Description of problem: GDB crashes when debugging C++ programs. Version-Release number of selected component (if applicable): gdb-10.2-3.fc34.x86_64 How reproducible: Always Steps to Reproduce: Compile this code with g++ -g sb.C (using any recent GCC, although the line 221 used below is for Fedora's default compiler, gcc-c++-11.1.1-3.fc34): #include <sstream> #include <stdio.h> int main() { std::istringstream in(" abc"); std::ostringstream out; in >> out.rdbuf(); puts(out.str().c_str()); } Then run: gdb -q -ex start -ex n -ex n -ex step -ex finish -ex step -ex n -ex "br 221" -ex r a.out It crashes: Reading symbols from a.out... Temporary breakpoint 1 at 0x4022f2: file sb.cc, line 6. Starting program: /tmp/a.out Temporary breakpoint 1, main () at sb.cc:6 6 std::istringstream in(" abc"); 7 std::ostringstream out; 8 in >> out.rdbuf(); std::__cxx11::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> >::rdbuf (this=0x7fffffffd400) at /usr/src/debug/gcc-11.1.1-3.fc34.x86_64/obj-x86_64-redhat-linux/x86_64-redhat-linux/libstdc++-v3/include/sstream:908 908 rdbuf() const Run till exit from #0 std::__cxx11::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> >::rdbuf (this=0x7fffffffd400) at /usr/src/debug/gcc-11.1.1-3.fc34.x86_64/obj-x86_64-redhat-linux/x86_64-redhat-linux/libstdc++-v3/include/sstream:908 0x0000000000402364 in main () at sb.cc:8 8 in >> out.rdbuf(); Value returned is $1 = (std::__cxx11::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> >::__stringbuf_type *) 0x7fffffffd408 std::istream::operator>> (this=0x7fffffffd580, __sbout=0x7fffffffd408) at /usr/src/debug/gcc-11.1.1-3.fc34.x86_64/obj-x86_64-redhat-linux/x86_64-redhat-linux/libstdc++-v3/include/bits/istream.tcc:211 211 basic_istream<_CharT, _Traits>:: 734 operator bool() const Breakpoint 2 at 0x7ffff7e3ec40: /usr/src/debug/gcc-11.1.1-3.fc34.x86_64/obj-x86_64-redhat-linux/x86_64-redhat-linux/libstdc++-v3/include/istream:221. (8 locations) The program being debugged has been started already. Start it from the beginning? (y or n) y ../../gdb/gdbtypes.c:5438: internal-error: Unexpected type field location kind: 4 A problem internal to GDB has been detected, further debugging may prove unreliable. Quit this debugging session? (y or n) y This is a bug, please report it. For instructions, see: <https://www.gnu.org/software/gdb/bugs/>. ../../gdb/gdbtypes.c:5438: internal-error: Unexpected type field location kind: 4 A problem internal to GDB has been detected, further debugging may prove unreliable. Create a core file of GDB? (y or n) n
Seeing the same on multiple machines. Possibly related to this (1) bug? 1) https://sourceware.org/bugzilla/show_bug.cgi?id=28030
Yes, that's why it's linked (see above).
(and that bug is an exact copy of my original submission here)
FEDORA-2021-c4ca5ef0d3 has been submitted as an update to Fedora 35. https://bodhi.fedoraproject.org/updates/FEDORA-2021-c4ca5ef0d3
FEDORA-2021-c4ca5ef0d3 has been pushed to the Fedora 35 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-c4ca5ef0d3` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-c4ca5ef0d3 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2021-ac6363ae65 has been submitted as an update to Fedora 33. https://bodhi.fedoraproject.org/updates/FEDORA-2021-ac6363ae65
Thanks!
FEDORA-2021-c4ca5ef0d3 has been pushed to the Fedora 35 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2021-ac6363ae65 has been pushed to the Fedora 33 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-ac6363ae65` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-ac6363ae65 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2021-ac6363ae65 has been pushed to the Fedora 33 stable repository. If problem still persists, please make note of it in this bug report.