bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size"

[Sam Halliday]

On 23 October 2016 at 15:07, Eli Zaretskii <eliz@gnu.org> wrote:
>> From: Sam Halliday <sam.halliday@gmail.com>
>>
>> ralloc.c is in "src".
>
> What about ralloc.o?

yes ralloc.o is there, and of course this is what I should have looked
for before because ralloc.c is clearly version controlled, sorry! :-)

>> Running the failing command, the breakpoint didn't take... must be
>> something else.
>
> Probably some code calls 'signal' or 'error' directly.  A breakpoint
> in Fsignal should catch that.  Unfortunately, it could trigger many
> times before, so if that happens, let me know if you need help in
> making the breakpoint more selective.
>
>> Processing OKURI-NASI entries ...
>> processed 10% ...
>> processed 20% ...
>> processed 30% ...
>> processed 40% ...
>> Args out of range: #("七宝焼/" 0 4 (charset japanese-jisx0208)), -5, nil
>
> Note that the error is slightly different now (a different string and
> the argument is -5 instead of -6), and also in a slightly different
> place of the build (after 40% instead of 20%).

breaking on Fsignal is hitting the problem... not sure what to do
here. I can type "bt" but that's where my gdb skillz end... do you
want me to do anything else or is this enough? I'd imagine seeing the
contents of error_symbol and data would be pretty useful. I'm not sure
the etc/DEBUG .gdbinit file is being loaded properly when invoked from
the leim directory.

EMACSLOADPATH= gdb ../src/emacs
GNU gdb (GDB) 7.12
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For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ../src/emacs...done.
(gdb) break Fsignal
Breakpoint 1 at 0x634e00: file eval.c, line 1476.
(gdb) run -batch --no-site-file --no-site-lisp -batch -l ja-dic-cnv -f
batch-skkdic-convert -dir "./../lisp/leim/ja-dic"
"SKK-DIC/SKK-JISYO.L"
Starting program: /home/fommil/build/emacs-git/emacs/src/emacs -batch
--no-site-file --no-site-lisp -batch -l ja-dic-cnv -f
batch-skkdic-convert -dir "./../lisp/leim/ja-dic"
"SKK-DIC/SKK-JISYO.L"
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7fffe72e5700 (LWP 21567)]
Reading file "/home/fommil/build/emacs-git/emacs/leim/SKK-DIC/SKK-JISYO.L" ...
Processing OKURI-ARI entries ...
Processing POSTFIX entries ...
Processing PREFIX entries ...
Collecting OKURI-NASI entries ...
collected 26% ...
collected 30% ...
collected 40% ...
collected 50% ...
collected 60% ...
collected 70% ...
collected 80% ...
collected 90% ...
Processing OKURI-NASI entries ...
processed 10% ...
processed 20% ...
processed 30% ...
processed 40% ...

Thread 1 "emacs" hit Breakpoint 1, Fsignal (error_symbol=...,
data=...) at eval.c:1476
1476    = (NILP (error_symbol) ? Fcar (data) : error_symbol);
(gdb) bt
#0  0x0000000000634e00 in Fsignal (error_symbol=..., data=...) at eval.c:1476
#1  0x00000000006351d9 in xsignal (error_symbol=..., data=...) at eval.c:1582
#2  0x00000000006352ae in xsignal3 (error_symbol=..., arg1=...,
arg2=..., arg3=...) at eval.c:1609
#3  0x0000000000614d16 in args_out_of_range_3 (a1=..., a2=..., a3=...)
at data.c:169
#4  0x000000000063f687 in validate_subarray (array=..., from=...,
to=..., size=4, ifrom=0x7fffffff6e18, ito=0x7fffffff6e10) at
fns.c:1210
#5  0x000000000063f70c in Fsubstring (string=..., from=..., to=...) at
fns.c:1235
#6  0x0000000000636da4 in eval_sub (form=...) at eval.c:2177
#7  0x0000000000636c98 in eval_sub (form=...) at eval.c:2159
#8  0x0000000000631bb4 in Fif (args=...) at eval.c:385
#9  0x00000000006369df in eval_sub (form=...) at eval.c:2124
#10 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#11 0x0000000000633be9 in Fwhile (args=...) at eval.c:970
#12 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#13 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#14 0x0000000000633fb0 in internal_catch (tag=..., func=0x631e2e
<Fprogn>, arg=...) at eval.c:1079
#15 0x0000000000633f64 in Fcatch (args=...) at eval.c:1056
#16 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#17 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#18 0x0000000000633ad3 in Flet (args=...) at eval.c:951
#19 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#20 0x0000000000631afc in Fand (args=...) at eval.c:366
#21 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#22 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#23 0x0000000000633ad3 in Flet (args=...) at eval.c:951
#24 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#25 0x0000000000631afc in Fand (args=...) at eval.c:366
#26 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#27 0x0000000000631a31 in For (args=...) at eval.c:346
#28 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#29 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#30 0x0000000000633ad3 in Flet (args=...) at eval.c:951
#31 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#32 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#33 0x0000000000639184 in funcall_lambda (fun=..., nargs=5,
arg_vector=0x0) at eval.c:2921
#34 0x00000000006389cd in apply_lambda (fun=..., args=..., count=77)
at eval.c:2799
#35 0x0000000000637145 in eval_sub (form=...) at eval.c:2246
#36 0x0000000000631a31 in For (args=...) at eval.c:346
#37 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#38 0x0000000000631afc in Fand (args=...) at eval.c:366
#39 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#40 0x0000000000631a31 in For (args=...) at eval.c:346
#41 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#42 0x0000000000631bb4 in Fif (args=...) at eval.c:385
#43 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#44 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#45 0x0000000000633ad3 in Flet (args=...) at eval.c:951
#46 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#47 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#48 0x0000000000633be9 in Fwhile (args=...) at eval.c:970
#49 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#50 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#51 0x0000000000633ad3 in Flet (args=...) at eval.c:951
#52 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#53 0x0000000000631afc in Fand (args=...) at eval.c:366
#54 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#55 0x0000000000631a31 in For (args=...) at eval.c:346
#56 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#57 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#58 0x0000000000633ad3 in Flet (args=...) at eval.c:951
#59 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#60 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#61 0x0000000000639184 in funcall_lambda (fun=..., nargs=6,
arg_vector=0x0) at eval.c:2921
#62 0x00000000006389cd in apply_lambda (fun=..., args=..., count=55)
at eval.c:2799
#63 0x0000000000637145 in eval_sub (form=...) at eval.c:2246
#64 0x0000000000636c98 in eval_sub (form=...) at eval.c:2159
#65 0x0000000000631afc in Fand (args=...) at eval.c:366
#66 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#67 0x0000000000631a31 in For (args=...) at eval.c:346
#68 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#69 0x0000000000631bb4 in Fif (args=...) at eval.c:385
#70 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#71 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#72 0x0000000000633be9 in Fwhile (args=...) at eval.c:970
#73 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#74 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#75 0x0000000000633ad3 in Flet (args=...) at eval.c:951
#76 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#77 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#78 0x0000000000639184 in funcall_lambda (fun=..., nargs=3,
arg_vector=0x0) at eval.c:2921
#79 0x00000000006389cd in apply_lambda (fun=..., args=..., count=43)
at eval.c:2799
#80 0x0000000000637145 in eval_sub (form=...) at eval.c:2246
#81 0x0000000000632122 in Fsetq (args=...) at eval.c:502
#82 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#83 0x0000000000631bb4 in Fif (args=...) at eval.c:385
#84 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#85 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#86 0x0000000000633ad3 in Flet (args=...) at eval.c:951
#87 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#88 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#89 0x0000000000633be9 in Fwhile (args=...) at eval.c:970
#90 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#91 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#92 0x0000000000633ad3 in Flet (args=...) at eval.c:951
#93 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#94 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#95 0x0000000000622ec9 in Fsave_current_buffer (args=...) at editfns.c:1027
#96 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#97 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#98 0x0000000000639184 in funcall_lambda (fun=..., nargs=2,
arg_vector=0x0) at eval.c:2921
#99 0x00000000006389cd in apply_lambda (fun=..., args=..., count=27)
at eval.c:2799
#100 0x0000000000637145 in eval_sub (form=...) at eval.c:2246
#101 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#102 0x0000000000633ad3 in Flet (args=...) at eval.c:951
#103 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#104 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#105 0x0000000000622ec9 in Fsave_current_buffer (args=...) at editfns.c:1027
#106 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#107 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#108 0x0000000000633566 in FletX (args=...) at eval.c:887
#109 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#110 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#111 0x0000000000639184 in funcall_lambda (fun=..., nargs=2,
arg_vector=0x0) at eval.c:2921
#112 0x00000000006389cd in apply_lambda (fun=..., args=..., count=15)
at eval.c:2799
#113 0x0000000000637145 in eval_sub (form=...) at eval.c:2246
#114 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#115 0x0000000000633ad3 in Flet (args=...) at eval.c:951
#116 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#117 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#118 0x0000000000631cbc in Fif (args=...) at eval.c:389
#119 0x00000000006369df in eval_sub (form=...) at eval.c:2124
#120 0x0000000000631e85 in Fprogn (body=...) at eval.c:431
#121 0x0000000000639184 in funcall_lambda (fun=..., nargs=0,
arg_vector=0x0) at eval.c:2921
#122 0x000000000063875e in Ffuncall (nargs=1, args=0x7fffffffc6e0) at
eval.c:2759
#123 0x0000000000683e8a in exec_byte_code (bytestr=..., vector=...,
maxdepth=..., args_template=..., nargs=1, args=0x7fffffffcf88) at
bytecode.c:880
#124 0x0000000000638d80 in funcall_lambda (fun=..., nargs=1,
arg_vector=0x7fffffffcf80) at eval.c:2862
#125 0x0000000000638659 in Ffuncall (nargs=2, args=0x7fffffffcf78) at
eval.c:2747
#126 0x0000000000683e8a in exec_byte_code (bytestr=..., vector=...,
maxdepth=..., args_template=..., nargs=0, args=0x7fffffffd878) at
bytecode.c:880
#127 0x0000000000638d80 in funcall_lambda (fun=..., nargs=0,
arg_vector=0x7fffffffd878) at eval.c:2862
#128 0x0000000000638659 in Ffuncall (nargs=1, args=0x7fffffffd870) at
eval.c:2747
#129 0x0000000000683e8a in exec_byte_code (bytestr=..., vector=...,
maxdepth=..., args_template=..., nargs=0, args=0x7fffffffe040) at
bytecode.c:880
#130 0x0000000000638d80 in funcall_lambda (fun=..., nargs=0,
arg_vector=0x7fffffffe040) at eval.c:2862
#131 0x00000000006389cd in apply_lambda (fun=..., args=..., count=4)
at eval.c:2799
#132 0x0000000000636f3e in eval_sub (form=...) at eval.c:2216
#133 0x00000000006363f8 in Feval (form=..., lexical=...) at eval.c:1993
#134 0x0000000000587ce2 in top_level_2 () at keyboard.c:1121
#135 0x00000000006349f6 in internal_condition_case (bfun=0x587cc5
<top_level_2>, handlers=..., hfun=0x5876f3 <cmd_error>) at eval.c:1314
#136 0x0000000000587d23 in top_level_1 (ignore=...) at keyboard.c:1129
#137 0x0000000000633fb0 in internal_catch (tag=..., func=0x587ce4
<top_level_1>, arg=...) at eval.c:1079
#138 0x0000000000587c1d in command_loop () at keyboard.c:1090
#139 0x00000000005871f5 in recursive_edit_1 () at keyboard.c:697
#140 0x00000000005873ec in Frecursive_edit () at keyboard.c:768
#141 0x0000000000585152 in main (argc=11, argv=0x7fffffffe5d8) at emacs.c:1626