linuxaudio.org

On 05/31/2012 01:58 AM, David Adler wrote:

quoted text
> On Thu, May 31, 2012 at 1:00 AM, mark hadman wrote:

>

>> I have the same verbose behaviour problem with jack2 on Arch Linux 64 bit.

>

> Thanks Mark, good to know I'm not the only one.

> I have it on both, 64 and 32 bit.

>

> best,

> d

It might have to do with Arch's compiler[-flags] and how jack2 uses

unions .. or scoping: JackGlobals vs Engine-Parameters.. although I

don't have an explanation.. all seems good.
A hunch: it could be caused by using 'server_ptr->verbose.b' (a union)

as boolean. The sever only checks "if (server_ptr->verbose.b)". The

union itself comprises other uninitialized values that could make it

evaluate to true (though it shouldn't, but maybe some compiler

optimization casts it to (int) instead of (bool) )
I know this is the '-users' list (I'm ccing jack-devel), but could

someone who experiences the problem try to track it down?
Basically just add a few printf()'s. Start at: common/JackControlAPI.cpp

- line 926 - before the call to  "new JackServer(..)" add
  printf("DEBUG verbose: %s\n",(server_ptr->verbose.b)?"on":"off");
recompile, launch jackd. If it prints "verbose: on", sth is wrong with

parameter initialization in main() or with using unions. If it's "off"

the problem sits deeper:
add a line just after common/JackServer.cpp line 66

  printf("DEBUG verbose2: %s\n",(JackGlobals::fVerbose)?"on":"off");

...
A crude test for the union() hunch would be to change

common/JackControlAPI.h line 53:

 replace

  "union jackctl_parameter_value"

with

  "struct jackctl_parameter_value"
and compile with '-fpermissive' like this:
  CXXFLAGS="-fpermissive" ./waf  configure

  ./waf
..not sure if that'll work though..
HTH,

robin

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