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http://bugs.exim.org/show_bug.cgi?id=1223
Summary: Test failure on 10.7/i386 with JIT
Product: PCRE
Version: 8.30
Platform: x86
OS/Version: MacOS X
Status: NEW
Severity: bug
Priority: medium
Component: Code
AssignedTo: ph10@???
ReportedBy: daniel@???
CC: pcre-dev@???
I get a segfault during the tests on 10.7/i386 when built with --enable-jit.
I've also heard that a similar failure occurs on powerpc Macs with jit but I
can't find the report now. All tests pass with --disable-jit and also pass with
or without jit when built for x86_64. The output is:
---- Testing 8-bit library ----
Test 1: main functionality (Compatible with Perl >= 5.10)
OK
OK with study
./RunTest: line 299: 69991 Segmentation fault: 11 $sim $valgrind ./pcretest -q
$bmode $opt $testdata/testinput1 testtry
FAIL: RunTest
Crash report is:
Process: pcretest [69991]
Path: /Users/USER/Downloads/*/pcretest
Identifier: pcretest
Version: ??? (???)
Code Type: X86 (Native)
Parent Process: sh [69861]
Date/Time: 2012-03-27 09:06:21.019 -0400
OS Version: Mac OS X 10.7.3 (11D50)
Report Version: 9
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: 0x000000000000000d, 0x0000000000000000
VM Regions Near 0:
--> __PAGEZERO 0000000000000000-0000000000001000 [ 4K] ---/---
SM=NUL /Users/USER/Downloads/*
VM_ALLOCATE 0000000000001000-0000000000009000 [ 32K] ---/---
SM=NUL
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libdyld.dylib 0x905fe820 misaligned_stack_error_ + 0
1 libpcre.1.dylib 0x000b1b1f do_searchovector + 223
(pcre_jit_compile.c:4102)
2 ??? 0x00192a66 0 + 1649254
Thread 0 crashed with X86 Thread State (32-bit):
eax: 0x00000137 ebx: 0x78a7754b ecx: 0x7867ba57 edx: 0x7867ba55
edi: 0xc00035d0 esi: 0x78a77550 ebp: 0xbfffb4cc esp: 0xbfffb464
ss: 0x00000023 efl: 0x00010286 eip: 0x905fe820 cs: 0x0000001b
ds: 0x00000023 es: 0x00000023 fs: 0x00000000 gs: 0x0000000f
cr2: 0x00083b1d
Logical CPU: 0
It looks like the crash is due to a misaligned stack at pcre_jit_compile.c line
4102.
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