https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84428
--- Comment #15 from Vojtech Fried <vfried at opentext dot com> --- I am also getting this error. Our code is a big python extension. I run python3 and use LD_PRELOAD. In our code it throws an exception that would normally be caught. ==23331==AddressSanitizer CHECK failed: ../../../../src/libsanitizer/asan/asan_interceptors.cc:384 "((__interception::real___cxa_throw)) != (0)" (0x0, 0x0) #0 0x7fac411eec02 (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xe9c02) #1 0x7fac4120d595 in __sanitizer::CheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) (/usr/lib/x86_64-linux-gnu/libasan.so.4+0x108595) #2 0x7fac4113d26c in __interceptor___cxa_throw (/usr/lib/x86_64-linux-gnu/libasan.so.4+0x3826c) ...our code... #7 0x7fac33fb573a in _wrap_SharedPtr_APIString_APIString_Dictionary_At /home/vfr01/build/streamserve/docplatform/distribution/ubuntu/Debug/bin/pydocapiPYTHON_wrap.cxx:380961 #8 0x7fac40cad6d4 in PyCFunction_Call ../../Objects/methodobject.c:126 ...python code...