fixed crash with StringBuilder

When using a newly created StringBuilder then the as_string() method will crash when trying to free an allocated 0-sized chunk of memory. When 0 bytes get allocated with memnew_arr then a NULL pointer gets returned. When trying to free that pointer the programm will crash.

fixed crash with StringBuilder
30822e8a · karroffel · 09732a15 · 30822e8a
Commit 30822e8a authored Jan 20, 2018 by karroffel
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string_builder.cpp core/string_builder.cpp +3 -0

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--- a/core/string_builder.cpp
+++ b/core/string_builder.cpp
@@ -56,6 +56,9 @@ StringBuilder &StringBuilder::append(const char *p_cstring) {

 String StringBuilder::as_string() const {

+	if (string_length == 0)
+		return "";
+
 	CharType *buffer = memnew_arr(CharType, string_length);

 	int current_position = 0;