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| author | Jerry DeLisle <jvdelisle@gcc.gnu.org> | 2007-08-26 22:04:48 +0000 |
|---|---|---|
| committer | Jerry DeLisle <jvdelisle@gcc.gnu.org> | 2007-08-26 22:04:48 +0000 |
| commit | 128997b6a50945943c47b02ca4d743e22e4d4786 (patch) | |
| tree | 179fe2796441d99ba4d1e150090496d54cca0623 /gcc/fortran/trans-io.c | |
| parent | 070b797d0a7c4032bcadf58a0b29a4cc65fd5587 (diff) | |
| download | gcc-128997b6a50945943c47b02ca4d743e22e4d4786.zip gcc-128997b6a50945943c47b02ca4d743e22e4d4786.tar.gz gcc-128997b6a50945943c47b02ca4d743e22e4d4786.tar.bz2 | |
re PR libfortran/33055 (Runtime error in INQUIRE unit existance with -fdefault-integer-8)
2007-08-26 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR fortran/33055
* trans-io.c (create_dummy_iostat): New function to create a unique
dummy variable expression to use with IOSTAT.
(gfc_trans_inquire): Use the new function to pass unit number error info
to run-time library if a regular IOSTAT variable was not given.
PR libfortran/33055
* io/inquire.c (inquire_via_unit): If inquiring by unit, check for
an error condition from the IOSTAT variable and set EXIST to false if
there was a bad unit number.
From-SVN: r127817
Diffstat (limited to 'gcc/fortran/trans-io.c')
| -rw-r--r-- | gcc/fortran/trans-io.c | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/gcc/fortran/trans-io.c b/gcc/fortran/trans-io.c index 80646cd..cd25108 100644 --- a/gcc/fortran/trans-io.c +++ b/gcc/fortran/trans-io.c @@ -1094,6 +1094,30 @@ gfc_trans_flush (gfc_code * code) } +/* Create a dummy iostat variable to catch any error due to bad unit. */ + +static gfc_expr * +create_dummy_iostat (void) +{ + gfc_symtree *st; + gfc_expr *e; + + st = gfc_get_unique_symtree (gfc_current_ns); + st->n.sym = gfc_new_symbol (st->name, gfc_current_ns); + st->n.sym->ts.type = BT_INTEGER; + st->n.sym->ts.kind = 4; + st->n.sym->attr.referenced = 1; + st->n.sym->refs = 1; + e = gfc_get_expr (); + e->expr_type = EXPR_VARIABLE; + e->symtree = st; + e->ts.type = BT_INTEGER; + e->ts.kind = 4; + + return e; +} + + /* Translate the non-IOLENGTH form of an INQUIRE statement. */ tree @@ -1133,8 +1157,17 @@ gfc_trans_inquire (gfc_code * code) p->file); if (p->exist) - mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_exist, - p->exist); + { + mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_exist, + p->exist); + + if (p->unit && !p->iostat) + { + p->iostat = create_dummy_iostat (); + mask |= set_parameter_ref (&block, &post_block, var, + IOPARM_common_iostat, p->iostat); + } + } if (p->opened) mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_opened, |