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Initialize context before RtlContextCapture

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* exceptions.cc (call_signal_handler): Zero initialize context and set
	context flags, as RlCaptureContext doesn't.

Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
This commit is contained in:
Jon TURNEY 2015-04-04 16:19:31 +01:00
parent a44e09fd49
commit a5efc75cc1
2 changed files with 11 additions and 2 deletions
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5
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,8 @@
2015-04-04 Jon TURNEY <jon.turney@dronecode.org.uk>
* exceptions.cc (call_signal_handler): Zero initialize context and set
context flags, as RlCaptureContext doesn't.
2015-04-10 Corinna Vinschen <corinna@vinschen.de> 2015-04-10 Corinna Vinschen <corinna@vinschen.de>
* fhandler.cc (fhandler_base::open_with_arch): Call open with mode * fhandler.cc (fhandler_base::open_with_arch): Call open with mode

8
winsup/cygwin/exceptions.cc
View File

@ -1496,8 +1496,12 @@ _cygtls::call_signal_handler ()
if (thissi.si_cyg) if (thissi.si_cyg)
memcpy (&thiscontext.uc_mcontext, ((cygwin_exception *)thissi.si_cyg)->context(), sizeof(CONTEXT)); memcpy (&thiscontext.uc_mcontext, ((cygwin_exception *)thissi.si_cyg)->context(), sizeof(CONTEXT));
else else
RtlCaptureContext ((CONTEXT *)&thiscontext.uc_mcontext); {
/* FIXME: Really this should be the context which the signal interrupted? */ /* FIXME: Really this should be the context which the signal interrupted? */
memset(&thiscontext.uc_mcontext, 0, sizeof(struct __mcontext));
thiscontext.uc_mcontext.ctxflags = CONTEXT_FULL;
RtlCaptureContext ((CONTEXT *)&thiscontext.uc_mcontext);
}
/* FIXME: If/when sigaltstack is implemented, this will need to do /* FIXME: If/when sigaltstack is implemented, this will need to do
something more complicated */ something more complicated */