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Returning a reference to a dummy character for indices beyond the string length (in operator[]).

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This commit is contained in:
David A. Mellis 2010-08-28 09:55:26 +00:00
parent e3856766c6
commit f8077a96d7
1 changed files with 5 additions and 1 deletions
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6
hardware/arduino/cores/arduino/WString.cpp
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@ -194,7 +194,11 @@ int String::operator>=( const String & rhs ) const
char & String::operator[]( unsigned int index ) char & String::operator[]( unsigned int index )
{ {
// need to check for valid index, to do later static char dummy_writable_char;
if (index >= _length || !_buffer) {
dummy_writable_char = 0;
return dummy_writable_char;
}
return _buffer[ index ]; return _buffer[ index ];
} }