Invalid pointer with Ruby Enterprise

[slnc]

With ruby enterprise 1.8.7.2009.10 and tcmalloc installed I get this:

src/tcmalloc.cc:353] Attempt to free invalid pointer: 0x7fdf9da37960
Aborted

Without tcmalloc I get this:

*** glibc detected *** /usr/local/hosting/bin/ruby: free(): invalid pointer: 0x00007fbcd0a2a960 ***
======= Backtrace: =========
/lib/libc.so.6[0x7fbcd7a97dd6]
/lib/libc.so.6(cfree+0x6c)[0x7fbcd7a9c74c]
/usr/local/hosting/bin/ruby(ruby_xfree+0x1b)[0x42b6e4]
/usr/lib/libxml2.so.2(xmlFreeParserCtxt+0xc7)[0x7fbcd411db77]
/usr/local/hosting/bin/ruby[0x42b754]
/usr/local/hosting/bin/ruby(rb_gc_finalize_deferred+0x22)[0x42bade]
/usr/local/hosting/bin/ruby(rb_thread_schedule+0x20)[0x41be75]
/usr/local/hosting/bin/ruby[0x415f6a]
/usr/local/hosting/bin/ruby[0x417265]
/usr/local/hosting/bin/ruby[0x47602a]
/usr/local/hosting/bin/ruby[0x417f46]
/usr/local/hosting/bin/ruby[0x41898e]
/usr/local/hosting/bin/ruby[0x42078c]
/usr/local/hosting/bin/ruby[0x41fb77]
/usr/local/hosting/bin/ruby[0x420629]
/usr/local/hosting/bin/ruby[0x42003a]
/usr/local/hosting/bin/ruby[0x4162f1]
/usr/local/hosting/bin/ruby[0x418559]
/usr/local/hosting/bin/ruby[0x41898e]
/usr/local/hosting/bin/ruby[0x42078c]
/usr/local/hosting/bin/ruby[0x416574]
/usr/local/hosting/bin/ruby[0x415fba]
/usr/local/hosting/bin/ruby[0x418559]
/usr/local/hosting/bin/ruby[0x41898e]
/usr/local/hosting/bin/ruby[0x420967]
/usr/local/hosting/bin/ruby[0x415fba]
/usr/local/hosting/bin/ruby[0x41f352]
/usr/local/hosting/bin/ruby[0x415fba]
/usr/local/hosting/bin/ruby[0x418559]
/usr/local/hosting/bin/ruby[0x41898e]
/usr/local/hosting/bin/ruby[0x420967]
/usr/local/hosting/bin/ruby[0x418559]
/usr/local/hosting/bin/ruby[0x41898e]
/usr/local/hosting/bin/ruby(rb_call_super+0xab)[0x41e234]
/usr/local/hosting/bin/ruby[0x420ba6]
/usr/local/hosting/bin/ruby[0x418559]
/usr/local/hosting/bin/ruby[0x41898e]
/usr/local/hosting/bin/ruby[0x420967]
/usr/local/hosting/bin/ruby[0x418559]
/usr/local/hosting/bin/ruby[0x41898e]
/usr/local/hosting/bin/ruby[0x42078c]
/usr/local/hosting/bin/ruby[0x415fba]
/usr/local/hosting/bin/ruby[0x418559]
/usr/local/hosting/bin/ruby[0x41898e]
/usr/local/hosting/bin/ruby[0x42078c]
/usr/local/hosting/bin/ruby[0x416574]
/usr/local/hosting/bin/ruby[0x415fba]
/usr/local/hosting/bin/ruby[0x418559]
/usr/local/hosting/bin/ruby[0x41898e]
/usr/local/hosting/bin/ruby[0x42078c]
/usr/local/hosting/bin/ruby[0x41659c]
/usr/local/hosting/bin/ruby[0x415fba]
/usr/local/hosting/bin/ruby[0x417265]
/usr/local/hosting/bin/ruby[0x417943]
/usr/local/hosting/bin/ruby[0x417f46]
/usr/local/hosting/bin/ruby[0x41898e]
/usr/local/hosting/bin/ruby[0x42078c]
/usr/local/hosting/bin/ruby[0x415fba]
/usr/local/hosting/bin/ruby[0x415fba]
/usr/local/hosting/bin/ruby[0x41f352]
/usr/local/hosting/bin/ruby[0x417265]
/usr/local/hosting/bin/ruby(rb_ensure+0xa9)[0x411f41]
/usr/local/hosting/bin/ruby[0x417f46]
======= Memory map: ========
00400000-004b7000 r-xp 00000000 08:01 657251 /usr/local/hosting/bin/ruby
006b6000-006b7000 r--p 000b6000 08:01 657251 /usr/local/hosting/bin/ruby
006b7000-006b9000 rw-p 000b7000 08:01 657251 /usr/local/hosting/bin/ruby
006b9000-006d7000 rw-p 00000000 00:00 0
01bd9000-043f4000 rw-p 00000000 00:00 0 [heap]
7fbccbde9000-7fbccbdff000 r-xp 00000000 08:01 417 /lib/libgcc_s.so.1
7fbccbdff000-7fbccbffe000 ---p 00016000 08:01 417 /lib/libgcc_s.so.1
7fbccbffe000-7fbccbfff000 r--p 00015000 08:01 417 /lib/libgcc_s.so.1
7fbccbfff000-7fbccc000000 rw-p 00016000 08:01 417 /lib/libgcc_s.so.1
7fbccc000000-7fbccc021000 rw-p 00000000 00:00 0
7fbccc021000-7fbcd0000000 ---p 00000000 00:00 0
7fbcd01e6000-7fbcd01fc000 r-xp 00000000 08:01 136 /lib/libresolv-2.10.1.so
7fbcd01fc000-7fbcd03fb000 ---p 00016000 08:01 136 /lib/libresolv-2.10.1.so
7fbcd03fb000-7fbcd03fc000 r--p 00015000 08:01 136 /lib/libresolv-2.10.1.so
7fbcd03fc000-7fbcd03fd000 rw-p 00016000 08:01 136 /lib/libresolv-2.10.1.so
7fbcd03fd000-7fbcd03ff000 rw-p 00000000 00:00 0
7fbcd03ff000-7fbcd0404000 r-xp 00000000 08:01 129 /lib/libnss_dns-2.10.1.so
7fbcd0404000-7fbcd0603000 ---p 00005000 08:01 129 /lib/libnss_dns-2.10.1.so
7fbcd0603000-7fbcd0604000 r--p 00004000 08:01 129 /lib/libnss_dns-2.10.1.so
7fbcd0604000-7fbcd0605000 rw-p 00005000 08:01 129 /lib/libnss_dns-2.10.1.so
7fbcd0605000-7fbcd0607000 r-xp 00000000 08:01 2647 /lib/libnss_mdns4_minimal.so.2
7fbcd0607000-7fbcd0806000 ---p 00002000 08:01 2647 /lib/libnss_mdns4_minimal.so.2
7fbcd0806000-7fbcd0807000 r--p 00001000 08:01 2647 /lib/libnss_mdns4_minimal.so.2
7fbcd0807000-7fbcd0808000 rw-p 00002000 08:01 2647 /lib/libnss_mdns4_minimal.so.2
7fbcd0808000-7fbcd082a000 r-xp 00000000 08:01 526214 /usr/local/hosting/lib/ruby/gems/1.8/gems/libxml-ruby-1.1.3/lib/libxml_ruby.so
7fbcd082a000-7fbcd0a29000 ---p 00022000 08:01 526214 /usr/local/hosting/lib/ruby/gems/1.8/gems/libxml-ruby-1.1.3/lib/libxml_ruby.so
7fbcd0a29000-7fbcd0a2a000 r--p 00021000 08:01 526214 /usr/local/hosting/lib/ruby/gems/1.8/gems/libxml-ruby-1.1.3/lib/libxml_ruby.so
7fbcd0a2a000-7fbcd0a2b000 rw-p 00022000 08:01 526214 /usr/local/hosting/lib/ruby/gems/1.8/gems/libxml-ruby-1.1.3/lib/libxml_ruby.so
7fbcd0a2b000-7fbcd0a35000 r-xp 00000000 08:01 1185921 /usr/local/hosting/lib/ruby/gems/1.8/gems/hpricot-0.6/lib/i686-linux/hpricot_scan.so
7fbcd0a35000-7fbcd0c34000 ---p 0000a000 08:01 1185921 /usr/local/hosting/lib/ruby/gems/1.8/gems/hpricot-0.6/lib/i686-linux/hpricot_scan.so
7fbcd0c34000-7fbcd0c35000 r--p 00009000 08:01 1185921 /usr/local/hosting/lib/ruby/gems/1.8/gems/hpricot-0.6/lib/i686-linux/hpricot_scan.so
7fbcd0c35000-7fbcd0c36000 rw-p 0000a000 08:01 1185921 /usr/local/hosting/lib/ruby/gems/1.8/gems/hpricot-0.6/lib/i686-linux/hpricot_scan.so
7fbcd0c36000-7fbcd0c6f000 r-xp 00000000 08:01 657224 /usr/local/hosting/lib/ruby/gems/1.8/gems/character-encodings-0.4.1/lib/encoding/character/utf-8/utf8.soAborted

Besides that I had to manually edit the gem and remove the Werror flags because it character-encoding 0.4.1 wouldn't compile with them in. I know it's another gem but I mention it in case it helps. This is the error I got when gem install character-encodings before removing the flags:

[...]
make
gcc -I. -I/usr/local/hosting/lib/ruby/1.8/x86_64-linux -I/usr/local/hosting/lib/ruby/1.8/x86_64-linux -I. -DHAVE_ASSERT_H -DHAVE_LIMITS_H -DHAVE_LOCALE_H -DHAVE_STDBOOL_H -DHAVE_STDDEF_H -DHAVE_STDINT_H -DHAVE_STDIO_H -DHAVE_STDLIB_H -DHAVE_STRING_H -DHAVE_SYS_TYPES_H -DHAVE_WCHAR_H -fPIC -g -Os -fno-strict-aliasing -std=c99 -finline-functions -Wall -Wextra -Wwrite-strings -Waggregate-return -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Wundef -Wpointer-arith -Wcast-align -Werror -Winline -c rb_utf_chop.c
gcc -I. -I/usr/local/hosting/lib/ruby/1.8/x86_64-linux -I/usr/local/hosting/lib/ruby/1.8/x86_64-linux -I. -DHAVE_ASSERT_H -DHAVE_LIMITS_H -DHAVE_LOCALE_H -DHAVE_STDBOOL_H -DHAVE_STDDEF_H -DHAVE_STDINT_H -DHAVE_STDIO_H -DHAVE_STDLIB_H -DHAVE_STRING_H -DHAVE_SYS_TYPES_H -DHAVE_WCHAR_H -fPIC -g -Os -fno-strict-aliasing -std=c99 -finline-functions -Wall -Wextra -Wwrite-strings -Waggregate-return -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Wundef -Wpointer-arith -Wcast-align -Werror -Winline -c rb_utf_each_char.c
gcc -I. -I/usr/local/hosting/lib/ruby/1.8/x86_64-linux -I/usr/local/hosting/lib/ruby/1.8/x86_64-linux -I. -DHAVE_ASSERT_H -DHAVE_LIMITS_H -DHAVE_LOCALE_H -DHAVE_STDBOOL_H -DHAVE_STDDEF_H -DHAVE_STDINT_H -DHAVE_STDIO_H -DHAVE_STDLIB_H -DHAVE_STRING_H -DHAVE_SYS_TYPES_H -DHAVE_WCHAR_H -fPIC -g -Os -fno-strict-aliasing -std=c99 -finline-functions -Wall -Wextra -Wwrite-strings -Waggregate-return -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Wundef -Wpointer-arith -Wcast-align -Werror -Winline -c utf.c
cc1: warnings being treated as errors
utf.c: In function ‘utf_collate_key_impl’:
utf.c:482: error: inlining failed in call to ‘_utf_encode’: optimizing for size and code size would grow
utf.c:530: error: called from here
utf.c:482: error: inlining failed in call to ‘_utf_encode’: optimizing for size and code size would grow
utf.c:535: error: called from here
make: *** [utf.o] Error 1

ubuntu karmic koala

/usr/src# gcc -v
Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.4.1-4ubuntu9' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --disable-werror --with-arch-32=i486 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu9)