From patchwork Tue Dec  4 11:22:20 2012
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Subject: [Fortran] PR55343 - Fix ICE with renaming of symbols of intrinsic
 modules
Date: Tue, 04 Dec 2012 01:22:20 -0000
From: Tobias Burnus <burnus@net-b.de>
X-Patchwork-Id: 203611
Message-Id: <50BDDCEC.2040403@net-b.de>
To: gcc patches <gcc-patches@gcc.gnu.org>, gfortran <fortran@gcc.gnu.org>

We freed the renamed symbol for intrinsic modules too early, if they 
actually exist on the disk as the name is used in trans*.c. (For "file" 
modules, the data is later freed with the namespace by calling 
gfc_free_use_stmts.)

Build and regtested on x86-64-gnu-linux.
OK for the trunk?

Tobias


2012-12-04  Tobias Burnus  <burnus@net-b.de>

	PR fortran/55343
	* module.c (gfc_use_module): Free rename list only for
	internally generated intrinsic modules.

2012-12-04  Tobias Burnus  <burnus@net-b.de>

	PR fortran/55343
	* gfortran.dg/gomp/use_intrinsic_1.f90: New.

diff --git a/gcc/fortran/module.c b/gcc/fortran/module.c
index 16ea97b..cde5739 100644
--- a/gcc/fortran/module.c
+++ b/gcc/fortran/module.c
@@ -6157,6 +6157,8 @@ gfc_use_module (gfc_use_list *module)
 			     "intrinsic module at %C") != FAILURE)
        {
 	 use_iso_fortran_env_module ();
+	 free_rename (module->rename);
+	 module->rename = NULL;
 	 gfc_current_locus = old_locus;
 	 module->intrinsic = true;
 	 return;
@@ -6167,6 +6169,8 @@ gfc_use_module (gfc_use_list *module)
 			     "ISO_C_BINDING module at %C") != FAILURE)
 	{
 	  import_iso_c_binding_module();
+	  free_rename (module->rename);
+	  module->rename = NULL;
 	  gfc_current_locus = old_locus;
 	  module->intrinsic = true;
 	  return;
@@ -6359,8 +6363,6 @@ gfc_use_modules (void)
       next = module_list->next;
       rename_list_remove_duplicate (module_list->rename);
       gfc_use_module (module_list);
-      if (module_list->intrinsic)
-	free_rename (module_list->rename);
       free (module_list);
     }
   gfc_rename_list = NULL;
diff --git a/gcc/testsuite/gfortran.dg/gomp/use_intrinsic_1.f90 b/gcc/testsuite/gfortran.dg/gomp/use_intrinsic_1.f90
new file mode 100644
index 0000000..cab3526
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/gomp/use_intrinsic_1.f90
@@ -0,0 +1,11 @@
+! { dg-do compile }
+!
+! PR fortran/55343
+!
+! Contributed by Erik Toussaint
+!
+
+use, intrinsic :: omp_lib, only: omp_get_num_threads
+use, intrinsic :: omp_lib_kinds , foo => omp_lock_kind
+print *, foo
+end