Hello Ralph,
I was bitten by something similar and so I've rebuilt nmh-1.7-RC1 with
debug symbols, attached some (hopefully) useful debug information (I've
used gdb though because AFAIK ltrace isn't available on NetBSD).
Ralph Corderoy writes:
> [...]
> Could you run this scan command with 1.7-RC1 to make sure it still has
> the assert(3) failure on the problem email.
>
> scan -format '%(decode{subject})' cur
> [...]
I've mhstore-ed Norm's problematic email as `1' in the current directory
and reproduced it via:
% scan -format '%(decode{subject})' +. 1
assertion "w >= 0" failed: file "sbr/fmt_scan.c", line 291, function
"cpstripped"
Abort (core dumped)
Exit 134
Looking at the problematic char on gdb (this is on NetBSD/amd64 8.99.1):
% gdb -core ./scan.core `which scan`
Reading symbols from /usr/pkg/bin/scan...done.
[New process 1]
Core was generated by `scan'.
Program terminated with signal SIGABRT, Aborted.
#0 0x00007e7fe9b2725a in _lwp_kill () from /usr/lib/libc.so.12
(gdb) bt
#0 0x00007e7fe9b2725a in _lwp_kill () from /usr/lib/libc.so.12
#1 0x00007e7fe9b26e75 in abort () at /usr/src/lib/libc/stdlib/abort.c:74
#2 0x00007e7fe9b26a03 in __assert13 (file=file@entry=0x4171ff
"sbr/fmt_scan.c", line=line@entry=291,
function=function@entry=0x417600 <__func__.6577> "cpstripped",
failedexpr=failedexpr@entry=0x4171f8 "w >= 0")
at /usr/src/lib/libc/gen/assert.c:72
#3 0x0000000000407552 in cpstripped (dest=dest@entry=0x7e7fe9901560, max=136,
str=0x7f7fffc11e41 "\360\237\225\266Sun\342\200\231s out, savings
ON\342\200\224shop major appliance deals now",
str@entry=0x7f7fffc11e40 " \360\237\225\266Sun\342\200\231s out, savings
ON\342\200\224shop major appliance deals now")
at sbr/fmt_scan.c:291
#4 0x0000000000407bf7 in fmt_scan (format=<optimized out>,
scanlp=0x7e7fe9901560, width=136, dat=dat@entry=0x623c10 <dat>,
callbacks=callbacks@entry=0x0) at sbr/fmt_scan.c:450
#5 0x0000000000403dda in scan (inb=inb@entry=0x7e7fe9d83460,
innum=innum@entry=1, outnum=outnum@entry=0,
nfs=nfs@entry=0x7e7fe9901500 "%(decode{subject})", width=<optimized out>,
width@entry=-1, curflg=<optimized out>, unseen=0,
folder=0x7e7fe9918268 "/tmp/m", size=0, noisy=1, scanl=0x7f7fffc14408) at
uip/scansbr.c:326
#6 0x0000000000403435 in main (argc=<optimized out>, argv=<optimized out>) at
uip/scan.c:256
(gdb) f 3
#3 0x0000000000407552 in cpstripped (dest=dest@entry=0x7e7fe9901560, max=136,
str=0x7f7fffc11e41 "\360\237\225\266Sun\342\200\231s out, savings
ON\342\200\224shop major appliance deals now",
str@entry=0x7f7fffc11e40 " \360\237\225\266Sun\342\200\231s out, savings
ON\342\200\224shop major appliance deals now")
at sbr/fmt_scan.c:291
291 assert(w >= 0);
(gdb) list
286
287 prevCtrl = 0;
288
289 #ifdef MULTIBYTE_SUPPORT
290 w = wcwidth(wide_char);
291 assert(w >= 0);
292 if (max >= (size_t) w) {
293 charstring_push_back_chars (dest, altstr ? altstr : str,
char_len, w);
294 max -= w;
295 str += char_len;
(gdb) print w
$1 = <optimized out>
(gdb) print wide_char
$2 = 128374 L'\x1f576'
(gdb) quit
L'\x1f576' (in wide_char) is probably the `dark sunglasses' (U+1F576)
unicode character and directly trying to:
wcwidth(L'\x1f576')
...returns `-1'.
If you need any further information please let me know!
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