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Subject: Re: gdb input error gfortrani_fbuf_read () cyggfortran-3.dll
To: cygwin AT cygwin DOT com
References: <0ff238ef03c04fe38f48139793e77e57 AT vsrv060ex03 DOT ssd DOT fsi DOT com> <af5cbdfb-21ab-8450-f089-0d1af5c26ea1 AT dronecode DOT org DOT uk>
Cc: "Rockefeller, Harry" <Harry DOT Rockefeller AT flightsafety DOT com>
From: Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>
Message-ID: <8bb12fde-de72-2524-ee5c-1cf8f9b99ece@dronecode.org.uk>
Date: Tue, 27 Sep 2016 16:14:26 +0100
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On 26/09/2016 14:41, Jon Turney wrote:
> On 22/09/2016 20:55, Rockefeller, Harry wrote:
>> gdb (test version) and program's 'read' seem to have an input clash.
>> Anyway, gdb used to pause and allow keyboard input.
>
> Thanks for reporting this problem, and the test case.
>
>> Thread 1 "foo" hit Breakpoint 1, foo () at foo.f:4
>> 4             write(*,*) "Enter a real number"
>> (gdb) n
>>  Enter a real number
>> 5             read(*,*) e
>> (gdb) n
>>
>> [1]+  Stopped                 gdb foo
>>
>> $ fg
>> gdb foo
>>
>> Thread 1 "foo" received signal SIGTTIN, Stopped (tty input).
>> 0x5bd015dc in gfortrani_fbuf_read () from /usr/bin/cyggfortran-3.dll
>
> In gdb 7.11 there are some upstream changes in the way access to the
> controlling terminal is given the inferior, and I guess this has broken
> something here.

I uploaded a gdb 7.11.1-2 test package with a fix for this.



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