Set Ragel.rl char type to unsigned, #135

src/hs.h

@@ -43,7 +43,7 @@
 
 #define HS_MAJOR      5
 #define HS_MINOR      4
-#define HS_PATCH      0
+#define HS_PATCH      9
 
 #include "hs_compile.h"
 #include "hs_runtime.h"

src/parser/Parser.rl

@@ -272,6 +272,7 @@ unichar readUtf8CodePoint4c(const char *s) {
 
 %%{
     machine regex;
+    alphtype unsigned char;
 
     action throwUnsupportedEscape {
         ostringstream str;

src/parser/control_verbs.rl

@@ -54,6 +54,7 @@ const char *read_control_verbs(const char *ptr, const char *end, size_t start,
 
     %%{
         machine ControlVerbs;
+        alphtype unsigned char;
 
         # Verbs that we recognise but do not support.
         unhandledVerbs = '(*' (