- publishing free software manuals
Perl Language Reference Manual
by Larry Wall and others
Paperback (6"x9"), 724 pages
ISBN 9781906966027
RRP £29.95 ($39.95)

Sales of this book support The Perl Foundation! Get a printed copy>>>

23.5 BUGS

You cannot get stack frame information or in any fashion debug functions that were not compiled by Perl, such as those from C or C++ extensions.

If you alter your @_ arguments in a subroutine (such as with shift or pop), the stack backtrace will not show the original values.

The debugger does not currently work in conjunction with the -W command-line switch, because it itself is not free of warnings.

If you're in a slow syscall (like waiting, accepting, or reading from your keyboard or a socket) and haven't set up your own $SIG{INT} handler, then you won't be able to CTRL-C your way back to the debugger, because the debugger's own $SIG{INT} handler doesn't understand that it needs to raise an exception to longjmp(3) out of slow syscalls.

ISBN 9781906966027Perl Language Reference ManualSee the print edition