug-info/limited-debuginfo.debugger.script x86_64-unknown-linux-gnu/test/debug-info/limited-debuginfo.stage2-x86_64-unknown-linux-gnu
    stdout:
    ------------------------------------------
    All defined functions:

    File src/test/debug-info/limited-debuginfo.rs:
    static void limited-debuginfo::main(void);
    static void limited-debuginfo::some_function(void);
    static void limited-debuginfo::some_other_function(void);
    static void limited-debuginfo::zzz(void);

    Non-debugging symbols:
    0x0000000000400880  _init
    0x00000000004008b0  uvio::new_loop::h616534f7e6ab76adGIa::v0.10.pre@plt
    0x00000000004008c0  __libc_start_main@plt
    0x00000000004008d0  __gmon_start__@plt
    0x00000000004008e0  rust_stack_exhausted@plt
    0x00000000004008f0  lang_start::hf9e7230acaab0452Bwc::v0.10.pre@plt
    0x0000000000400900  _start
    0x0000000000400930  deregister_tm_clones
    0x0000000000400960  register_tm_clones
    0x00000000004009a0  __do_global_dtors_aux
    0x00000000004009c0  frame_dummy
    0x0000000000400b70  __libc_csu_init
    0x0000000000400be0  __libc_csu_fini
    0x0000000000400be4  __morestack
    0x0000000000400bf4  _fini
    Breakpoint 1 at 0x400b00: file src/test/debug-info/limited-debuginfo.rs, line 44.
    static void limited-debuginfo::zzz(void);
    [Thread debugging using libthread_db enabled]
    Using host libthread_db library "/usr/lib/libthread_db.so.1".
    [New Thread 0x7ffff7f56700 (LWP 5320)]
    [New Thread 0x7ffff625c700 (LWP 5323)]
    [New Thread 0x7ffff615b700 (LWP 5324)]
    [New Thread 0x7ffff605a700 (LWP 5325)]
    [New Thread 0x7ffff5f59700 (LWP 5326)]
    [New Thread 0x7ffff5e58700 (LWP 5327)]
    [New Thread 0x7ffff5d57700 (LWP 5328)]
    [New Thread 0x7ffff5c56700 (LWP 5329)]
    [Switching to Thread 0x7ffff7f56700 (LWP 5320)]

    Breakpoint 1, limited-debuginfo::zzz () at src/test/debug-info/limited-debuginfo.rs:44
    44  fn zzz() {()}
    0x0000000000400af1 in limited-debuginfo::some_function () at src/test/debug-info/limited-debuginfo.rs:49
    49      zzz();
    No locals.
    [Thread 0x7ffff7f56700 (LWP 5320) exited]
    [Thread 0x7ffff605a700 (LWP 5325) exited]
    [Thread 0x7ffff615b700 (LWP 5324) exited]
    [Thread 0x7ffff5c56700 (LWP 5329) exited]
    [Thread 0x7ffff5d57700 (LWP 5328) exited]
    [Thread 0x7ffff5e58700 (LWP 5327) exited]
    [Thread 0x7ffff625c700 (LWP 5323) exited]
    [Thread 0x7ffff5f59700 (LWP 5326) exited]
    [Inferior 1 (process 5280) exited normally]

    ------------------------------------------
    stderr:
    ------------------------------------------
    warning: Could not load shared library symbols for linux-vdso.so.1.
    Do you need "set solib-search-path" or "set sysroot"?

    ------------------------------------------

    task '[debug-info] debug-info/limited-debuginfo.rs' failed at 'explicit failure', /home/florian/devel/rust/src/compiletest/runtest.rs:950

[jdm]

We could change the output to static void limited-debuginfo::main([...]) I suppose.

[michaelwoerister]

We could change the output to static void limited-debuginfo::main([...]) I suppose.

Yes, I'd also fix it like this for now (I'll do so the day after tomorrow, at the latest). In the future, pretty printers should make this deterministic anyway.