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On Jan 14 18:05, Jon Turney wrote: > Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk> > --- > winsup/doc/faq-programming.xml | 19 +++++++++++++------ > 1 file changed, 13 insertions(+), 6 deletions(-) > > diff --git a/winsup/doc/faq-programming.xml b/winsup/doc/faq-programming.xml > index af6102a..7f1ffd9 100644 > --- a/winsup/doc/faq-programming.xml > +++ b/winsup/doc/faq-programming.xml > @@ -859,15 +859,22 @@ on using <literal>strace</literal>, see the Cygwin User's Guide. > </answer></qandaentry> > > <qandaentry id="faq.programming.gdb-signals"> > -<question><para>Why doesn't gdb handle signals?</para></question> > +<question><para>How does gdb handle signals?</para></question> > <answer> > > -<para>Unfortunately, there is only minimal signal handling support in gdb > -currently. Signal handling only works with Windows-type signals. > -SIGINT may work, SIGFPE may work, SIGSEGV definitely does. You cannot > -'stop', 'print' or 'nopass' signals like SIGUSR1 or SIGHUP to the > -process being debugged. > +<para> > +gdb maps known Windows exceptions to signals such as SIGSEGV, SIGFPE, SIGTRAP, > +SIGINT and SIGILL. Other Windows exceptions are passed on to the handler (if > +any), and reported as an unknown signal if an unhandled (second chance) > +exception occurs. > </para> > + > +<para> > +There is also an experimental feature to notify gdb of purely Cygwin signals > +like SIGABRT, SIGHUP or SIGUSR1. This currently has some known problems, for > +example, single-stepping from these signals may not work as expected. > +</para> > + > </answer></qandaentry> > > <qandaentry id="faq.programming.linker"> > -- > 2.6.2 ACK Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat
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