Id3lib SEGFAULT – C / C++ – Fórum – Programujte.com

Zdravim, pisu program za pouziti knihovny id3lib, ale narazil jsem na nejaky problem s pameti, ktery skonci SEGFAULTem... Prohnal jsem to valgrindem, ale ani to mne prilis nenasmerovalo spravnym smerem...

valgrind output:

==14716== Invalid read of size 4

==14716==    at 0x404BEFC: ID3_Frame::GetField(ID3_FieldID) const (in /usr/lib/libid3-3.8.so.3.0.0)

==14716==    by 0x8049BD0: Parse_mask(char const*, char const*, ID3_TagType) (in /home/earlcash/dev/id3fcp/id3fcp)

==14716==    by 0x804967D: main (in /home/earlcash/dev/id3fcp/id3fcp)

==14716==  Address 0x4 is not stack'd, malloc'd or (recently) free'd

==14716==

==14716== Process terminating with default action of signal 11 (SIGSEGV)

==14716==  Access not within mapped region at address 0x4

==14716==    at 0x404BEFC: ID3_Frame::GetField(ID3_FieldID) const (in /usr/lib/libid3-3.8.so.3.0.0)

==14716==    by 0x8049BD0: Parse_mask(char const*, char const*, ID3_TagType) (in /home/earlcash/dev/id3fcp/id3fcp)

==14716==    by 0x804967D: main (in /home/earlcash/dev/id3fcp/id3fcp)

==14716==

==14716== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 21 from 1)

==14716== malloc/free: in use at exit: 775 bytes in 6 blocks.

==14716== malloc/free: 16 allocs, 10 frees, 9,487 bytes allocated.

==14716== For counts of detected errors, rerun with: -v

==14716== searching for pointers to 6 not-freed blocks.

==14716== checked 130,888 bytes.

	while(event[iter].symbol != NULL){

		

		if((match = s_mask.find(event[iter].symbol)) != string::npos){

			file.Find(event[iter].frame_id)->GetField(ID3FN_TEXT)->Get(tag_buff, 255);

			s_mask.replace(match, strlen(event[iter].symbol), tag_buff);

			iter++;

			continue;

		}

		iter++;

	}

A nemůže file.Find(event[iter].frame_id) vracet NULL?