http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60392
Bug ID: 60392 Summary: Problem with TRANSPOSE and CONTIGUOUS dummy arguments Product: gcc Version: 4.8.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran Assignee: unassigned at gcc dot gnu.org Reporter: a.vogt at fulguritus dot com When I use the TRANSPOSE intrinsic for function calls where the CONTIGUOUS statement is set I get wrong results. In the attached sample code I have two subroutines that multiply a 3x3 matrix with another one. One subroutine has the contiguous attribute set for the input, the other one does not. Using gfortran, I get a different result from both calls when the TRANSPOSE intrinsic is used: Normal: 0.0000000000000000 Transposed: 6.9428321395983108 Ifort (14.0.1) shows no deviations. I am using gfortran -v Using built-in specs. COLLECT_GCC=gfortran COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/lto-wrapper Target: x86_64-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-4.8.2-20131212/obj-x86_64-redhat-linux/isl-install --with-cloog=/builddir/build/BUILD/gcc-4.8.2-20131212/obj-x86_64-redhat-linux/cloog-install --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux Thread model: posix gcc version 4.8.2 20131212 (Red Hat 4.8.2-7) (GCC)