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Subject: Re: gdb input error gfortrani_fbuf_read () cyggfortran-3.dll
References: <0ff238ef03c04fe38f48139793e77e57 AT vsrv060ex03 DOT ssd DOT fsi DOT com>
Cc: "Rockefeller, Harry" <Harry DOT Rockefeller AT flightsafety DOT com>
To: cygwin AT cygwin DOT com
From: Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>
Message-ID: <af5cbdfb-21ab-8450-f089-0d1af5c26ea1@dronecode.org.uk>
Date: Mon, 26 Sep 2016 14:41:00 +0100
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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.


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