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BUG: debugger fails to start [message #46762]

Sat, 30 July 2016 08:57

slashupp
Messages: 231
Registered: July 2009

Experienced Member

linux
upp svn: 10082

my app compiles & runs but the debugger just flashes the outlines/borders of its debugging windows and then dies

any idea where I can look for the problem?
could not find any log-file - is there some settings I need to change?

(tried with gdb as external debugger but gdb dies with seg-fault when trying to read symbols form my app)

[Updated on: Sat, 30 July 2016 09:04]

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Re: BUG: debugger fails to start [message #46765 is a reply to message #46762]

Sun, 31 July 2016 13:36

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

I have just checked with latest nightly and it seems to work OK. But I only have some old linux mint here, I will recheck soon with latest kubuntu...

Mirek

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Re: BUG: debugger fails to start [message #46771 is a reply to message #46765]

Sun, 31 July 2016 19:32

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

It looks like it is not our fault:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68159

not sure what to do with that...

[Updated on: Sun, 31 July 2016 19:32]

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Re: BUG: debugger fails to start [message #46777 is a reply to message #46771]

Tue, 02 August 2016 10:17

slashupp
Messages: 231
Registered: July 2009

Experienced Member

thx mirek

just had a look at that site (now 2 aug 16) and still not resolve there Sad

in the mean time am debugging the old way: printf's all the way (sigh)

PS: looks like the gdb-bug also make valgrind hang

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Re: BUG: debugger fails to start [message #46778 is a reply to message #46762]

Tue, 02 August 2016 10:30

slashupp
Messages: 231
Registered: July 2009

Experienced Member

had a hunch and just now tested that it may involve c++14 related code
result: if I revert to c++11 all works OK
so it seems that the gdb-maintainers messed up with c++14
(damn - there goes decltype(auto) for one)

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Re: BUG: debugger fails to start [message #46780 is a reply to message #46777]

Tue, 02 August 2016 18:34

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

slashupp wrote on Tue, 02 August 2016 10:17

thx mirek

just had a look at that site (now 2 aug 16) and still not resolve there

in the mean time am debugging the old way: printf's all the way (sigh)

PS: looks like the gdb-bug also make valgrind hang

Try LOGs... Smile

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Re: BUG: debugger fails to start [message #46929 is a reply to message #46780]

Wed, 21 September 2016 07:55

coolman
Messages: 114
Registered: April 2006
Location: Czech Republic

Experienced Member

Hi,

I solved gdb demangling issue on Ubuntu 14.04 by downloading latest 7.11.1 gdb source code and rebuilding the gdb.

BR, Radek

#!/bin/bash

sudo apt-get install texinfo

# build gdb source code
cur_dir=`pwd`

mkdir -p /var/tmp/gdb-build
cd /var/tmp/gdb-build
wget -nc http://ftp.gnu.org/gnu/gdb/gdb-7.11.1.tar.gz
tar xf gdb-7.11.1.tar.gz
cd gdb-7.11.1
./configure
make
sudo make install

cd $cur_dir

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