merges r30894 from trunk into ruby_1_9_2.

--
 * compile.c (get_exception_sym2type): guard temporary object from GC.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@31517 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 1 deletions

diff --git a/compile.c b/compile.c
index 1f27174689..76dc76a161 100644
--- a/compile.c
+++ b/compile.c
@@ -5152,6 +5152,7 @@ get_exception_sym2type(VALUE sym)
 {
 #undef rb_intern
 #define rb_intern(str) rb_intern_const(str)
+    VALUE sym_inspect;
     static VALUE symRescue, symEnsure, symRetry;
     static VALUE symBreak, symRedo, symNext;
 
@@ -5170,8 +5171,9 @@ get_exception_sym2type(VALUE sym)
     if (sym == symBreak)  return CATCH_TYPE_BREAK;
     if (sym == symRedo)   return  CATCH_TYPE_REDO;
     if (sym == symNext)   return CATCH_TYPE_NEXT;
+    sym_inspect = rb_inspect(sym);
     rb_raise(rb_eSyntaxError, "invalid exception symbol: %s",
-	     RSTRING_PTR(rb_inspect(sym)));
+	     RSTRING_PTR(RB_GC_GUARD(sym_inspect)));
     return 0;
 }