https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84657
Bug ID: 84657 Summary: Wrong exception type matched in catch clause when compiled with address sanitizer Product: gcc Version: 7.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: mikezackles at gmail dot com Target Milestone: --- Created attachment 43538 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43538&action=edit preprocessed See below for minimal reproduction. Thanks! $ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared --enable-threads=posix --enable-libmpx --with-system-zlib --with-isl --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-lto --enable-plugin --enable-install-libiberty --with-linker-hash-style=gnu --enable-gnu-indirect-function --enable-multilib --disable-werror --enable-checking=release --enable-default-pie --enable-default-ssp Thread model: posix gcc version 7.3.0 (GCC) $ cat main.cpp #include <iostream> #include <stdexcept> namespace { int thisThrows() { throw std::runtime_error( "This shouldn't be caught" ); return 1; } struct SomeRandomType {}; } int main() { try { static_cast<void>(thisThrows()); } catch( SomeRandomType& ) { std::cout << "This shouldn't happen!" << std::endl; } } $ g++ -fsanitize=address -fno-omit-frame-pointer -O0 -g main.cpp && ./a.out This shouldn't happen! $ g++ -O0 -g main.cpp && ./a.out terminate called after throwing an instance of 'std::runtime_error' what(): This shouldn't be caught Aborted (core dumped) $ clang++ -fsanitize=address -fno-omit-frame-pointer -O0 -g main.cpp && ./a.out terminate called after throwing an instance of 'std::runtime_error' what(): This shouldn't be caught Aborted (core dumped) $ clang++ --version clang version 5.0.1 (tags/RELEASE_501/final) $ cat /etc/os-release NAME="Arch Linux" Note that I have tried this with gcc trunk on my system and the issue does not occur. This is similar to bug 78651. See also https://github.com/google/sanitizers/issues/919