https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97589
Bug ID: 97589 Summary: Segementation fault when allocating coarrays. Product: gcc Version: coarray_native Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran Assignee: unassigned at gcc dot gnu.org Reporter: toon at moene dot org Target Milestone: --- Created attachment 49446 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49446&action=edit The failing program. I compiled the attached program as follows: ~/compilers/install/coarray_native/bin/gfortran -fbacktrace -fcoarray=shared test-coarrays.f90 -lcaf_shared -lrt -lpthread and ran it: (export LD_LIBRARY_PATH=/home/toon/compilers/install/coarray_native/lib/gcc/x86_64-pc-linux-gnu/11.0.0; export GFORTRAN_NUM_IMAGES=1; echo ' &config / ' | ./a.out) Decomposition information on image 1 : there are 1 * 1 slabs; the slab on this image has 90 * 90 grid cells. Program received signal SIGSEGV: Segmentation fault - invalid memory reference. Backtrace for this error: #0 0x7f4af6b41bd0 in ??? #1 0x7f4af6b40e25 in ??? #2 0x7f4af67efcbf in ??? #3 0x7f4af6916e6d in ??? #4 0x7f4af6e264fb in get_memory_by_id_internal at /home/toon/compilers/coarray_native/libgfortran/nca/alloc.c:73 #5 0x401f70 in ??? #6 0x403a74 in ??? #7 0x7f4af6e26a7f in image_main_wrapper at /home/toon/compilers/coarray_native/libgfortran/nca/coarraynative.c:83 #8 0x403acb in ??? #9 0x7f4af67dacc9 in ??? #10 0x401189 in ??? #11 0xffffffffffffffff in ??? ERROR: Image 1(0x22dbf4) failed