Strange memory issues on older glibC

[mickymuis]

Compiling using `make static' and building the examples in the examples folder, running a random example gives me:

$ ./get_title_high_level ~/Downloads/repo_test/index.html.11.135.html
get_title_high_level: malloc.c:2451: sYSMALLOc: Assertion `(old_top == (((mbinptr) (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct malloc_chunk, fd)))) && old_size == 0) || ((unsigned long) (old_size) >= (unsigned long)((((__builtin_offsetof (struct malloc_chunk, fd_nextsize))+((2 * (sizeof(size_t))) - 1)) & ~((2 * (sizeof(size_t))) - 1))) && ((old_top)->size & 0x1) && ((unsigned long)old_end & pagemask) == 0)' failed.
Aborted (core dumped)

If I run valgrind I get

==31921== Invalid write of size 8
==31921== at 0x4E3BD70: pthread_mutex_init (pthread_mutex_init.c:83)
==31921== by 0x416A9A: mcsync_mutex_init (in /vol/home/s1407937/myhtml/bin/myhtml/get_title_high_level)
==31921== by 0x41B2AA: mcsync_init (in /vol/home/s1407937/myhtml/bin/myhtml/get_title_high_level)
==31921== by 0x41A7E8: mcobject_async_init (in /vol/home/s1407937/myhtml/bin/myhtml/get_title_high_level)
==31921== by 0x40C8C9: myhtml_token_create (in /vol/home/s1407937/myhtml/bin/myhtml/get_title_high_level)
==31921== by 0x415A38: myhtml_tree_init (in /vol/home/s1407937/myhtml/bin/myhtml/get_title_high_level)
==31921== by 0x40539D: main (in /vol/home/s1407937/myhtml/bin/myhtml/get_title_high_level)
==31921== Address 0x541f890 is 12 bytes after a block of size 4 alloc'd
==31921== at 0x4C29DB4: calloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==31921== by 0x41B29A: mcsync_init (in /vol/home/s1407937/myhtml/bin/myhtml/get_title_high_level)
==31921== by 0x41A7E8: mcobject_async_init (in /vol/home/s1407937/myhtml/bin/myhtml/get_title_high_level)
==31921== by 0x40C8C9: myhtml_token_create (in /vol/home/s1407937/myhtml/bin/myhtml/get_title_high_level)
==31921== by 0x415A38: myhtml_tree_init (in /vol/home/s1407937/myhtml/bin/myhtml/get_title_high_level)
==31921== by 0x40539D: main (in /vol/home/s1407937/myhtml/bin/myhtml/get_title_high_level)
==31921==

And then aprox. 200 more errors.
This is on an old GLIBC (2.15) and GCC (4.6.3) on Ubuntu 12.04. I have not encountered this on other glibc versions. The compilation itself presents no problems whatsoever.

[lexborisov]

Hi @mickymuis
Thanks for report. I fix it soon. Try build library without threads:

make MyCORE_BUILD_WITHOUT_THREADS=YES

[lexborisov]

@mickymuis thanks!
Fixed!

[mickymuis]

Thank you for the quick response!

[lexborisov]

You are welcome!