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Date: Mon, 27 Mar 2000 10:20:59 +0800 (CST)
From: Christopher Hall <hsw@acm.org>
Reply-To: Christopher Hall <hsw@acm.org>
To: FreeBSD-gnats-submit@freebsd.org
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Subject: ports/17612: x11-fonts/intlfonts crashes X (Big5 encoding)
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>Number:         17612
>Category:       ports
>Synopsis:       x11-fonts/intlfonts crashes X (Big5 encoding)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-ports
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Mar 26 18:30:02 PST 2000
>Closed-Date:
>Last-Modified:
>Originator:     Christopher Hall
>Release:        FreeBSD 3.4-STABLE i386
>Organization:
>Environment:

	intlfonts-1.2
	XFree86-3.3.6

	ja-xemacs-canna-21.1.9
	ja-xemacs-sumo-canna-21.1

	exmh-2.1.1
	tcl-8.2.3
	tk-8.2.3

>Description:

	When trying to display a Big5 encoded file (XEmacs)
	or receiving an email with charset=big5 (exmh):
	the Xserver (XF86_SVGA) crashes; the X display disappears
	and the screen returns to ttyv0.  Logging in and running top
	shows that the Xserver is consuming 85..95% of CPU.  A kill -9
	is necessary to to stop it, which returns to xdm login screen.

	I also discovered that forcing XEmacs to use a 16 pixel font
	stops the crash.
	(i.e. adding Emacs.Font: -*-*-medium-r-*--16-*-*-*-*-*-*-*
	to .Xdefaults)

	The reason for the crash seems to be scaling the Taipei16 font.

	I encountered this file (taipei16.bdf) when it used to be in
	chinese/big5fonts; I believe its header to be corrupt, it
	has some strange items unlike any of the cns 16 pixel fonts in
	the same directory.

	taipei24.bdf might need similar changes.

>How-To-Repeat:

	The fastest way I found to to cause the crash was to select
	the 'Show many languages (C-h h)' from XEmacs 'mule' menu.

>Fix:

	Here is a patch to modify the header of taipei16.bdf
	I based the header on one of the cns 16 pixel fonts.
	(the resulting scaled font is extremely ugly, but at
	least this patch stops the crash)

begin 644 patch-aa
M+2TM($-H:6YE<V4O=&%I<&5I,38N8F1F+F]R:6<)5V5D(%-E<"`R-"`Q,SHP
M.3HS."`Q.3DW"BLK*R!#:&EN97-E+W1A:7!E:3$V+F)D9@E&<FD@36%R(#(T
M(#(R.C$X.C`Q(#(P,#`*0$`@+3<L,3D@*S<L,C8@0$`*($9/3E0@+45496XM
M1FEX960M365D:75M+5(M3F]R;6%L+2TQ-BTQ-3`M-S4M-S4M0RTQ-C`M0FEG
M-2Y%5&5N+3`*(%-)6D4@,34@-S4@-S4*($9/3E1"3U5.1$E.1T)/6"`Q-B`Q
M-2`P("TR"BU35$%25%!23U!%4E1)15,@,3(**U-405)44%)/4$525$E%4R`Q
M.0HK1D].5$Y!345?4D5'25-44ED@(B(**T9/54Y$4ED@(D5496XB"BM&04U)
M3%E?3D%-12`B1FEX960B"BM714E'2%1?3D%-12`B365D:75M(@HK4TQ!3E0@
M(E(B"BM3151724142%].04U%(").;W)M86PB"BM!1$1?4U193$5?3D%-12`B
M(@HK4$E814Q?4TE:12`Q-@HK4$])3E1?4TE:12`Q-3`**U)%4T],551)3TY?
M6"`W-0HK4D533TQ55$E/3E]9(#<U"BM34$%#24Y'(")#(@HK059%4D%'15]7
M24142"`Q-C`**T-(05)3151?4D5'25-44ED@(D))1S4N151E;B(**T-(05)3
M151?14Y#3T1)3D<@(C`B"B!&3TY47T%30T5.5"`Q,PH@1D].5%]$15-#14Y4
M(#(*($1%1D%53%1?0TA!4B`T,3(X,`H@0T]065))1TA4(")0=6)L:6,@1&]M
M86EN(@HM4$])3E1?4TE:12`Q-3`*+49/3E0@(BU%5&5N+49I>&5D+4UE9&EU
M;2U2+4YO<FUA;"TM,38M,34P+3<U+3<U+4,M,38P+4)I9S4N151E;BTP(@HM
M5T5)1TA4(#$P"BU215-/3%5424].(#$P,PHM4D533TQ55$E/3E]8(#<U"BU2
M15-/3%5424].7UD@-S4*+5A?2$5)1TA4(#0R.30Y-C<R.34*+5%5041?5TE$
M5$@@,38*($5.1%!23U!%4E1)15,*($-(05)3(#$S-3`S"B!35$%25$-(05(@
",`H@
`
end

>Release-Note:
>Audit-Trail:
>Unformatted:


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