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bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for
From: |
Noam Postavsky |
Subject: |
bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames |
Date: |
Thu, 25 Jan 2018 20:46:18 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.0.90 (gnu/linux) |
Noam Postavsky <npostavs@users.sourceforge.net> writes:
> On Thu, Jan 25, 2018 at 11:36 AM, Michael Albinus
> <michael.albinus@gmx.de> wrote:
>
>> Emacs is frozen, and there is the error message in the shell Emacs is
>> started from:
>>
>> emacs: malloc.c:2427: sysmalloc: Assertion `(old_top == initial_top
>> (av) && old_size == 0) || ((unsigned long) (old_size) >= MINSIZE &&
>> prev_inuse (old_top) && ((unsigned long) old_end & (pagesize - 1))
>> == 0)' failed.
>> Fatal error 6: Aborted
>
> Oh, that's what I got from `file-name-all-completions' before fixing
> it. My guess is that it's due to stack overflow. Although it is a bit
> strange to get heap corruption from stack usage, maybe a bad
> interaction with the stack overflow recovery mechanism?
It's not related to stack overflow recovery, it still happens with
attempt-stack-overflow-recovery set to nil. The problem appears to be
that we hit the limit in grow_specpdl(), and then call signal_error
which does Ffuncall and then record_in_backtrace writes to specdl, this
latter write is invalid since we failed to grow specdl before. Thus
memory corruption, undefined behaviour, etc.
#0 0x000000000063999d in record_in_backtrace (function=XIL(0xd9ea380),
args=0xffef5b188, nargs=2)
at ../../src/eval.c:2096
#1 0x000000000063b8c9 in Ffuncall (nargs=3, args=0xffef5b180) at
../../src/eval.c:2746
#2 0x000000000063b320 in call2 (fn=XIL(0xd9ea380), arg1=XIL(0x5250),
arg2=XIL(0x1161fc03))
at ../../src/eval.c:2625
#3 0x00000000006381db in signal_or_quit (error_symbol=XIL(0x5250),
data=XIL(0x1161fc03),
keyboard_quit=false) at ../../src/eval.c:1565
#4 0x000000000063806d in Fsignal (error_symbol=XIL(0x5250),
data=XIL(0x1161fc03))
at ../../src/eval.c:1514
#5 0x000000000057939a in xsignal (error_symbol=XIL(0x5250),
data=XIL(0x1161fc03))
at ../../src/lisp.h:3861
#6 0x0000000000638704 in signal_error (s=0x75e388 "Variable binding depth
exceeds max-specpdl-size",
arg=XIL(0)) at ../../src/eval.c:1688
#7 0x00000000006398cd in grow_specpdl () at ../../src/eval.c:2080
(More stack frames follow...)
Lisp Backtrace:
"stringp" (0xfef5b398)
"file-name-non-special" (0xfef5bb58)
"file-newer-than-file-p" (0xfef5bf38)
"apply" (0xfef5c130)
"file-name-non-special" (0xfef5c6f8)
"file-newer-than-file-p" (0xfef5c998)
"apply" (0xfef5cb90)
"file-name-non-special" (0xfef5d158)
"file-newer-than-file-p" (0xfef5d3f8)
"apply" (0xfef5d5f0)
"file-name-non-special" (0xfef5dbb8)
"file-newer-than-file-p" (0xfef5de58)
"apply" (0xfef5e050)
[...]
> I'll take a look at the edebug problems later today.
Turns out this is just Bug#10577. You can work around it by loading
subr-x before instrumenting forms which use when-let*.
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, phst, 2018/01/24
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Philipp Stephani, 2018/01/24
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Noam Postavsky, 2018/01/24
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Philipp Stephani, 2018/01/24
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Noam Postavsky, 2018/01/25
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Michael Albinus, 2018/01/25
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Noam Postavsky, 2018/01/25
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Michael Albinus, 2018/01/25
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Noam Postavsky, 2018/01/25
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames,
Noam Postavsky <=
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Michael Albinus, 2018/01/26
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Noam Postavsky, 2018/01/26
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Michael Albinus, 2018/01/28
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Noam Postavsky, 2018/01/28
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Michael Albinus, 2018/01/28
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Eli Zaretskii, 2018/01/30
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Michael Albinus, 2018/01/30
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Philipp Stephani, 2018/01/30
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Noam Postavsky, 2018/01/30
- bug#30243: 26.0.91; Infinite recursion in `make-auto-save-file-name' for quoted filenames, Eli Zaretskii, 2018/01/31