I've been using protobuf 2.3.0 for several weeks, using SerializeToString. The other day, I switched to using SerializeToOstream, and started seeing the following invalid write and double free errors reported by valgrind when my program is terminated;
==15778== Invalid write of size 4 ==15778== at 0x6623464: google::protobuf::FileDescriptorTables::~FileDescriptorTables() (hashtable:532) ==15778== by 0x4D821BE: __run_exit_handlers (exit.c:78) ==15778== by 0x4D8222E: exit (exit.c:100) ==15778== by 0x4D69BDD: (below main) (libc-start.c:258) ==15778== Address 0x635dc80 is 0 bytes inside a block of size 48 free'd ==15778== at 0x4024851: operator delete(void*) (vg_replace_malloc.c: 387) ==15778== by 0x4D821BE: __run_exit_handlers (exit.c:78) ==15778== by 0x4D8222E: exit (exit.c:100) ==15778== by 0x4D69BDD: (below main) (libc-start.c:258) ==15778== ==15778== Invalid free() / delete / delete[] ==15778== at 0x4024851: operator delete(void*) (vg_replace_malloc.c: 387) ==15778== by 0x4D821BE: __run_exit_handlers (exit.c:78) ==15778== by 0x4D8222E: exit (exit.c:100) ==15778== by 0x4D69BDD: (below main) (libc-start.c:258) ==15778== Address 0x635dc80 is 0 bytes inside a block of size 48 free'd ==15778== at 0x4024851: operator delete(void*) (vg_replace_malloc.c: 387) ==15778== by 0x4D821BE: __run_exit_handlers (exit.c:78) ==15778== by 0x4D8222E: exit (exit.c:100) ==15778== by 0x4D69BDD: (below main) (libc-start.c:258) The above are one example of several reports. it appears there is one set of these for each proto message I have defined. I've tried to recreate this error in a smaller example program for several days without success. Am wondering if anyone on the list has seen this problem, and knows what might cause it? I'm using SerializeToOstream in basically the following manner; char buf[512]; std::stringbuf sbuf; sbuf.pubsetbuf((char*)buf, 512); std::ostream os(&sbuf); message.SerializeToOstream(&os); Any feedback on how to further debug this problem would be appreciated. --CB -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to proto...@googlegroups.com. To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/protobuf?hl=en.
