I don't know if this is a per-gcc/gdb version problem, but I get an error when the current signal handler is executed: No symbol "__GI___sigaction" in current context. However, the symbol __sigaction works fine. Does this symbol work for you also?

(In reply to Luke Wagner [:luke] from comment #0) > I don't know if this is a per-gcc/gdb version problem, but I get an error > when the current signal handler is executed: > No symbol "__GI___sigaction" in current context. > However, the symbol __sigaction works fine. Does this symbol work for you > also? I remember that the problem was you can't just use "sigaction" as it aliases the struct sigaction and gdb didn't know how to handle the difference. I had sometimes errors that the symbol wasn't found, but not every time (maybe only when compiling with clang++). Using __sigaction works fine for me.

Great, then let's try this. This patch also fixes some sort of merge error introduced by http://hg.mozilla.org/mozilla-central/rev/2d2709188afa#l16.1

Oops, I meant https://hg.mozilla.org/integration/mozilla-inbound/rev/64ed8a633254