According to this new stack trace, xerces library tried to allocate 12 bytes
#3 0xb6d57508 in xercesc_3_1::MemoryManagerImpl::allocate
(this=0x26f20, size=12)
at xercesc/internal/MemoryManagerImpl.cpp:40
then c++ library called malloc to allocate 4294967295 bytes
#1 0xb6fb2b30 in malloc (n=4294967295) at src/malloc/malloc.c:346
#2 0xb6a76a30 in operator new(unsigned int) ()
from
/home/dupes/data/projects/epri/cea2045/openwrt/source/rpi/openwrt/scripts/../staging_dir/target-arm_arm1176jzf-s+vfp_musl-1.1.15_eabi/root-brcm2708/usr/lib/libstdc++.so.6
and then received SIGSEGV inside malloc.c
#0 0xb6fb1fc4 in unbin (c=c@entry=0xb69e9348, i=i@entry=42)
at src/malloc/malloc.c:219
I see no pointers that the problem is in the xerces library.
Good luck!
Vitaly
Benjamin DuPont wrote:
I turned off optimizations so the parameters aren't hidden. I don't
think malloc is actually trying to allocate a max int memory block.
Here's the new stack trace:
Program received signal SIGSEGV, Segmentation fault.
0xb6fb1fc4 in unbin (c=c@entry=0xb69e9348, i=i@entry=42) at
src/malloc/malloc.c:219
219 c->next->prev = c->prev;
(gdb) bt
#0 0xb6fb1fc4 in unbin (c=c@entry=0xb69e9348, i=i@entry=42)
at src/malloc/malloc.c:219
#1 0xb6fb2b30 in malloc (n=4294967295) at src/malloc/malloc.c:346
#2 0xb6a76a30 in operator new(unsigned int) ()
from
/home/dupes/data/projects/epri/cea2045/openwrt/source/rpi/openwrt/scripts/../staging_dir/target-arm_arm1176jzf-s+vfp_musl-1.1.15_eabi/root-brcm2708/usr/lib/libstdc++.so.6
#3 0xb6d57508 in xercesc_3_1::MemoryManagerImpl::allocate
(this=0x26f20, size=12)
at xercesc/internal/MemoryManagerImpl.cpp:40
#4 0xb6c3c9f4 in xercesc_3_1::ValueHashTableOf<bool,
xercesc_3_1::StringHasher>::put (this=0xb6fff4a8, key=0xb6ea61f8
<xercesc_3_1::gEncodingArray+14720>,
valueToAdopt=@0xbefffdf3: true) at
./xercesc/util/ValueHashTableOf.c:203
#5 0xb6c3c1e0 in xercesc_3_1::EncodingValidator::initializeRegistry (
this=0xb6fff490) at xercesc/util/EncodingValidator.cpp:79
#6 0xb6c3c054 in xercesc_3_1::EncodingValidator::EncodingValidator (
this=0xb6fff490) at xercesc/util/EncodingValidator.cpp:50
#7 0xb6c3bf6c in
xercesc_3_1::XMLInitializer::initializeEncodingValidator ()
at xercesc/util/EncodingValidator.cpp:35
#8 0xb6c7ff08 in xercesc_3_1::XMLInitializer::initializeStaticData ()
at xercesc/util/XMLInitializer.cpp:44
#9 0xb6c3ec78 in xercesc_3_1::XMLPlatformUtils::Initialize (
locale=0x21004 <xercesc_3_1::XMLUni::fgXercescDefaultLocale> "en_US",
nlsHome=0x0, panicHandler=0x0, memoryManager=0x0)
at xercesc/util/PlatformUtils.cpp:307
#10 0x00010858 in main ()
On 10/04/2016 09:56 AM, Vitaly Prapirny wrote:
I know nothing about your platform. If I understand your stack trace
correctly, the library failed to allocate block of 4294967168 bytes.
You can try to rebuild xerces with
typedef unsigned long XMLSize_t;
Or simply add debug output into the 'void ValueHashTableOf<TVal,
THasher>::rehash()' near ./xercesc/util/ValueHashTableOf.c:225 and
see why the library wants to allocate so huge block.
Good luck!
Vitaly
Benjamin DuPont wrote:
Thanks Vitaly. Do you have any tips on how to fix this? Looks to
be defined as a size_t which is probably correct:
#define XERCES_SIZE_T size_t
typedef XERCES_SIZE_T XMLSize_t;
Ben
On 10/04/2016 02:10 AM, Vitaly Prapirny wrote:
Hi Benjamin,
Seems like XMLSize_t type has been defined incorrectly on your
platform.
Good luck!
Vitaly
Benjamin DuPont wrote:
I'm trying to build xerces for OpenWRT on the rpi zero. xerces
segfaults in XMLPlatformUtils::Initialize(). I've tried 3.1.1,
3.1.2, and 3.1.4 all with the same result. I'm building with the
following arguments:
--disable-pretty-make \
--enable-transcoder-iconv \
--enable-netaccessor-socket \
--enable-msgloader-inmemory
Here's the stack trace:
#0 0xb6fb1fc4 in unbin (c=c@entry=0xb6bad348, i=i@entry=42) at
src/malloc/malloc.c:219
#1 0xb6fb2b30 in malloc (n=4294967168) at src/malloc/malloc.c:346
#2 0xb6c3aa30 in operator new(unsigned int) ()
from
/home/dupes/data/projects/epri/cea2045/openwrt/source/rpi/openwrt/scripts/../staging_dir/target-arm_arm1176jzf-s+vfp_musl-1.1.15_eabi/root-brcm2708/usr/lib/libstdc++.so.6
#3 0xb6e34268 in xercesc_3_1::MemoryManagerImpl::allocate
(this=<optimized out>,
size=<optimized out>) at
xercesc/internal/MemoryManagerImpl.cpp:40
#4 0xb6db9e1c in xercesc_3_1::ValueHashTableOf<bool,
xercesc_3_1::StringHasher>::rehash (
this=this@entry=0xb6f88438) at
./xercesc/util/ValueHashTableOf.c:225
#5 0xb6db9a3c in xercesc_3_1::ValueHashTableOf<bool,
xercesc_3_1::StringHasher>::put (
valueToAdopt=<optimized out>, key=0xb6ed0ae6
<xercesc_3_1::gEncodingArray+15088>,
this=0xb6f88438) at ./xercesc/util/ValueHashTableOf.c:186
#6 xercesc_3_1::EncodingValidator::initializeRegistry
(this=this@entry=0xb6f88420)
at xercesc/util/EncodingValidator.cpp:79
#7 0xb6db9b38 in
xercesc_3_1::EncodingValidator::EncodingValidator (this=0xb6f88420)
at xercesc/util/EncodingValidator.cpp:50
#8 0xb6db9b5c in
xercesc_3_1::XMLInitializer::initializeEncodingValidator ()
at xercesc/util/EncodingValidator.cpp:34
#9 0xb6dd80fc in
xercesc_3_1::XMLInitializer::initializeStaticData ()
at xercesc/util/XMLInitializer.cpp:44
#10 0x000105c4 in main ()
