File gcc6-char-cast.patch of Package espeak
--- a/src/tr_languages.cpp
+++ b/src/tr_languages.cpp
@@ -198,7 +198,7 @@ static const unsigned short chars_ignore
0x200d, 1, // zero width joiner
0, 0 };
-const char string_ordinal[] = {0xc2,0xba,0}; // masculine ordinal character, UTF-8
+const char string_ordinal[] = {(char)0xc2,(char)0xba,0}; // masculine ordinal character, UTF-8
static Translator* NewTranslator(void)