target.c (gomp_load_plugin_for_device): Use const char * instead of char * for…

target.c (gomp_load_plugin_for_device): Use const char * instead of char * for variables holding dlerror return values.

libgomp/

* target.c (gomp_load_plugin_for_device): Use const char * instead of
char * for variables holding dlerror return values.
(DLSYM_OPT): Ditto.

From-SVN: r220789

libgomp/ChangeLog

+2015-02-18  Ilya Tocar  <ilya.tocar@intel.com>
+
+	* target.c (gomp_load_plugin_for_device): Use const char * instead of
+	char * for variables holding dlerror return values.
+	(DLSYM_OPT): Ditto.
+
 2015-02-17  Thomas Schwinge  <thomas@codesourcery.com>
 
 	* libgomp-plugin.c (GOMP_PLUGIN_debug): Fix typo.

libgomp/target.c

@@ -919,7 +919,7 @@ static bool
 gomp_load_plugin_for_device (struct gomp_device_descr *device,
 			     const char *plugin_name)
 {
-  char *err = NULL, *last_missing = NULL;
+  const char *err = NULL, *last_missing = NULL;
   int optional_present, optional_total;
 
   /* Clear any existing error.  */
@@ -947,7 +947,7 @@ gomp_load_plugin_for_device (struct gomp_device_descr *device,
 #define DLSYM_OPT(f, n)						\
   do									\
     {									\
-      char *tmp_err;							\
+      const char *tmp_err;							\
       device->f##_func = dlsym (plugin_handle, "GOMP_OFFLOAD_" #n);	\
       tmp_err = dlerror ();						\
       if (tmp_err == NULL)						\