GNU bug report logs - #24281
25.1; (next-frame nil t) crashes

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: martin rudalics <rudalics <at> gmx.at>
Subject: bug#24281: closed (Re: bug#24281: 25.1; (next-frame nil t) crashes)
Date: Mon, 22 Aug 2016 07:03:02 +0000

[Message part 1 (text/plain, inline)]

Your bug report

#24281: 25.1; (next-frame nil t) crashes

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 24281 <at> debbugs.gnu.org.

-- 
24281: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=24281
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: martin rudalics <rudalics <at> gmx.at>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 24281-done <at> debbugs.gnu.org
Subject: Re: bug#24281: 25.1; (next-frame nil t) crashes
Date: Mon, 22 Aug 2016 09:02:36 +0200

> Please push to master.

Done.

martin

[Message part 3 (message/rfc822, inline)]

From: martin rudalics <rudalics <at> gmx.at>
To: Bug-Gnu-Emacs <bug-gnu-emacs <at> gnu.org>
Subject: 25.1; (next-frame nil t) crashes
Date: Sun, 21 Aug 2016 19:15:59 +0200

With emacs -Q evaluating (next-frame nil t) currently crashes as:

(gdb) bt
#0  terminate_due_to_signal (sig=22, backtrace_limit=2147483647) at emacs.c:354
#1  0x011f1adf in die (msg=0x1642607 "0 <= n", file=0x1642600 "lisp.h", line=916) at alloc.c:7223
#2  0x01143da3 in XFASTINT (a=...) at lisp.h:916
#3  0x0101794f in candidate_frame (candidate=..., frame=..., minibuf=...) at frame.c:1311
#4  0x01017a53 in next_frame (frame=..., minibuf=...) at frame.c:1338
#5  0x01017f06 in Fnext_frame (frame=..., miniframe=...) at frame.c:1396
#6  0x0121e882 in eval_sub (form=...) at eval.c:2169
#7  0x0121d9f5 in Feval (form=..., lexical=...) at eval.c:1988
#8  0x0122085f in Ffuncall (nargs=3, args=0x82e0e8) at eval.c:2696
#9  0x0127d391 in exec_byte_code (bytestr=..., vector=..., maxdepth=..., args_template=..., nargs=1, args=0x82e690) at bytecode.c:880
#10 0x01221620 in funcall_lambda (fun=..., nargs=1, arg_vector=0x82e688) at eval.c:2855
#11 0x01220c2e in Ffuncall (nargs=2, args=0x82e680) at eval.c:2742
#12 0x0127d391 in exec_byte_code (bytestr=..., vector=..., maxdepth=..., args_template=..., nargs=1, args=0x82ed78) at bytecode.c:880
#13 0x01221620 in funcall_lambda (fun=..., nargs=1, arg_vector=0x82ed70) at eval.c:2855
#14 0x01220c2e in Ffuncall (nargs=2, args=0x82ed68) at eval.c:2742
#15 0x01212c52 in Ffuncall_interactively (nargs=2, args=0x82ed68) at callint.c:252
#16 0x012206cf in Ffuncall (nargs=3, args=0x82ed60) at eval.c:2673
#17 0x01215e4e in Fcall_interactively (function=..., record_flag=..., keys=...) at callint.c:840
#18 0x012208b6 in Ffuncall (nargs=4, args=0x82f1c8) at eval.c:2700
#19 0x0127d391 in exec_byte_code (bytestr=..., vector=..., maxdepth=..., args_template=..., nargs=1, args=0x82f780) at bytecode.c:880
#20 0x01221620 in funcall_lambda (fun=..., nargs=1, arg_vector=0x82f778) at eval.c:2855
#21 0x01220c2e in Ffuncall (nargs=2, args=0x82f770) at eval.c:2742
#22 0x0121ff7f in call1 (fn=..., arg1=...) at eval.c:2552
#23 0x011515c3 in command_loop_1 () at keyboard.c:1479
#24 0x0121b4f2 in internal_condition_case (bfun=0x1150af7 <command_loop_1>, handlers=..., hfun=0x114fd8f <cmd_error>) at eval.c:1309
#25 0x01150591 in command_loop_2 (ignore=...) at keyboard.c:1107
#26 0x0121a696 in internal_catch (tag=..., func=0x1150555 <command_loop_2>, arg=...) at eval.c:1074
#27 0x01150517 in command_loop () at keyboard.c:1086
#28 0x0114f7a7 in recursive_edit_1 () at keyboard.c:692
#29 0x0114fa68 in Frecursive_edit () at keyboard.c:763
#30 0x0114d17e in main (argc=2, argv=0xa32658) at emacs.c:1626

Lisp Backtrace:
"next-frame" (0x82ded0)
"eval" (0x82e0f0)
"elisp--eval-last-sexp" (0x82e688)
"eval-last-sexp" (0x82ed70)
"funcall-interactively" (0x82ed68)
"call-interactively" (0x82f1d0)
"command-execute" (0x82f778)
(gdb)


In GNU Emacs 25.1.1 (i686-pc-mingw32)
 of 2016-08-18 built on MACHNO
Repository revision: 8c2946e29b38fa3e0dff6b4d402ba0fda0e03c9b
Windowing system distributor 'Microsoft Corp.', version 5.1.2600
Configured using:
 'configure --prefix=/c/emacs-git/next --with-wide-int
 --enable-checking=yes --enable-check-lisp-object-type=yes 'CFLAGS=-O0
 -g3''


Looks like an almost four years old bug.  Still I think we should install
the below _before_ the release.


--- a/src/frame.c
+++ b/src/frame.c
@@ -1308,7 +1308,7 @@ candidate_frame (Lisp_Object candidate, Lisp_Object frame, Lisp_Object minibuf)
 		     FRAME_FOCUS_FRAME (c)))
 	    return candidate;
 	}
-      else if (XFASTINT (minibuf) == 0)
+      else if (INTEGERP (minibuf) && XINT (minibuf) == 0)
 	{
 	  if (FRAME_VISIBLE_P (c) || FRAME_ICONIFIED_P (c))
 	    return candidate;


martin

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