can't compile with GCC 4.6

I just cloned the repository and tried to build it and I got a big error from glibc :

$ make
gcc -c -g -O3 -Wall -Werror -Isrc -Ihtml    -c -o src/markdown.o src/markdown.c
gcc -c -g -O3 -Wall -Werror -Isrc -Ihtml    -c -o src/array.o src/array.c
gcc -c -g -O3 -Wall -Werror -Isrc -Ihtml    -c -o src/buffer.o src/buffer.c
gcc -c -g -O3 -Wall -Werror -Isrc -Ihtml    -c -o src/autolink.o src/autolink.c
gcc -c -g -O3 -Wall -Werror -Isrc -Ihtml    -c -o html/html.o html/html.c
gcc -c -g -O3 -Wall -Werror -Isrc -Ihtml    -c -o html/html_smartypants.o html/html_smartypants.c
gcc -g -O3 -Wall -Werror  -shared -Wl src/markdown.o src/array.o src/buffer.o src/autolink.o html/html.o html/html_smartypants.o -o libsundown.so.1
*** glibc detected *** /usr/bin/ld: munmap_chunk(): invalid pointer: 0x0976c6a8 ***
======= Backtrace: =========
/lib/i686/cmov/libc.so.6(+0x6aaa1)[0x401b8aa1]
/lib/i686/cmov/libc.so.6(+0x6bd1e)[0x401b9d1e]
/usr/lib/libbfd-2.21.51-system.20110523.so(objalloc_free+0x2c)[0x400fee0c]
======= Memory map: ========
08048000-080f4000 r-xp 00000000 08:02 623114     /usr/bin/ld.bfd
080f4000-080f5000 rw-p 000ac000 08:02 623114     /usr/bin/ld.bfd
080f5000-080f6000 rw-p 00000000 00:00 0 
09759000-099a5000 rw-p 00000000 00:00 0          [heap]
40000000-4001b000 r-xp 00000000 08:02 799364     /lib/ld-2.13.so
4001b000-4001c000 r--p 0001b000 08:02 799364     /lib/ld-2.13.so
4001c000-4001d000 rw-p 0001c000 08:02 799364     /lib/ld-2.13.so
4001d000-4001e000 r-xp 00000000 00:00 0          [vdso]
4001e000-40024000 rw-p 00000000 00:00 0 
40025000-4002b000 rw-p 00000000 00:00 0 
4003d000-40125000 r-xp 00000000 08:02 620199     /usr/lib/libbfd-2.21.51-system.20110523.so
40125000-40131000 rw-p 000e8000 08:02 620199     /usr/lib/libbfd-2.21.51-system.20110523.so
40131000-40135000 rw-p 00000000 00:00 0 
40135000-40148000 r-xp 00000000 08:02 623183     /usr/lib/libz.so.1.2.3.4
40148000-40149000 rw-p 00013000 08:02 623183     /usr/lib/libz.so.1.2.3.4
40149000-4014a000 rw-p 00000000 00:00 0 
4014a000-4014c000 r-xp 00000000 08:02 945046     /lib/i686/cmov/libdl-2.13.so
4014c000-4014d000 r--p 00001000 08:02 945046     /lib/i686/cmov/libdl-2.13.so
4014d000-4014e000 rw-p 00002000 08:02 945046     /lib/i686/cmov/libdl-2.13.so
4014e000-402a1000 r-xp 00000000 08:02 947994     /lib/i686/cmov/libc-2.13.so
402a1000-402a2000 ---p 00153000 08:02 947994     /lib/i686/cmov/libc-2.13.so
402a2000-402a4000 r--p 00153000 08:02 947994     /lib/i686/cmov/libc-2.13.so
402a4000-402a5000 rw-p 00155000 08:02 947994     /lib/i686/cmov/libc-2.13.so
402a5000-402a9000 rw-p 00000000 00:00 0 
402c6000-402e2000 r-xp 00000000 08:02 798166     /lib/libgcc_s.so.1
402e2000-402e3000 rw-p 0001b000 08:02 798166     /lib/libgcc_s.so.1
bfe2a000-bfe4b000 rw-p 00000000 00:00 0          [stack]
collect2: ld terminated with signal 6 [Abandon]
make: *** [libsundown.so.1] Erreur 1

Here is the version of gcc :

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/i486-linux-gnu/4.6.1/lto-wrapper
Target: i486-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.6.0-10' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++,go --prefix=/usr --program-suffix=-4.6 --enable-shared --enable-multiarch --with-multiarch-defaults=i386-linux-gnu --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6 --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-plugin --enable-objc-gc --enable-targets=all --with-arch-32=i586 --with-tune=generic --enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu --target=i486-linux-gnu
Thread model: posix
gcc version 4.6.1 20110526 (prerelease) (Debian 4.6.0-10)

I tried with gcc 4.5 and it compiles successfully (make CC=gcc-4.5).

It seems like newer gcc are able to catch some errors.

vmg / sundown

can't compile with GCC 4.6 #47