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-rw-r--r--passes/techmap/abc.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/passes/techmap/abc.cc b/passes/techmap/abc.cc
index 5b19d84fb..bf05c68e7 100644
--- a/passes/techmap/abc.cc
+++ b/passes/techmap/abc.cc
@@ -49,6 +49,7 @@
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
+#include <cctype>
#include <cerrno>
#include <sstream>
#include <climits>