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bug#24358: 25.1.50; re-search-forward errors with "Variable binding dept
From: |
npostavs |
Subject: |
bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size" |
Date: |
Sat, 08 Oct 2016 14:52:26 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) |
Eli Zaretskii <eliz@gnu.org> writes:
>
> Do you see buffer text actually changing its address in this scenario?
> Otherwise, we might be chasing a wild goose.
Yes, now that I know what to look for, it's easy enough. I added just
this to .gdbinit:
break search_command if (bound == 0)
commands
watch current_buffer->text->beg
continue
end
# break only on the 2nd call to search_command
ignore 3 1
And here is the result:
Thread 1 "emacs" hit Breakpoint 3, search_command (string=25301860,
bound=0, noerror=44544, count=0,
direction=1, RE=1, posix=false) at search.c:1024
1024 EMACS_INT n = direction;
Hardware watchpoint 4: current_buffer->text->beg
Thread 1 "emacs" hit Hardware watchpoint 4: current_buffer->text->beg
Old value = (unsigned char *) 0x18351b8 ""
New value = (unsigned char *) 0x188a1b8 ""
r_alloc_sbrk (size=290816) at ralloc.c:818
818 for (b = last_bloc; b != NIL_BLOC; b = b->prev)
(gdb) bt 12
#0 r_alloc_sbrk (size=290816) at ralloc.c:818
#1 0x00000000006ced96 in get_contiguous_space (size=290816,
position=0x1833000) at gmalloc.c:476
#2 0x00000000006cf92a in _malloc_internal_nolock (size=163840) at
gmalloc.c:844
#3 0x00000000006cfe9d in _malloc_internal (size=163840) at gmalloc.c:927
#4 0x00000000006cff1a in gmalloc (size=163840) at gmalloc.c:951
#5 0x00000000006d14e4 in malloc (size=163840) at gmalloc.c:1827
#6 0x00000000005f3e6b in lmalloc (size=163840) at alloc.c:1414
#7 0x00000000005f3356 in xmalloc (size=163840) at alloc.c:821
#8 0x00000000005f38e4 in record_xmalloc (size=163840) at alloc.c:1038
#9 0x00000000005ee233 in re_match_2_internal (bufp=0xd6d650
<searchbufs+5072>,
string1=0x1835988 "DESCRIPTION;LANGUAGE=en-US:Nn
Nnnnn\\,\\n\\nNnnnnnnnn nnn nnn nnnnnn nn nnnnnn\n nnnnnnn nnnn nnnnnnnnn. N
nnnn nnnnnnnnn nn nnn nnnnnnnn nnnnnnn nnn nn nn\n nn nn-nnnnnnn nn Nnnnnnn nn
99.99 NNNN\\n\\nNnnn "..., size1=0,
string2=0x1835988 "DESCRIPTION;LANGUAGE=en-US:Nn
Nnnnn\\,\\n\\nNnnnnnnnn nnn nnn nnnnnn nn nnnnnn\n nnnnnnn nnnn nnnnnnnnn. N
nnnn nnnnnnnnn nn nnn nnnnnnnn nnnnnnn nnn nn nn\n nn nn-nnnnnnn nn Nnnnnnn nn
99.99 NNNN\\n\\nNnnn "..., size2=40918, pos=0, regs=0xd6deb0 <search_regs>,
stop=40918)
at regex.c:5844
#10 0x00000000005e9022 in re_search_2 (bufp=0xd6d650 <searchbufs+5072>,
str1=0x1835988 "DESCRIPTION;LANGUAGE=en-US:Nn Nnnnn\\,\\n\\nNnnnnnnnn
nnn nnn nnnnnn nn nnnnnn\n nnnnnnn nnnn nnnnnnnnn. N nnnn nnnnnnnnn nn nnn
nnnnnnnn nnnnnnn nnn nn nn\n nn nn-nnnnnnn nn Nnnnnnn nn 99.99 NNNN\\n\\nNnnn
"..., size1=0,
str2=0x1835988 "DESCRIPTION;LANGUAGE=en-US:Nn Nnnnn\\,\\n\\nNnnnnnnnn
nnn nnn nnnnnn nn nnnnnn\n nnnnnnn nnnn nnnnnnnnn. N nnnn nnnnnnnnn nn nnn
nnnnnnnn nnnnnnn nnn nn nn\n nn nn-nnnnnnn nn Nnnnnnn nn 99.99 NNNN\\n\\nNnnn
"..., size2=40918, startpos=0, range=40918, regs=0xd6deb0 <search_regs>,
stop=40918) at regex.c:4470
#11 0x00000000005d6c06 in search_buffer (string=25301860, pos=1,
pos_byte=1, lim=40891,
lim_byte=40919, n=1, RE=1, trt=20893029, inverse_trt=20483397,
posix=false) at search.c:1265
(More stack frames follow...)
Lisp Backtrace:
"re-search-forward" (0xffffc2e0)
"progn" (0xffffc460)
"unwind-protect" (0xffffc5a0)
"save-current-buffer" (0xffffc710)
"let" (0xffffc910)
"eval-buffer" (0xffffcbf0)
"load-with-code-conversion" (0xffffd158)
"load" (0xffffd4e8)
"command-line-1" (0xffffda30)
"command-line" (0xffffdfe8)
"normal-top-level" (0xffffe490)
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", npostavs, 2016/10/07
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", Eli Zaretskii, 2016/10/08
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", npostavs, 2016/10/08
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", Eli Zaretskii, 2016/10/08
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", Eli Zaretskii, 2016/10/08
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", npostavs, 2016/10/08
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", Eli Zaretskii, 2016/10/08
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size",
npostavs <=
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", Eli Zaretskii, 2016/10/08
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", npostavs, 2016/10/08
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", Eli Zaretskii, 2016/10/09
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", npostavs, 2016/10/12
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", Eli Zaretskii, 2016/10/13
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", npostavs, 2016/10/13
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", Eli Zaretskii, 2016/10/14
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", npostavs, 2016/10/18
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", Eli Zaretskii, 2016/10/19
- bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size", npostavs, 2016/10/19