https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77963
Bug ID: 77963 Summary: inconsistent (false?) leaks detection. Product: gcc Version: 6.2.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: sanitizer Assignee: unassigned at gcc dot gnu.org Reporter: pawel_sikora at zoho dot com CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org, jakub at gcc dot gnu.org, kcc at gcc dot gnu.org Target Milestone: --- Created attachment 39800 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39800&action=edit testcase hi, i've observed that running application under gdb/ltrace/strace reports strange memory leaks, e.g: % make g++ -Wall -g2 s.cpp -fsanitize=address -Og -shared -fPIC -o s.so -lboost_thread g++ -Wall -g2 m.cpp -fsanitize=address -Og -o m ./s.so -ldl [pawels@pawels]~/ssd/leaks% ./m; echo $? 0 [pawels@pawels]~/ssd/leaks% ltrace ./m __asan_init(1, 0x7ffddcdce888, 0x7ffddcdce898, 0x7f833ad36540) = 0 __libc_start_main([ "./m" ] <unfinished ...> __asan_init(1, 0x7ffddcdce888, 0x7ffddcdce898, 0) = 0 __asan_version_mismatch_check_v6(1, 0x7ffddcdce888, 0x7ffddcdce898, 0) = 0 __asan_register_globals(0x601080, 2, 0x7ffddcdce898, 0) = 0 dlopen("./s.so", 1) = 0x7f833cbabb18 dlsym(0x7f833cbabb18, "foo") = 0x7f833b7e4d20 dlclose(0x7f833cbabb18) = 0 __asan_unregister_globals(0x601080, 2, 0, 1) = 0x80078140 ================================================================= ==4777==ERROR: LeakSanitizer: detected memory leaks Indirect leak of 440 byte(s) in 1 object(s) allocated from: #0 0x7f833baaeea0 in operator new(unsigned long) (/lib64/libasan.so.3+0xc7ea0) #1 0x7f833a33a83d in boost::detail::make_external_thread_data() (/lib64/libboost_thread.so.1.60.0+0x1283d) Indirect leak of 24 byte(s) in 1 object(s) allocated from: #0 0x7f833baaeea0 in operator new(unsigned long) (/lib64/libasan.so.3+0xc7ea0) #1 0x7f833a33a9e9 in boost::detail::make_external_thread_data() (/lib64/libboost_thread.so.1.60.0+0x129e9) SUMMARY: AddressSanitizer: 464 byte(s) leaked in 2 allocation(s). +++ exited (status 1) +++