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From:	Reto Huber <rh03260503 AT gmail DOT com>
Date:	Fri, 9 Sep 2016 06:15:45 +0200
Message-ID:	<CABo5xTrsEjGug4rZYmCsksK4NfHSqppuegtT6Gqtot+E+CpwRg@mail.gmail.com>
Subject:	gdb : Exception in SetThreadName(unsigned long, char const*) () from /usr/bin/cygwin1.dll
To:	cygwin AT cygwin DOT com
X-IsSubscribed:	yes

Hi

I am using cygwin for quite a while. Yesterday I did update.
Everything seemed to work smooth. Today I figured out that gdb does no
longer work debugging my project. Even a simple "Hello World" can not
be debugged anymore. The executable itself runs ok. Here the example


rh AT pc /d/gdbTest
$ cat main.cpp
#include <stdio.h>

int main(void)
{
  printf("Hello World\n");
  return 0;
}


rh AT pc /d/gdbTest
$ g++ -std=gnu++11 -g -O0 -pipe -Wall -Wno-unused-local-typedefs
-Wpointer-arith -Woverloaded-virtual -MMD -MP main.cpp -o main.exe


rh AT pc /d/gdbTest
$ ./main.exe
Hello World


rh AT pc /d/gdbTest
$ gdb main.exe
GNU gdb (GDB) (Cygwin 7.10.1-1) 7.10.1
Copyright (C) 2015 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-pc-cygwin".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from main.exe...done.
(gdb) r
Starting program: /d/gdbTest/main.exe
[New Thread 11608.0x2e20]
[New Thread 11608.0x1b3c]
gdb: unknown target exception 0x406d1388 at 0x7639c54f

Program received signal ?, Unknown signal.
0x7639c54f in RaiseException () from /c/Windows/syswow64/KERNELBASE.dll
(gdb) bt
#0  0x7639c54f in RaiseException () from /c/Windows/syswow64/KERNELBASE.dll
#1  0x61081614 in SetThreadName(unsigned long, char const*) () from
/usr/bin/cygwin1.dll
#2  0x61004a6b in cygthread::create() () from /usr/bin/cygwin1.dll
#3  0x61004b5f in cygthread::async_create(unsigned long) () from
/usr/bin/cygwin1.dll
#4  0x77e154f6 in ntdll!RtlRemoveVectoredExceptionHandler () from
/c/Windows/SysWOW64/ntdll.dll
#5  0x77dc005d in ntdll!KiUserApcDispatcher () from
/c/Windows/SysWOW64/ntdll.dll
#6  0x61004b50 in cygthread::create() () from /usr/bin/cygwin1.dll
#7  0x75dbb2b7 in ?? ()
#8  0x77ea021c in ntdll!NlsAnsiCodePage () from /c/Windows/SysWOW64/ntdll.dll
#9  0x007eb720 in ?? ()
#10 0x77dda1c9 in ntdll!LdrInitializeThunk () from /c/Windows/SysWOW64/ntdll.dll
#11 0x00000000 in ?? ()
(gdb)

Versions: (Downloaded 7. Sept 2016)
GNU gdb (GDB) (Cygwin 7.10.1-1) 7.10.1
g++ (GCC) 5.4.0
cygwin1.dll: File Version 2.6.0, APIVersion 0.304

The versions before the update were: (Downloaded 27. July 2016)
GNU gdb (GDB) (Cygwin 7.10.1-1) 7.10.1
g++ (GCC) 5.4.0
cygwin1.dll: File Version 2.5.2, APIVersion 0.297

If I run the same procedure as mentioned above using the version from
July 27th it works.

Can you give me a hint how I can fix it? Can anyone reproduce the issue?

Thanks in advance for help
Reto

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