> On 9/29/20 4:20 PM, Jan Hubicka wrote:
> > this patch is not needed but makes it possible to sanity check that
> > fnspec match function signature. It turns out that there are quite few
> 
> I'm sending the run-time sanity check patch and few more places that assert.
> I'm going to test the patch.
> 
> Martin

> From 3b1ff799c08f6e7adb3eb6fb988599197c639ec0 Mon Sep 17 00:00:00 2001
> From: Martin Liska <mli...@suse.cz>
> Date: Tue, 29 Sep 2020 16:35:12 +0200
> Subject: [PATCH] Add trailing dots to
>  gfc_build_library_function_decl_with_spec.
> 
> gcc/fortran/ChangeLog:
> 
>       * trans-decl.c (gfc_build_library_function_decl_with_spec): Add
>       runtime assert about length of SPEC argument.
>       (gfc_build_intrinsic_function_decls): Add trailing dots.
>       (gfc_build_builtin_function_decls): Likewise.

My fixup is longer :)
All strings starting with R or W are wrong.  However I have instances of
miamatched lengths say for caf_register, deregister and others.
There are few cases where i dropped the sting
Such as for caf_sendget_by_ref since I was unable to make sense of it.

Honza
diff --git a/gcc/fortran/trans-decl.c b/gcc/fortran/trans-decl.c
index 92242771dde..8a5537432be 100644
--- a/gcc/fortran/trans-decl.c
+++ b/gcc/fortran/trans-decl.c
@@ -3484,16 +3493,16 @@ gfc_build_intrinsic_function_decls (void)
   /* Misc. functions.  */
 
   gfor_fndecl_ttynam = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("ttynam")), ".W",
+       get_identifier (PREFIX("ttynam")), ".W..",
        void_type_node, 3, pchar_type_node, gfc_charlen_type_node,
        integer_type_node);
 
   gfor_fndecl_fdate = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("fdate")), ".W",
+       get_identifier (PREFIX("fdate")), ".W.",
        void_type_node, 2, pchar_type_node, gfc_charlen_type_node);
 
   gfor_fndecl_ctime = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("ctime")), ".W",
+       get_identifier (PREFIX("ctime")), ".W..",
        void_type_node, 3, pchar_type_node, gfc_charlen_type_node,
        gfc_int8_type_node);
 
@@ -3514,8 +3523,8 @@ gfc_build_intrinsic_function_decls (void)
   DECL_PURE_P (gfor_fndecl_si_kind) = 1;
   TREE_NOTHROW (gfor_fndecl_si_kind) = 1;
 
-  gfor_fndecl_sr_kind = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("selected_real_kind2008")), ".RR",
+  gfor_fndecl_sr_kind = gfc_build_library_function_decl (
+       get_identifier (PREFIX("selected_real_kind2008")), 
        gfc_int4_type_node, 3, pvoid_type_node, pvoid_type_node,
        pvoid_type_node);
   DECL_PURE_P (gfor_fndecl_sr_kind) = 1;
@@ -3662,7 +3671,7 @@ gfc_build_intrinsic_function_decls (void)
   TREE_NOTHROW (gfor_fndecl_size0) = 1;
 
   gfor_fndecl_size1 = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("size1")), ".R",
+       get_identifier (PREFIX("size1")), ".R.",
        gfc_array_index_type, 2, pvoid_type_node, gfc_array_index_type);
   DECL_PURE_P (gfor_fndecl_size1) = 1;
   TREE_NOTHROW (gfor_fndecl_size1) = 1;
@@ -3701,7 +3710,7 @@ gfc_build_builtin_function_decls (void)
   TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1;
 
   gfor_fndecl_stop_string = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("stop_string")), ".R.",
+       get_identifier (PREFIX("stop_string")), ".R..",
        void_type_node, 3, pchar_type_node, size_type_node,
        boolean_type_node);
   /* STOP doesn't return.  */
@@ -3714,7 +3723,7 @@ gfc_build_builtin_function_decls (void)
   TREE_THIS_VOLATILE (gfor_fndecl_error_stop_numeric) = 1;
 
   gfor_fndecl_error_stop_string = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("error_stop_string")), ".R.",
+       get_identifier (PREFIX("error_stop_string")), ".R..",
        void_type_node, 3, pchar_type_node, size_type_node,
        boolean_type_node);
   /* ERROR STOP doesn't return.  */
@@ -3841,50 +3850,50 @@ gfc_build_builtin_function_decls (void)
        get_identifier (PREFIX("caf_num_images")), integer_type_node,
        2, integer_type_node, integer_type_node);
 
-      gfor_fndecl_caf_register = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_register")), "RRWWWWR", void_type_node, 7,
+      gfor_fndecl_caf_register = gfc_build_library_function_decl (
+       get_identifier (PREFIX("caf_register")), void_type_node, 7,
        size_type_node, integer_type_node, ppvoid_type_node, pvoid_type_node,
        pint_type, pchar_type_node, size_type_node);
 
       gfor_fndecl_caf_deregister = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_deregister")), "WRWWR", void_type_node, 5,
+       get_identifier (PREFIX("caf_deregister")), ".W.WW.", void_type_node, 5,
        ppvoid_type_node, integer_type_node, pint_type, pchar_type_node,
        size_type_node);
 
-      gfor_fndecl_caf_get = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_get")), ".R.RRWRRRW", void_type_node, 10,
+      gfor_fndecl_caf_get = gfc_build_library_function_decl (
+       get_identifier (PREFIX("caf_get")), void_type_node, 10,
        pvoid_type_node, size_type_node, integer_type_node, pvoid_type_node,
        pvoid_type_node, pvoid_type_node, integer_type_node, integer_type_node,
        boolean_type_node, pint_type);
 
-      gfor_fndecl_caf_send = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_send")), ".R.RRRRRRWR", void_type_node, 11,
+      gfor_fndecl_caf_send = gfc_build_library_function_decl (
+       get_identifier (PREFIX("caf_send")), void_type_node, 11,
        pvoid_type_node, size_type_node, integer_type_node, pvoid_type_node,
        pvoid_type_node, pvoid_type_node, integer_type_node, integer_type_node,
        boolean_type_node, pint_type, pvoid_type_node);
 
-      gfor_fndecl_caf_sendget = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_sendget")), ".R.RRRR.RRRRRR",
+      gfor_fndecl_caf_sendget = gfc_build_library_function_decl (
+       get_identifier (PREFIX("caf_sendget")),
        void_type_node, 14, pvoid_type_node, size_type_node, integer_type_node,
        pvoid_type_node, pvoid_type_node, pvoid_type_node, size_type_node,
        integer_type_node, pvoid_type_node, pvoid_type_node, integer_type_node,
        integer_type_node, boolean_type_node, integer_type_node);
 
-      gfor_fndecl_caf_get_by_ref = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_get_by_ref")), ".RWRRRRRWR", void_type_node,
+      gfor_fndecl_caf_get_by_ref = gfc_build_library_function_decl (
+       get_identifier (PREFIX("caf_get_by_ref")), void_type_node,
        10, pvoid_type_node, integer_type_node, pvoid_type_node,
        pvoid_type_node, integer_type_node, integer_type_node,
        boolean_type_node, boolean_type_node, pint_type, integer_type_node);
 
-      gfor_fndecl_caf_send_by_ref = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_send_by_ref")), ".RRRRRRRWR",
+      gfor_fndecl_caf_send_by_ref = gfc_build_library_function_decl (
+       get_identifier (PREFIX("caf_send_by_ref")),
        void_type_node, 10, pvoid_type_node, integer_type_node, pvoid_type_node,
        pvoid_type_node, integer_type_node, integer_type_node,
        boolean_type_node, boolean_type_node, pint_type, integer_type_node);
 
       gfor_fndecl_caf_sendget_by_ref
-         = gfc_build_library_function_decl_with_spec (
-           get_identifier (PREFIX("caf_sendget_by_ref")), ".RR.RRRRRWWRR",
+         = gfc_build_library_function_decl (
+           get_identifier (PREFIX("caf_sendget_by_ref")),
            void_type_node, 13, pvoid_type_node, integer_type_node,
            pvoid_type_node, pvoid_type_node, integer_type_node,
            pvoid_type_node, integer_type_node, integer_type_node,
@@ -3892,15 +3901,15 @@ gfc_build_builtin_function_decls (void)
            integer_type_node);
 
       gfor_fndecl_caf_sync_all = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_sync_all")), ".WW", void_type_node,
+       get_identifier (PREFIX("caf_sync_all")), ".WW.", void_type_node,
        3, pint_type, pchar_type_node, size_type_node);
 
       gfor_fndecl_caf_sync_memory = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_sync_memory")), ".WW", void_type_node,
+       get_identifier (PREFIX("caf_sync_memory")), ".WW.", void_type_node,
        3, pint_type, pchar_type_node, size_type_node);
 
       gfor_fndecl_caf_sync_images = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_sync_images")), ".RRWW", void_type_node,
+       get_identifier (PREFIX("caf_sync_images")), "..RRW.", void_type_node,
        5, integer_type_node, pint_type, pint_type,
        pchar_type_node, size_type_node);
 
@@ -3916,8 +3925,8 @@ gfc_build_builtin_function_decls (void)
       /* CAF's ERROR STOP doesn't return.  */
       TREE_THIS_VOLATILE (gfor_fndecl_caf_error_stop_str) = 1;
 
-      gfor_fndecl_caf_stop_numeric = gfc_build_library_function_decl_with_spec 
(
-       get_identifier (PREFIX("caf_stop_numeric")), ".R.",
+      gfor_fndecl_caf_stop_numeric = gfc_build_library_function_decl (
+       get_identifier (PREFIX("caf_stop_numeric")), 
        void_type_node, 1, integer_type_node);
       /* CAF's STOP doesn't return.  */
       TREE_THIS_VOLATILE (gfor_fndecl_caf_stop_numeric) = 1;
@@ -3929,49 +3938,49 @@ gfc_build_builtin_function_decls (void)
       TREE_THIS_VOLATILE (gfor_fndecl_caf_stop_str) = 1;
 
       gfor_fndecl_caf_atomic_def = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_atomic_define")), "R..RW",
+       get_identifier (PREFIX("caf_atomic_define")), ".R..RW..",
        void_type_node, 7, pvoid_type_node, size_type_node, integer_type_node,
        pvoid_type_node, pint_type, integer_type_node, integer_type_node);
 
       gfor_fndecl_caf_atomic_ref = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_atomic_ref")), "R..WW",
+       get_identifier (PREFIX("caf_atomic_ref")), ".R..WW..",
        void_type_node, 7, pvoid_type_node, size_type_node, integer_type_node,
        pvoid_type_node, pint_type, integer_type_node, integer_type_node);
 
       gfor_fndecl_caf_atomic_cas = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_atomic_cas")), "R..WRRW",
+       get_identifier (PREFIX("caf_atomic_cas")), ".R..WRRW..",
        void_type_node, 9, pvoid_type_node, size_type_node, integer_type_node,
        pvoid_type_node, pvoid_type_node, pvoid_type_node, pint_type,
        integer_type_node, integer_type_node);
 
       gfor_fndecl_caf_atomic_op = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_atomic_op")), ".R..RWW",
+       get_identifier (PREFIX("caf_atomic_op")), "..R..RWW..",
        void_type_node, 9, integer_type_node, pvoid_type_node, size_type_node,
        integer_type_node, pvoid_type_node, pvoid_type_node, pint_type,
        integer_type_node, integer_type_node);
 
       gfor_fndecl_caf_lock = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_lock")), "R..WWW",
+       get_identifier (PREFIX("caf_lock")), ".R..WWW.",
        void_type_node, 7, pvoid_type_node, size_type_node, integer_type_node,
        pint_type, pint_type, pchar_type_node, size_type_node);
 
       gfor_fndecl_caf_unlock = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_unlock")), "R..WW",
+       get_identifier (PREFIX("caf_unlock")), ".R..WW.",
        void_type_node, 6, pvoid_type_node, size_type_node, integer_type_node,
        pint_type, pchar_type_node, size_type_node);
 
       gfor_fndecl_caf_event_post = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_event_post")), "R..WW",
+       get_identifier (PREFIX("caf_event_post")), ".R..WW.",
        void_type_node, 6, pvoid_type_node, size_type_node, integer_type_node,
        pint_type, pchar_type_node, size_type_node);
 
       gfor_fndecl_caf_event_wait = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_event_wait")), "R..WW",
+       get_identifier (PREFIX("caf_event_wait")), ".R..WW.",
        void_type_node, 6, pvoid_type_node, size_type_node, integer_type_node,
        pint_type, pchar_type_node, size_type_node);
 
       gfor_fndecl_caf_event_query = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_event_query")), "R..WW",
+       get_identifier (PREFIX("caf_event_query")), ".R..WW",
        void_type_node, 5, pvoid_type_node, size_type_node, integer_type_node,
        pint_type, pint_type);
 
@@ -3982,19 +3991,19 @@ gfc_build_builtin_function_decls (void)
 
       gfor_fndecl_caf_failed_images
        = gfc_build_library_function_decl_with_spec (
-           get_identifier (PREFIX("caf_failed_images")), "WRR",
+           get_identifier (PREFIX("caf_failed_images")), ".WR.",
            void_type_node, 3, pvoid_type_node, ppvoid_type_node,
            integer_type_node);
 
       gfor_fndecl_caf_form_team
        = gfc_build_library_function_decl_with_spec (
-           get_identifier (PREFIX("caf_form_team")), "RWR",
+           get_identifier (PREFIX("caf_form_team")), ".RW.",
            void_type_node, 3, integer_type_node, ppvoid_type_node,
            integer_type_node);
 
       gfor_fndecl_caf_change_team
        = gfc_build_library_function_decl_with_spec (
-           get_identifier (PREFIX("caf_change_team")), "RR",
+           get_identifier (PREFIX("caf_change_team")), ".R.",
            void_type_node, 2, ppvoid_type_node,
            integer_type_node);
 
@@ -4003,49 +4012,49 @@ gfc_build_builtin_function_decls (void)
            get_identifier (PREFIX("caf_end_team")), void_type_node, 0);
 
       gfor_fndecl_caf_get_team
-       = gfc_build_library_function_decl_with_spec (
-           get_identifier (PREFIX("caf_get_team")), "R",
+       = gfc_build_library_function_decl (
+           get_identifier (PREFIX("caf_get_team")),
            void_type_node, 1, integer_type_node);
 
       gfor_fndecl_caf_sync_team
        = gfc_build_library_function_decl_with_spec (
-           get_identifier (PREFIX("caf_sync_team")), "RR",
+           get_identifier (PREFIX("caf_sync_team")), ".R.",
            void_type_node, 2, ppvoid_type_node,
            integer_type_node);
 
       gfor_fndecl_caf_team_number
-       = gfc_build_library_function_decl_with_spec (
-           get_identifier (PREFIX("caf_team_number")), "R",
+       = gfc_build_library_function_decl (
+           get_identifier (PREFIX("caf_team_number")), 
            integer_type_node, 1, integer_type_node);
 
       gfor_fndecl_caf_image_status
        = gfc_build_library_function_decl_with_spec (
-           get_identifier (PREFIX("caf_image_status")), "RR",
+           get_identifier (PREFIX("caf_image_status")), "..R",
            integer_type_node, 2, integer_type_node, ppvoid_type_node);
 
       gfor_fndecl_caf_stopped_images
        = gfc_build_library_function_decl_with_spec (
-           get_identifier (PREFIX("caf_stopped_images")), "WRR",
+           get_identifier (PREFIX("caf_stopped_images")), ".WR.",
            void_type_node, 3, pvoid_type_node, ppvoid_type_node,
            integer_type_node);
 
       gfor_fndecl_co_broadcast = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_co_broadcast")), "W.WW",
+       get_identifier (PREFIX("caf_co_broadcast")), ".W.WW.",
        void_type_node, 5, pvoid_type_node, integer_type_node,
        pint_type, pchar_type_node, size_type_node);
 
       gfor_fndecl_co_max = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_co_max")), "W.WW",
+       get_identifier (PREFIX("caf_co_max")), ".W.WW..",
        void_type_node, 6, pvoid_type_node, integer_type_node,
        pint_type, pchar_type_node, integer_type_node, size_type_node);
 
       gfor_fndecl_co_min = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_co_min")), "W.WW",
+       get_identifier (PREFIX("caf_co_min")), ".W.WW..",
        void_type_node, 6, pvoid_type_node, integer_type_node,
        pint_type, pchar_type_node, integer_type_node, size_type_node);
 
       gfor_fndecl_co_reduce = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_co_reduce")), "W.R.WW",
+       get_identifier (PREFIX("caf_co_reduce")), ".W.R.WW..",
        void_type_node, 8, pvoid_type_node,
        build_pointer_type (build_varargs_function_type_list (void_type_node,
                                                              NULL_TREE)),
@@ -4053,12 +4062,12 @@ gfc_build_builtin_function_decls (void)
        integer_type_node, size_type_node);
 
       gfor_fndecl_co_sum = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_co_sum")), "W.WW",
+       get_identifier (PREFIX("caf_co_sum")), ".W.WW.",
        void_type_node, 5, pvoid_type_node, integer_type_node,
        pint_type, pchar_type_node, size_type_node);
 
       gfor_fndecl_caf_is_present = gfc_build_library_function_decl_with_spec (
-       get_identifier (PREFIX("caf_is_present")), "RRR",
+       get_identifier (PREFIX("caf_is_present")), ".R.R",
        integer_type_node, 3, pvoid_type_node, integer_type_node,
        pvoid_type_node);
     }

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