On Tue, May 26, 2015 at 12:41:19PM -0400, m.roth at 5-cent.us wrote: > Fred Smith wrote: > > I apologize up front, I'm sure this isn't the right place to ask, but > > I'm not sure where I should ask, instead. Hoping for some helpful hints > > in that regard... > > > > I'm using (trying to use...) the -fsanitize=thread feature. Though I'm > > finding the diagnostics rather cryptic, that isn't my issue here. > > Suddenly, a few days ago, I started getting this error while running the > > app i'm testing: > <snip> > > [New Thread 0x7fcd2f9ea700 (LWP 8152)] > > [New Thread 0x7fcd2f1e9700 (LWP 8153)] > > ThreadSanitizer: longjmp() is not supported > <snip> > > [Thread 0x7fcd47858700 (LWP 8141) exited] > > > > The message about longjmp() is the issue. This app doesn't use longjmp > > or siglongjump or any other of its cousins. It's possible that some > > 3rd-party lib (Oracle??) might, but I don't know why it has been working > for several > > weeks and suddenly starts giving me this error... > > > > Clues welcome, thanks! > > Many years ago, a couple young consultants came to me where we were > working (I was the "senior technical resource"), and told me the program > kept crashing in a library. We ran it under the debugger, and we saw the > library call. We reran it, with me at the keyboard, and I did something > they had no idea about: I stepped *into* the call, (the old Sun debugger, > stepi, rather than step, or stepn). I continued to step, working my way > down, finding the calls it crashed in. Finally, I found the function that > was crashing, stepped into it - turned out to be a BEA Tuxedo call - and > then I, who had the authority, could call them, and even though it was > stripped... I could tell them the function it failed in, and more-or-less > what it seemed to be doing. 'Bout a day later, I got a message back from > the developers what the issue was. > > You might try finding your problem that way; then you might have a clue as > to how to resolve it. > > Oh, and if it's Oracle, don't forget to set TWO_TASK, I think it was > called (haven't used Pro*C more than a dozen years....) I'm not using Pro*C either. I recall reading about TWO_TASK some years ago but never did figure out how to use it in a non-PRO*C environment, or even if it would be of value. Figured out, with a LOT of pain, how to use OCI to do what I needed. -- ---- Fred Smith -- fredex at fcshome.stoneham.ma.us ----------------------------- "For the word of God is living and active. Sharper than any double-edged sword, it penetrates even to dividing soul and spirit, joints and marrow; it judges the thoughts and attitudes of the heart." ---------------------------- Hebrews 4:12 (niv) ------------------------------