Fix potential crash in STRING class

Signed-off-by: Stefan Weil <sw@weilnetz.de>
tesseract-ocr · Nov 30, 2018 · 6b6d9de · 6b6d9de
1 parent b6057f5
commit 6b6d9de
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/ccutil/strngs.cpp b/src/ccutil/strngs.cpp
@@ -195,7 +195,7 @@ int32_t STRING::length() const {
 
 const char* STRING::string() const {
   const STRING_HEADER* header = GetHeader();
-  if (header->used_ == 0)
+  if (!header || header->used_ == 0)
     return nullptr;
 
   // mark header length unreliable because tesseract might