Fixed #4125: CodeGen: __crystal_raise fun is expanded with double body

crystal-lang · Mar 9, 2017 · 5b32e46 · 5b32e46
1 parent 176bd62
commit 5b32e46
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/compiler/crystal/codegen/codegen.cr b/src/compiler/crystal/codegen/codegen.cr
@@ -349,6 +349,10 @@ module Crystal
       end
 
       unless node.external.dead?
+        # Mark as dead so we don't generate it twice
+        # (can happen with well known functions like __crystal_raise)
+        node.external.dead = true
+
         if node.external.used?
           codegen_fun node.real_name, node.external, @program, is_exported_fun: true
         else