commit dbfa58bb128cae86729578ac596056b3385817ef
Author: Christian Egli <christian.egli@sbs.ch>
Date:   Wed Jun 6 16:41:53 2018 +0200

    Check index before writing to result->chars
    
    Fixes #595

diff --git a/liblouis/compileTranslationTable.c b/liblouis/compileTranslationTable.c
index e3ca9607..c0282121 100644
--- a/liblouis/compileTranslationTable.c
+++ b/liblouis/compileTranslationTable.c
@@ -1127,11 +1127,11 @@ parseChars(FileInfo *nested, CharsString *result, CharsString *token) {
 				}
 				in++;
 			}
-			result->chars[out++] = (widechar)ch;
 			if (out >= MAXSTRING) {
 				result->length = out;
 				return 1;
 			}
+			result->chars[out++] = (widechar)ch;
 			continue;
 		}
 		lastOutSize = out;
