[Bug c++/64202] New: C linkage causes shared library exception address problem on ppc64 (not x86_64)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64202 Bug ID: 64202 Summary: C linkage causes shared library exception address problem on ppc64 (not x86_64) Product: gcc Version: 4.8.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: mjtruog at gmail dot com Created attachment 34203 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34203&action=edit Shared library interface with C linkage This problem was found on the gcc test machine gcc112: $ uname -a Linux gcc2-power8.osuosl.org 3.15.10-201.fc20.ppc64p7 #1 SMP Sun Aug 31 13:31:49 MST 2014 ppc64 ppc64 ppc64 GNU/Linux $ gcc -v -save-temps Using built-in specs. COLLECT_GCC=/usr/bin/gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/ppc64-redhat-linux/4.8.3/lto-wrapper Target: ppc64-redhat-linux Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lto --enable-plugin --enable-initfini-array --enable-java-awt=gtk --disable-dssi --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --enable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --with-isl=/builddir/build/BUILD/gcc-4.8.3-20140624/obj-ppc64-redhat-linux/isl-install --with-cloog=/builddir/build/BUILD/gcc-4.8.3-20140624/obj-ppc64-redhat-linux/cloog-install --enable-secureplt --with-long-double-128 --build=ppc64-redhat-linux Thread model: posix gcc version 4.8.3 20140624 (Red Hat 4.8.3-1) (GCC) The example to replicate the problem is attached.
[Bug c++/64202] C linkage causes shared library exception address problem on ppc64 (not x86_64)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64202 --- Comment #2 from Michael Truog --- Created attachment 34205 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34205&action=edit Main executable compiled as C
[Bug c++/64202] C linkage causes shared library exception address problem on ppc64 (not x86_64)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64202 --- Comment #1 from Michael Truog --- Created attachment 34204 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34204&action=edit shared library implementation compiled as C++
[Bug c++/64202] C linkage causes shared library exception address problem on ppc64 (not x86_64)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64202 --- Comment #3 from Michael Truog --- The commands to compile the minimal example are: g++ -O0 -g -c test_lib.cpp -o test_lib.o g++ -fPIC -DPIC -shared test_lib.o -o libtest.so.0.0.0 gcc -O0 -g -c -o test_main.o test_main.c gcc -o test test_main.o libtest.so.0.0.0 -lstdc++ -Wl,-rpath -Wl,./
[Bug c++/64202] C linkage causes shared library exception address problem on ppc64 (not x86_64)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64202 Michael Truog changed: What|Removed |Added Resolution|INVALID |FIXED --- Comment #7 from Michael Truog --- Thanks, that was it.
[Bug c++/64202] C linkage causes shared library exception address problem on ppc64 (not x86_64)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64202 Michael Truog changed: What|Removed |Added Status|RESOLVED|UNCONFIRMED Resolution|INVALID |--- --- Comment #5 from Michael Truog --- That does not resolve the problem. I have tested it with -fPIC as you have mentioned with the same result. The compilation command lines I have provided are minimal to represent what is being done in autoconf/automake/libtool with a larger project, this is the minimal example based on that.
