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http://bugs.exim.org/show_bug.cgi?id=1235
Summary: Stackoverflow caused by geshi's java regex
Product: PCRE
Version: 8.30
Platform: Other
OS/Version: Linux
Status: NEW
Severity: bug
Priority: high
Component: Code
AssignedTo: ph10@???
ReportedBy: bluewind@???
CC: pcre-dev@???
Created an attachment (id=558)
--> (
http://bugs.exim.org/attachment.cgi?id=558)
pcretest example
The attached pcretest causes a segfault on my 64bit machines, 32bit work fine.
Topmost 2 frames from my backtrace:
#0 0x00007ffff7982f11 in match (eptr=0x62a1e6 "——·c + ———·z =
6\n", ' ' <repeats 17 times>, "10 100 100", ' ' <repeats 16
times>, "\n\n 10·a + 100·b + c - z = 90\n\n
a + 10·b + 100·c - z = "..., ecode=0x638feb
"\036<\036D\036O\036T\036>q", mstart=<error reading variable: Cannot access
memory at address 0x7fffff7fed58>, offset_top=<error reading variable: Cannot
access memory at address 0x7fffff7fed54>, md=<error reading variable: Cannot
access memory at address 0x7fffff7fed48>, eptrb=<error reading variable: Cannot
access memory at address 0x7fffff7fed40>, rdepth=10262) at pcre_exec.c:473
#1 0x00007ffff7983cef in match (eptr=0x62a1e6 "——·c + ———·z =
6\n", ' ' <repeats 17 times>, "10 100 100", ' ' <repeats 16
times>, "\n\n 10·a + 100·b + c - z = 90\n\n
a + 10·b + 100·c - z = "..., ecode=0x638fe8 "}",
mstart=0x6279d5 "6\n\n 10a + 100b + c - z = 90\n\n a + 10b + 100c - z =
198\n\n \n\n Umformen und sortieren (Variablen alphabetisch links, Konstanten
rechts):\n\n 100a + 10b + c - z = 0\n\n a + b + c = 6\n\n 10a + 100b
"..., offset_top=6, md=0x7fffffffb770, eptrb=0x0, rdepth=10261) at
pcre_exec.c:1044
I haven't tested if it works in previous pcre versions.
Arch Linux
pcre 8.30
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