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Subject: Re: gdb 7.11.1-2 started within emacs fails
To: The Cygwin Mailing List <cygwin AT cygwin DOT com>
References: <d4a9e76c90c44c7cb0fa915a2589c0f6 AT vsrv060ex03 DOT ssd DOT fsi DOT com> <207e93bf-8f7e-57a3-1abc-cc645c79020c AT cornell DOT edu>
Cc: "Rockefeller, Harry" <Harry DOT Rockefeller AT flightsafety DOT com>
From: Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>
Message-ID: <9bed0b67-2930-ee6b-8361-4bf4d9d7d542@dronecode.org.uk>
Date: Wed, 11 Oct 2017 20:44:43 +0100
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On 27/09/2016 21:15, Ken Brown wrote:
> On 9/27/2016 2:47 PM, Rockefeller, Harry wrote:
>> Using program foo:
>>       program foo
>>       e = 1.0
>>       stop
>>       end
>>
>> $ /usr/bin/gfortran    -g foo.f -o foo
>>
>> Emacs version info: GNU Emacs 25.1.1 (i686-pc-cygwin, GTK+ Version 
>> 3.18.9) of 2016-09-17
>>
>> Inside emacs I ran M-x gud-gdb and got
>> ... GNU gdb (GDB) (Cygwin 7.11.1-2) 7.11.1 ...
>> (gdb) b 1
>> Breakpoint 1 at 0x4011d6: file foo.f, line 1.
>> (gdb) r
>> Starting program: /cygdrive/c/Users/harryr/foo.exe
>> [New Thread 6296.0x22ac]
>> [New Thread 6296.0x24d4]
>> readline: readline_callback_read_char() called with no handler!
>> Debugger aborted (core dumped)
>>
>> Foo written in C++ also fails with the same message.
>> Running gdb foo in bash gives the expected result:
>> gdb stops at first executable line prompting for next gdb command.
> 
> I can confirm that this happens also with gdb-7.11.1-1 but not 
> gdb-7.10.1-1.  (I tested on x86_64, since gdb-7.10.1-1 is broken on x86.)
> 
> It also fails with M-x gdb instead of M-x gud-gdb, but with a different 
> error message:
> 
>    Failed to resume program execution (ContinueDebugEvent failed, error 87)

These problem seem not longer occur due to upstream changes in gdb 7.12.

I've uploaded a gdb 7.12.1-1 test package.

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