repeatable cvs(1) coredump

[Thomas Klausner <wiz%NetBSD.org@localhost>]

Hi!

On 9.99.86/20210714/amd64 I can repeatedly make cvs(1) dump core by:

cd /usr/pkgsrc/devel/py-mercurial
cvs log Makefile | less
q # i.e. exit less(1)

Backtrace:

(gdb) bt
#0  0x0000786f41f96a74 in strncmp () from /usr/lib/libc.so.12
#1  0x0000786f41f1fd61 in __getenvslot (name=name@entry=0x786f41fb2409 "NLSPATH", l_name=l_name@entry=7, 
    allocate=allocate@entry=false) at /usr/src/lib/libc/stdlib/_env.c:261
#2  0x0000786f41f1fef1 in __findenvvar (name=name@entry=0x786f41fb2409 "NLSPATH", l_name=l_name@entry=7)
    at /usr/src/lib/libc/stdlib/_env.c:333
#3  0x0000786f41f1f946 in getenv (name=name@entry=0x786f41fb2409 "NLSPATH")
    at /usr/src/lib/libc/stdlib/getenv.c:73
#4  0x0000786f41f6cb57 in _catopen_l (name=name@entry=0x786f41fa2bb1 "libc", oflag=oflag@entry=1, 
    loc=loc@entry=0x786f421f2ec0 <_lc_global_locale>) at /usr/src/lib/libc/nls/catopen.c:94
#5  0x0000786f41f6cbd1 in _catopen_l (name=name@entry=0x786f41fa2bb1 "libc", oflag=oflag@entry=1, 
    loc=loc@entry=0x786f421f2ec0 <_lc_global_locale>) at /usr/src/lib/libc/nls/catopen.c:154
#6  0x0000786f41f6b6c9 in _strerror_lr (num=num@entry=32, 
    buf=buf@entry=0x786f4633c000 <error: Cannot access memory at address 0x786f4633c000>, buflen=buflen@entry=2048, 
    loc=loc@entry=0x786f421f2ec0 <_lc_global_locale>) at /usr/src/lib/libc/string/strerror_r.c:63
#7  0x0000786f41f64052 in _strerror_l (num=num@entry=32, loc=0x786f421f2ec0 <_lc_global_locale>)
    at /usr/src/lib/libc/string/strerror.c:94
#8  0x0000786f41f640bc in strerror (num=num@entry=32) at /usr/src/lib/libc/compat/../locale/setlocale_local.h:93
#9  0x00000001b7c2d1ec in error (status=1, errnum=32, message=<optimized out>)
    at /usr/src/external/gpl2/xcvs/bin/xcvs/../../dist/src/error.c:164
#10 0x0000786f41f6bc4f in __cxa_finalize (dso=dso@entry=0x0) at /usr/src/lib/libc/stdlib/atexit.c:222
#11 0x0000786f41f6b86d in exit (status=status@entry=0) at /usr/src/lib/libc/stdlib/exit.c:60
#12 0x00000001b7c9512b in main (argc=<optimized out>, argv=<optimized out>)
    at /usr/src/external/gpl2/xcvs/bin/xcvs/../../dist/src/main.c:1233

I haven't seen this problem before, anyone else?
 Thomas