* ext/dl/handle.c (rb_dlhandle_sym) removing unnecessary code. Adding

  documentation and tests for current functionality.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25459 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 8 insertions, 3 deletions

diff --git a/ext/dl/handle.c b/ext/dl/handle.c
index eee0cb26b0..ad1f2210cf 100644
--- a/ext/dl/handle.c
+++ b/ext/dl/handle.c
@@ -205,16 +205,21 @@ rb_dlhandle_to_i(VALUE self)
 
 static VALUE dlhandle_sym(void *handle, const char *symbol);
 
+/*
+ * Document-method: sym
+ * Document-method: []
+ *
+ * call-seq: sym(name)
+ *
+ * Get the address as an Integer for the function named +name+.
+ */
 VALUE
 rb_dlhandle_sym(VALUE self, VALUE sym)
 {
     struct dl_handle *dlhandle;
-    const char *name;
 
     rb_secure(2);
 
-    name = StringValuePtr(sym);
-
     TypedData_Get_Struct(self, struct dl_handle, &dlhandle_data_type, dlhandle);
     if( ! dlhandle->open ){
 	rb_raise(rb_eDLError, "closed handle");