Bug#994969: jackd2: segfaults after today's upgrade of other Debian testing packages

[Ryan Thoryk]

When I had jack dump out it's module filenames during library load, it 
only appeared to load jack_firewire once.  The clue as to what's 
happening is that valgrind reports "Bad permissions for mapped region", 
if you look at the function, it's trying to pass a string literal, the 
valgrind error means that it's trying to modify the string, and since 
it's read-only, it results in a segfault.  The string and address are valid.

The appropriate fix appears to be to either use your alternative 
function, or to create a C string and pass it to the function:

---
char binding[] = "glibmm__Glib::Binding::manage");
GQuark quark_manage = g_quark_from_static_string(binding);
---
or
---
GQuark quark_manage = g_quark_from_string("glibmm__Glib::Binding::manage");
---

Both of those changes work on my system, and jack_firewire now works for 
me again.  One thing online says about that function, "This function 
must not be used before library constructors have finished running."

-- 
Ryan Thoryk
ryan at thoryk.com
ryan at tliquest.net