Add trailing dots to fortran io fnspecs to match signature

[Richard Biener]

On Tue, 29 Sep 2020, Jan Hubicka wrote:

> > On September 29, 2020 4:20:42 PM GMT+02:00, Jan Hubicka <hubicka@ucw.cz> wrote:
> > >Hi,
> > >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
> > >mistakes in that in trans-decl and one mistake here.
> > >Transfer_derived has additional parameters.
> > 
> > Hmm, omitting trailing dots was on purpose to make the string short (also consider varargs...).  You can still sanity check the prefix, no? 
> 
> Yes, I check the prefix and check that only permitted letters appears on
> given positions.  However it seems there is enough fuzz to justify one
> extra byte or two in the string (it is not very long anyway).
> 
> I only check it in gfc_build infrastructure and allow early ending
> strings otherwise.

Ah, OK.

Fair enough then, thus OK

Richard.

> I do not have very strong opinionshere, but it seems it is easy to shit
> the string by one or miss a middle argument (especially for calls with
> 13 parameters) that is caught by this check.
> 
> I was also consiering teaching fortran to check that R/W is used only
> for pointer type parameters (but did not implement it)
> Honza
> > 
> > >Bootstrapped/regtested x86_64-linux. OK?
> > >Honza
> > >
> > >	* transe-io.c (gfc_build_io_library_fndecls): Add traling "." for
> > >	fnspecs so the match number of parameters.
> > >diff --git a/gcc/fortran/trans-io.c b/gcc/fortran/trans-io.c
> > >index 21bdd5ef0d8..363cca51ef9 100644
> > >--- a/gcc/fortran/trans-io.c
> > >+++ b/gcc/fortran/trans-io.c
> > >@@ -328,86 +328,86 @@ gfc_build_io_library_fndecls (void)
> > >dt_parm_type = build_pointer_type (st_parameter[IOPARM_ptype_dt].type);
> > > 
> > > iocall[IOCALL_X_INTEGER] = gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("transfer_integer")), ".wW",
> > >+	get_identifier (PREFIX("transfer_integer")), ".wW.",
> > >	void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
> > > 
> > >iocall[IOCALL_X_INTEGER_WRITE] =
> > >gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("transfer_integer_write")), ".wR",
> > >+	get_identifier (PREFIX("transfer_integer_write")), ".wR.",
> > >	void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
> > > 
> > > iocall[IOCALL_X_LOGICAL] = gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("transfer_logical")), ".wW",
> > >+	get_identifier (PREFIX("transfer_logical")), ".wW.",
> > >	void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
> > > 
> > >iocall[IOCALL_X_LOGICAL_WRITE] =
> > >gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("transfer_logical_write")), ".wR",
> > >+	get_identifier (PREFIX("transfer_logical_write")), ".wR.",
> > >	void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
> > > 
> > >iocall[IOCALL_X_CHARACTER] = gfc_build_library_function_decl_with_spec
> > >(
> > >-	get_identifier (PREFIX("transfer_character")), ".wW",
> > >+	get_identifier (PREFIX("transfer_character")), ".wW.",
> > >	void_type_node, 3, dt_parm_type, pvoid_type_node,
> > >gfc_charlen_type_node);
> > > 
> > >iocall[IOCALL_X_CHARACTER_WRITE] =
> > >gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("transfer_character_write")), ".wR",
> > >+	get_identifier (PREFIX("transfer_character_write")), ".wR.",
> > >	void_type_node, 3, dt_parm_type, pvoid_type_node,
> > >gfc_charlen_type_node);
> > > 
> > >iocall[IOCALL_X_CHARACTER_WIDE] =
> > >gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("transfer_character_wide")), ".wW",
> > >+	get_identifier (PREFIX("transfer_character_wide")), ".wW..",
> > > 	void_type_node, 4, dt_parm_type, pvoid_type_node,
> > > 	gfc_charlen_type_node, gfc_int4_type_node);
> > > 
> > >   iocall[IOCALL_X_CHARACTER_WIDE_WRITE] =
> > >     gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("transfer_character_wide_write")), ".wR",
> > >+	get_identifier (PREFIX("transfer_character_wide_write")), ".wR..",
> > > 	void_type_node, 4, dt_parm_type, pvoid_type_node,
> > > 	gfc_charlen_type_node, gfc_int4_type_node);
> > > 
> > >   iocall[IOCALL_X_REAL] = gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("transfer_real")), ".wW",
> > >+	get_identifier (PREFIX("transfer_real")), ".wW.",
> > >	void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
> > > 
> > >iocall[IOCALL_X_REAL_WRITE] = gfc_build_library_function_decl_with_spec
> > >(
> > >-	get_identifier (PREFIX("transfer_real_write")), ".wR",
> > >+	get_identifier (PREFIX("transfer_real_write")), ".wR.",
> > >	void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
> > > 
> > > iocall[IOCALL_X_COMPLEX] = gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("transfer_complex")), ".wW",
> > >+	get_identifier (PREFIX("transfer_complex")), ".wW.",
> > >	void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
> > > 
> > >iocall[IOCALL_X_COMPLEX_WRITE] =
> > >gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("transfer_complex_write")), ".wR",
> > >+	get_identifier (PREFIX("transfer_complex_write")), ".wR.",
> > >	void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
> > > 
> > >   /* Version for __float128.  */
> > > iocall[IOCALL_X_REAL128] = gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("transfer_real128")), ".wW",
> > >+	get_identifier (PREFIX("transfer_real128")), ".wW.",
> > >	void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
> > > 
> > >iocall[IOCALL_X_REAL128_WRITE] =
> > >gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("transfer_real128_write")), ".wR",
> > >+	get_identifier (PREFIX("transfer_real128_write")), ".wR.",
> > >	void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
> > > 
> > >iocall[IOCALL_X_COMPLEX128] = gfc_build_library_function_decl_with_spec
> > >(
> > >-	get_identifier (PREFIX("transfer_complex128")), ".wW",
> > >+	get_identifier (PREFIX("transfer_complex128")), ".wW.",
> > >	void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
> > > 
> > >iocall[IOCALL_X_COMPLEX128_WRITE] =
> > >gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("transfer_complex128_write")), ".wR",
> > >+	get_identifier (PREFIX("transfer_complex128_write")), ".wR.",
> > >	void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
> > > 
> > >   iocall[IOCALL_X_ARRAY] = gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("transfer_array")), ".ww",
> > >+	get_identifier (PREFIX("transfer_array")), ".ww..",
> > > 	void_type_node, 4, dt_parm_type, pvoid_type_node,
> > > 	integer_type_node, gfc_charlen_type_node);
> > > 
> > >iocall[IOCALL_X_ARRAY_WRITE] =
> > >gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("transfer_array_write")), ".wr",
> > >+	get_identifier (PREFIX("transfer_array_write")), ".wr..",
> > > 	void_type_node, 4, dt_parm_type, pvoid_type_node,
> > > 	integer_type_node, gfc_charlen_type_node);
> > > 
> > > iocall[IOCALL_X_DERIVED] = gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("transfer_derived")), ".wrR",
> > >-	void_type_node, 2, dt_parm_type, pvoid_type_node, pchar_type_node);
> > >+	get_identifier (PREFIX("transfer_derived")), ".wr",
> > >+	void_type_node, 2, dt_parm_type, pvoid_type_node);
> > > 
> > >   /* Library entry points */
> > > 
> > >@@ -475,18 +475,18 @@ gfc_build_io_library_fndecls (void)
> > > 	void_type_node, 1, dt_parm_type);
> > > 
> > >iocall[IOCALL_SET_NML_VAL] = gfc_build_library_function_decl_with_spec
> > >(
> > >-	get_identifier (PREFIX("st_set_nml_var")), ".w.R",
> > >+	get_identifier (PREFIX("st_set_nml_var")), ".w.R...",
> > > 	void_type_node, 6, dt_parm_type, pvoid_type_node, pvoid_type_node,
> > > 	gfc_int4_type_node, gfc_charlen_type_node, get_dtype_type_node());
> > > 
> > >iocall[IOCALL_SET_NML_DTIO_VAL] =
> > >gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("st_set_nml_dtio_var")), ".w.R",
> > >+	get_identifier (PREFIX("st_set_nml_dtio_var")), ".w.R.....",
> > > 	void_type_node, 8, dt_parm_type, pvoid_type_node, pvoid_type_node,
> > > 	gfc_int4_type_node, gfc_charlen_type_node, get_dtype_type_node(),
> > > 	pvoid_type_node, pvoid_type_node);
> > > 
> > >iocall[IOCALL_SET_NML_VAL_DIM] =
> > >gfc_build_library_function_decl_with_spec (
> > >-	get_identifier (PREFIX("st_set_nml_var_dim")), ".w",
> > >+	get_identifier (PREFIX("st_set_nml_var_dim")), ".w....",
> > > 	void_type_node, 5, dt_parm_type, gfc_int4_type_node,
> > > 	gfc_array_index_type, gfc_array_index_type, gfc_array_index_type);
> > > }
> > 
> 

-- 
Richard Biener <rguenther@suse.de>
SUSE Software Solutions Germany GmbH, Maxfeldstrasse 5, 90409 Nuernberg,
Germany; GF: Felix Imend