Hi,
info from texinfo 6.4 crashes when the first char of a regexp i-search
is a backslash, and then something is typed: C-s \ x
regexp error: Trailing backslash
Program received signal SIGSEGV, Segmentation fault.
__GI___libc_free (mem=0xa47) at malloc.c:2928
2928 malloc.c: No such file or directory.
(gdb) l
2923 in malloc.c
(gdb) bt
#0 __GI___libc_free (mem=0xa47) at malloc.c:2928
#1 0x000055555556f85c in free_matches (state=state@entry=0x7fffffffe150)
at search.c:480
#2 0x0000555555572733 in info_search_in_node_internal (
window=window@entry=0x5555558444c0, node=node@entry=0x55555584eb80,
string=string@entry=0x55555584e6a0 "\\", start=<optimized out>,
dir=dir@entry=1, case_sensitive=case_sensitive@entry=0, match_regexp=1,
poff=0x7fffffffe308) at session.c:3957
#3 0x0000555555572b25 in info_search_internal (
string=string@entry=0x55555584e6a0 "\\",
window=window@entry=0x5555558444c0, dir=<optimized out>, case_sensitive=0,
start_off=start_off@entry=0x7fffffffe308) at session.c:4080
#4 0x000055555557362e in incremental_search (window=0x5555558444c0,
count=<optimized out>) at session.c:5198
#5 0x0000555555578199 in info_read_and_dispatch () at session.c:253
#6 0x000055555557834b in info_session (ref_list=<optimized out>,
user_filename=<optimized out>, error=<optimized out>) at session.c:221
#7 0x000055555555c9e4 in main (argc=<optimized out>, argv=<optimized out>)
at info.c:1079
(gdb) p *state
$2 = {matches = 0xa47, match_count = 4096, match_alloc = 8,
finished = 1501678829, regex = {buffer = 0x18f23b05, allocated = 1484145823,
used = 0, syntax = 1484226471,
fastmap = 0x29937c30 <error: Cannot access memory at address 0x29937c30>,
translate = 0x0, re_nsub = 0, can_be_null = 0, regs_allocated = 0,
fastmap_accurate = 0, no_sub = 0, not_bol = 0, not_eol = 0,
newline_anchor = 0}, buffer = 0x0, buflen = 3267013710450018048}
result is search_invalid, regcomp returned REG_EESCAPE, and I think
state is uninitialized and thus contains a "pointer" that crashes free().
Running Void Linux on x86_64/glibc, Linux 4.12.1, glibc glibc-2.25.
Thanks,
--
Leah Neukirchen <[email protected]> http://leah.zone
