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| author | Daniel Franke <franke.daniel@gmail.com> | 2007-12-18 18:39:56 -0500 |
|---|---|---|
| committer | Daniel Franke <dfranke@gcc.gnu.org> | 2007-12-18 18:39:56 -0500 |
| commit | 106dbde4b6239ffcffe1c480780921b0387e858a (patch) | |
| tree | 4a0f5a35f0cffb8801a01fd7818abf666ed82794 /gcc/fortran/expr.c | |
| parent | 520f6c8df8c48a5fd3c15e80e4853d638d28a715 (diff) | |
| download | gcc-106dbde4b6239ffcffe1c480780921b0387e858a.zip gcc-106dbde4b6239ffcffe1c480780921b0387e858a.tar.gz gcc-106dbde4b6239ffcffe1c480780921b0387e858a.tar.bz2 | |
re PR fortran/34495 (accepts invalid initialization expressions withTRANSFER)
gcc/fortran:
2007-12-19 Daniel Franke <franke.daniel@gmail.com>
PR fortran/34495
* expr.c (check_init_expr): Check whether variables with flavor
FL_PARAMETER do have a value assigned. Added error messages where
appropriate.
* simplify.c (gfc_simplify_transfer): Added check if the MOLD
argument is a constant if working with initialization
expressions.
gcc/testsuite:
2007-12-19 Daniel Franke <franke.daniel@gmail.com>
PR fortran/34495
* gfortran.dg/transfer_simplify_2.f90: Fixed invalid initialization
expressions.
* gfortran.dg/transfer_simplify_7.f90: New test.
From-SVN: r131047
Diffstat (limited to 'gcc/fortran/expr.c')
| -rw-r--r-- | gcc/fortran/expr.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/gcc/fortran/expr.c b/gcc/fortran/expr.c index 92ad77e..4e77605 100644 --- a/gcc/fortran/expr.c +++ b/gcc/fortran/expr.c @@ -2202,7 +2202,18 @@ check_init_expr (gfc_expr *e) if (e->symtree->n.sym->attr.flavor == FL_PARAMETER) { - t = simplify_parameter_variable (e, 0); + /* A PARAMETER shall not be used to define itself, i.e. + REAL, PARAMETER :: x = transfer(0, x) + is invalid. */ + if (!e->symtree->n.sym->value) + { + gfc_error("PARAMETER '%s' is used at %L before its definition " + "is complete", e->symtree->n.sym->name, &e->where); + t = FAILURE; + } + else + t = simplify_parameter_variable (e, 0); + break; } @@ -2233,6 +2244,12 @@ check_init_expr (gfc_expr *e) e->symtree->n.sym->name, &e->where); break; + case AS_EXPLICIT: + gfc_error ("Array '%s' at %L is a variable, which does " + "not reduce to a constant expression", + e->symtree->n.sym->name, &e->where); + break; + default: gcc_unreachable(); } |