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-rw-r--r--cores/arduino/WString.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/cores/arduino/WString.h b/cores/arduino/WString.h
index 6c07427..18b6541 100644
--- a/cores/arduino/WString.h
+++ b/cores/arduino/WString.h
@@ -43,7 +43,7 @@ class String
{
public:
// constructors
- String(const char *cstr = NULL);
+ String(const char *cstr = "");
String(const String &str);
#ifdef __GXX_EXPERIMENTAL_CXX0X__
String(String &&rval);