https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106546
--- Comment #7 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-13 branch has been updated by Thomas Koenig <[email protected]>: https://gcc.gnu.org/g:9919b2a44ec4a3f6042569637ee6fd784d427fa4 commit r13-10335-g9919b2a44ec4a3f6042569637ee6fd784d427fa4 Author: Thomas Koenig <[email protected]> Date: Wed May 20 22:43:10 2026 +0200 PR fortran/106546 - inline matmul with -fno-automatic There was a problem caused with allocatable arrays used for front-end optimization when -fno-automatic was specified. Solved by explicitly setting the automatic attribute on the symbol. It required "-O2 -fcheck=bounds -fno-automatic" to be seen. gcc/fortran/ChangeLog: PR fortran/106546 * frontend-passes.cc (create_var): Set attr->automatic on new symbol. (create_do_loop): Likewise on iteration variable. gcc/testsuite/ChangeLog: PR fortran/106546 * gfortran.dg/inline_matmul_27.f90: New test. (cherry picked from commit 996673496e9cbc05b6ec55f0ab1324c3ffe4a876)
