Initial import

tests/toverflw.nim

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+# Tests emc's ability to detect overflows
+
+import
+  io
+
+{.push overflowChecks: on.}
+
+var
+  a, b: int
+a = high(int)
+b = -2
+try:
+  writeln(stdout, b - a)
+except EOverflow:
+  writeln(stdout, "the computation overflowed")
+
+{.pop.} # overflow check
+#OUT the computation overflowed