Malfunctioning of signal caused by library libpthread (?)

[see call 1201019986]

Hi everybody,
On a HPUX 11.00 system, C function signal, when used in a program wich is compiled and linked with library libpthread, does not work normally when receiving signal SIGALRM : it will not call the function func it points to (set with instruction : signal (SIGALRM, func); )
Otherwise,when the program using function signal is compiled and linked without libpthread, function signal works normally...
Has anybody any explanation ?
Any help greatly appreciated.
Regards.

[Pete Randall]

Just a hint:

Rather than re-posting, you could bounce your original post back to the top of the list simply by posting a reply yourself.

Good luck,
Pete

[Duncan Edmonstone]

Have you read the section on thread implications on the man page for signal.h ?

man 5 signal

There some more info in the pthread man page:

man pthread

HTH

Duncan

[see call 1201019986]

Thank you Pete. Actually, I didn't know what was more accurate between the general section and the languages one. That's why I preferred to post the same message a second time in the languages section, thinking it would get more hits. And it did. Thanks again.

[Pete Randall]

My fault, I didn't notice that they were in two different sections. Many of us monitor the parent HP-UX section and thus see both entries. I really must learn to read more carefully.

Hope you get your answer,
Pete