https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103390
--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Sandra Loosemore <san...@gcc.gnu.org>: https://gcc.gnu.org/g:6447f6f983ffeaecb8753ef685d702bf2594968b commit r12-6191-g6447f6f983ffeaecb8753ef685d702bf2594968b Author: Sandra Loosemore <san...@codesourcery.com> Date: Mon Jan 3 08:47:38 2022 -0800 Fortran: Fix array copy-in/copy-out for BIND(C) functions [PR103390] The Fortran front end was generating invalid code for the array copy-out after a call to a BIND(C) function for a dummy with the CONTIGUOUS attribute when the actual argument was a call to the SHAPE intrinsic or other array expressions that are not lvalues. It was also generating code to evaluate the argument expression multiple times on copy-in. This patch teaches it to recognize that a copy is not needed in these cases. 2022-01-03 Sandra Loosemore <san...@codesourcery.com> PR fortran/103390 gcc/fortran/ * expr.c (gfc_is_simply_contiguous): Make it smarter about function calls. * trans-expr.c (gfc_conv_gfc_desc_to_cfi_desc): Do not generate copy loops for array expressions that are not "variables" (lvalues). gcc/testsuite/ * gfortran.dg/c-interop/pr103390-1.f90: New. * gfortran.dg/c-interop/pr103390-2.f90: New. * gfortran.dg/c-interop/pr103390-3.f90: New. * gfortran.dg/c-interop/pr103390-4.f90: New. * gfortran.dg/c-interop/pr103390-6.f90: New. * gfortran.dg/c-interop/pr103390-7.f90: New. * gfortran.dg/c-interop/pr103390-8.f90: New. * gfortran.dg/c-interop/pr103390-9.f90: New.
