[Bug lto/96969] New: ODR violations do not list the translation unit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96969 Bug ID: 96969 Summary: ODR violations do not list the translation unit Product: gcc Version: 9.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: lto Assignee: unassigned at gcc dot gnu.org Reporter: alan at octopull dot co.uk CC: marxin at gcc dot gnu.org Target Milestone: --- ODR violations can occur in structures defined in headers whose contents depend on the inclusion context. For example: ./include/platform/mir/graphics/egl_extensions.h:164:12: error: type ‘struct PlatformBaseEXT’ violates the C++ One Definition Rule [-Werror=odr] ./include/platform/mir/graphics/egl_extensions.h:164:12: note: a different type is defined in another translation unit ./include/platform/mir/graphics/egl_extensions.h:168:47: note: the first difference of corresponding definitions is field ‘eglGetPlatformDisplay’ ./include/platform/mir/graphics/egl_extensions.h:168:47: note: a field with different name is defined in another translation unit The debug info in the .o should include the name of the "top level" file for the translation unit, even if the path from that file to a specific location in a header isn't stored. Alternatively, the name of the .o file would be helpful. Please add some information to the diagnostic messages that identifies the translation units that cause the ODR violation.
[Bug c++/83372] New: Compiler segfaults
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83372 Bug ID: 83372 Summary: Compiler segfaults Product: gcc Version: 7.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: alan at octopull dot co.uk Target Milestone: --- Created attachment 42839 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42839&action=edit build log including gcc dump g++7.2.0 on Ubuntu Artful AMD64: https://launchpadlibrarian.net/348583139/buildlog_ubuntu-artful-amd64.mir_0.29.0~rc7-g165e6e8886-0ubuntu17.10_BUILDING.txt.gz (Alse seen with g++7.2.1 on Fedora 27 x86_64: https://copr-be.cloud.fedoraproject.org/results/ngompa/mir-prerel-fedora/fedora-27-x86_64/00685833-mir/builder-live.log) Various other compiler versions and architectures built successfully. /builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/src/server/frontend/wayland/wayland_connector.cpp:2275:1: internal compiler error: Segmentation fault } ^ Please submit a full bug report Preprocessed source stored into /tmp/cczHUc1t.out file, please attach this to your bugreport.
[Bug c++/83372] Compiler segfaults
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83372 --- Comment #2 from Alan Griffiths --- Created attachment 42841 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42841&action=edit Preprocessed source So far, I've only seen the error on "builders" where I don't have access (i.e. I've so far failed to reproduce "locally"). The attached preprocessed source comes from adapting the compile command shown in the build log and running that locally. I'm told the error also appears on Fedora 27 32bit builds, but intermittently.
[Bug c++/83372] Compiler segfaults
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83372 Alan Griffiths changed: What|Removed |Added Attachment #42841|0 |1 is obsolete|| --- Comment #4 from Alan Griffiths --- Created attachment 42843 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42843&action=edit Preprocessed source as dumped by a failing build I finally found a way to reproduce (using mock). Updated source from that.
[Bug c++/83372] Compiler segfaults
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83372
--- Comment #5 from Alan Griffiths ---
It isn't clear why, but the problem seems to be provoked by this function:
int mf::WaylandConnector::client_socket_fd() const
{
enum { server, client, size };
int socket_fd[size];
if (socketpair(AF_LOCAL, SOCK_STREAM, 0, socket_fd))
{
BOOST_THROW_EXCEPTION((std::system_error{
errno,
std::system_category(),
"Could not create socket pair"}));
}
if (!wl_client_create(display.get(), socket_fd[server]))
{
BOOST_THROW_EXCEPTION((std::system_error{
errno,
std::system_category(),
"Failed to add server end of socketpair to Wayland display"}));
}
return socket_fd[client];
}
Reworking to have just one throw site avoids the segfault. (But I've not yet
found a simpler example exhibiting the problem.)
[Bug c++/83372] Compiler segfaults
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83372 --- Comment #7 from Alan Griffiths --- cd /builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/x86_64-redhat-linux-gnu/src/server/frontend/wayland && /usr/bin/c++ -DLOG_NDEBUG=1 -DMESA_EGL_NO_X11_HEADERS -DMIR_DRMMODEADDFB_HAS_CONST_SIGNATURE -DMIR_LOG_COMPONENT_FALLBACK=\"mirserver\" -DMIR_SERVER_EGL_OPENGL_API=EGL_OPENGL_ES_API -DMIR_SERVER_EGL_OPENGL_BIT=EGL_OPENGL_ES2_BIT -DMIR_SERVER_GLEXT_H="" -DMIR_SERVER_GL_H="" -DMIR_SERVER_GRAPHICS_PLATFORM_VERSION=\"MIR_GRAPHICS_PLATFORM_0.27\" -DMIR_SERVER_INPUT_PLATFORM_VERSION=\"MIR_INPUT_PLATFORM_0.27\" -DMIR_SERVER_PLATFORM_PATH=\"/usr/lib64/mir/server-platform\" -DMIR_VERSION=\"0.29.0\" -DMIR_VERSION_MAJOR=0 -DMIR_VERSION_MICRO=0 -DMIR_VERSION_MINOR=29 -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/core -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/common -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/cookie -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/src/include/common -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/x86_64-redhat-linux-gnu/src/capnproto -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/x86_64-redhat-linux-gnu/src/protobuf -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/platform -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/client -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/server -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/renderer -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/renderers/gl -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/renderers/sw -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/src/include/platform -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/src/include/client -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/src/include/server -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/src/include/cookie -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic -pthread -g -std=c++14 -Werror -Wall -fno-strict-aliasing -pedantic -Wnon-virtual-dtor -Wextra -fPIC -Wno-psabi -flto -ffat-lto-objects -o CMakeFiles/mirfrontend-wayland.dir/wayland_connector.cpp.o -c /builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/src/server/frontend/wayland/wayland_connector.cpp -v Using built-in specs. Reading specs from /usr/lib/rpm/redhat/redhat-hardened-cc1 COLLECT_GCC=/usr/bin/c++ OFFLOAD_TARGET_NAMES=nvptx-none OFFLOAD_TARGET_DEFAULT=1 Target: x86_64-redhat-linux Configured with: ../configure --enable-bootstrap --enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared --enable-threads=posix --enable-checking=release --enable-multilib --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-gcc-major-version-only --with-linker-hash-style=gnu --enable-plugin --enable-initfini-array --with-isl --enable-libmpx --enable-offload-targets=nvptx-none --without-cuda-driver --enable-gnu-indirect-function --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux Thread model: posix gcc version 7.2.1 20170915 (Red Hat 7.2.1-2) (GCC) COLLECT_GCC_OPTIONS='-D' 'LOG_NDEBUG=1' '-D' 'MESA_EGL_NO_X11_HEADERS' '-D' 'MIR_DRMMODEADDFB_HAS_CONST_SIGNATURE' '-D' 'MIR_LOG_COMPONENT_FALLBACK="mirserver"' '-D' 'MIR_SERVER_EGL_OPENGL_API=EGL_OPENGL_ES_API' '-D' 'MIR_SERVER_EGL_OPENGL_BIT=EGL_OPENGL_ES2_BIT' '-D' 'MIR_SERVER_GLEXT_H=' '-D' 'MIR_SERVER_GL_H=' '-D' 'MIR_SERVER_GRAPHICS_PLATFORM_VERSION="MIR_GRAPHICS_PLATFORM_0.27"' '-D' 'MIR_SERVER_INPUT_PLATFORM_VERSION="MIR_INPUT_PLATFORM_0.27"' '-D' 'MIR_SERVER_PLATFORM_PATH="/usr/lib64/mir/server-platform"' '-D' 'MIR_VERSION="0.29.0"' '-D' 'MIR_VERSION_MAJOR=0' '-D' 'MIR_VERSION_MICRO=0' '-D' 'MIR_VERSION_MINOR=29' '-D' '_FILE_OFFSET_BITS=64' '-D' '_GNU_SOURCE' '-I' '/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/core' '-I' '/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/common' '-I' '/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/cookie' '-I' '/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/src/include/common' '-I' '/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/x86_64-redhat-linux-gnu/src/capnproto' '-I' '/builddir/build/BUILD/mir-5500595
[Bug c++/83372] Compiler segfaults
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83372 --- Comment #10 from Alan Griffiths --- It took me some time and effort to reproduce too. :( Building in my normal development environments showed no problems. And I've yet to reproduce on Ubuntu (although the builders we use fail building for 17.10). The steps I took (on Fedora 27): $ sudo dnf install mock $ sudo usermod -a -G mock $USER $ wget https://copr-be.cloud.fedoraproject.org/results/ngompa/mir-prerel-fedora/fedora-27-x86_64/00685833-mir/mir-0.29~git20171208.1.5500595-0.fc27.1.src.rpm $ mock -r fedora-27-x86_64 mir-0.29~git20171208.1.5500595-0.fc27.1.src.rpm $ mock -r fedora-27-x86_64 --shell # cd /builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/x86_64-redhat-linux-gnu/src/server/frontend/wayland && /usr/bin/c++ -DLOG_NDEBUG=1 -DMESA_EGL_NO_X11_HEADERS -DMIR_DRMMODEADDFB_HAS_CONST_SIGNATURE -DMIR_LOG_COMPONENT_FALLBACK=\"mirserver\" -DMIR_SERVER_EGL_OPENGL_API=EGL_OPENGL_ES_API -DMIR_SERVER_EGL_OPENGL_BIT=EGL_OPENGL_ES2_BIT -DMIR_SERVER_GLEXT_H="" -DMIR_SERVER_GL_H="" -DMIR_SERVER_GRAPHICS_PLATFORM_VERSION=\"MIR_GRAPHICS_PLATFORM_0.27\" -DMIR_SERVER_INPUT_PLATFORM_VERSION=\"MIR_INPUT_PLATFORM_0.27\" -DMIR_SERVER_PLATFORM_PATH=\"/usr/lib64/mir/server-platform\" -DMIR_VERSION=\"0.29.0\" -DMIR_VERSION_MAJOR=0 -DMIR_VERSION_MICRO=0 -DMIR_VERSION_MINOR=29 -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/core -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/common -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/cookie -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/src/include/common -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/x86_64-redhat-linux-gnu/src/capnproto -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/x86_64-redhat-linux-gnu/src/protobuf -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/platform -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/client -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/server -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/renderer -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/renderers/gl -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/include/renderers/sw -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/src/include/platform -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/src/include/client -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/src/include/server -I/builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/src/include/cookie -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic -pthread -g -std=c++14 -Werror -Wall -fno-strict-aliasing -pedantic -Wnon-virtual-dtor -Wextra -fPIC -Wno-psabi -flto -ffat-lto-objects -o CMakeFiles/mirfrontend-wayland.dir/wayland_connector.cpp.o -c /builddir/build/BUILD/mir-5500595810c28c150a3bd9edf19b392c2aeab932/src/server/frontend/wayland/wayland_connector.cpp
