Pointer arguments to procedures are broken, unless in the case of simple datataypes. The outcome of this deficiency are the dependent PRs.
Confirmed.
Subject: Bug 17193 CVSROOT: /cvs/gcc Module name: gcc Changes by: pault@gcc.gnu.org 2005-05-29 16:02:11 Modified files: gcc/fortran : trans-array.c trans-expr.c Log message: 2005-05-29 Paul Thomas <pault@gcc.gnu.org> PR fortran/16939 PR fortran/17192 PR fortran/17193 PR fortran/17202 PR fortran/18689 PR fortran/18890 PR fortran/21297 * fortran/trans-array.c (gfc_conv_resolve_dependencies): Add string length to temp_ss for character pointer array assignments. * fortran/trans-expr.c (gfc_conv_variable): Correct errors in dereferencing of characters and character pointers. * fortran/trans-expr.c (gfc_conv_function_call): Provide string length as return argument for various kinds of handling of return. Return a char[]* temporary for character pointer functions and dereference the temporary upon return. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/trans-array.c.diff?cvsroot=gcc&r1=1.45&r2=1.46 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/trans-expr.c.diff?cvsroot=gcc&r1=1.44&r2=1.45
Subject: Bug 17193 CVSROOT: /cvs/gcc Module name: gcc Branch: gcc-4_0-branch Changes by: pault@gcc.gnu.org 2005-06-05 08:59:18 Modified files: gcc/fortran : ChangeLog trans-array.c trans-expr.c Log message: 005-05-31 Paul Thomas <pault@gcc.gnu.org> PR fortran/18109 PR fortran/18283 PR fortran/19107 PR fortran/16939 PR fortran/17192 PR fortran/17193 PR fortran/17202 PR fortran/18689 PR fortran/18890 * fortran/trans-array.c (gfc_conv_expr_descriptor): Obtain the string length from the expression typespec character length value and set temp_ss->stringlength and backend_decl. Obtain the tree expression from gfc_conv_expr rather than gfc_conv_expr_val. Dereference the expression to obtain the character. * fortran/trans-array.c (gfc_conv_resolve_dependencies): Add string length to temp_ss for character pointer array assignments. * fortran/trans-expr.c (gfc_conv_component_ref): Remove the dereference of scalar character pointer structure components. * fortran/trans-expr.c (gfc_trans_subarray_assign): Obtain the string length for the structure component from the component expression. * fortran/trans-expr.c (gfc_conv_variable): Correct errors in dereferencing of characters and character pointers. * fortran/trans-expr.c (gfc_conv_function_call): Provide string length as return argument for various kinds of handling of return. Return a char[]* temporary for character pointer functions and dereference the temporary upon return. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.335.2.66&r2=1.335.2.67 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/trans-array.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.39.2.3&r2=1.39.2.4 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/trans-expr.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.38.2.4&r2=1.38.2.5
Fixed in 4.0 and 4.1