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-rw-r--r--compiler/main.nim3
1 files changed, 3 insertions, 0 deletions
diff --git a/compiler/main.nim b/compiler/main.nim
index a609d26bc..c94af24d5 100644
--- a/compiler/main.nim
+++ b/compiler/main.nim
@@ -95,6 +95,9 @@ proc commandCompileToC(graph: ModuleGraph) =
       graph.config.notes = graph.config.mainPackageNotes
       return
 
+  if not extccomp.ccHasSaneOverflow(conf):
+    conf.symbols.defineSymbol("nimEmulateOverflowChecks")
+
   compileProject(graph)
   if graph.config.errorCounter > 0:
     return # issue #9933