naruse	2011-07-22 21:49:11 +0900 (Fri, 22 Jul 2011)

  New Revision: 32624

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=32624

  Log:
    merge revision(s) 32590:
    ------------------------------------------------------------------------
    r32590 | naruse | 2011-07-21 00:20:14 +0900 (Thu, 21 Jul 2011) | 7 lines
    
    Add test for r32586.
    
    FreeBSD (at least 7.2 to 7.2) calls nsdispatch(3) when it calls
    getaddrinfo(3). And nsdispatch(3) doesn't call dlerror(3) even if
    it calls _nss_cache_cycle_prevention_function with dlsym(3).
    So our DL::Handle#sym must call dlerror(3) before call dlsym.
    In general uses of dlerror(3) should call it before use it.
    ------------------------------------------------------------------------

  Modified files:
    branches/ruby_1_9_3/test/dl/test_handle.rb

Index: ruby_1_9_3/test/dl/test_handle.rb
===================================================================
--- ruby_1_9_3/test/dl/test_handle.rb	(revision 32623)
+++ ruby_1_9_3/test/dl/test_handle.rb	(revision 32624)
@@ -169,5 +169,16 @@
       handle = DL::Handle::DEFAULT
       assert_not_nil handle['malloc']
     end unless /mswin|mingw/ =~ RUBY_PLATFORM
+
+    def test_dlerror
+      # FreeBSD (at least 7.2 to 7.2) calls nsdispatch(3) when it calls
+      # getaddrinfo(3). And nsdispatch(3) doesn't call dlerror(3) even if
+      # it calls _nss_cache_cycle_prevention_function with dlsym(3).
+      # So our DL::Handle#sym must call dlerror(3) before call dlsym.
+      # In general uses of dlerror(3) should call it before use it.
+      require 'socket'
+      Socket.gethostbyname("localhost")
+      DL.dlopen("/usr/lib/libc.so").sym('strcpy')
+    end if /freebsd/=~ RUBY_PLATFORM
   end
 end

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