Fix segfault when encountering utf-8 characters

Author: jhawthorn

CHANGELOG.md

@@ -1,6 +1,8 @@
 ## 0.7 (unreleased)
 
 Bugfixes:
+
+  - Fixed a segfault when encountering non-ascii characters
   - Fixed building against musl libc
 
 ## 0.6 (2016-07-26)

src/bonus.h

@@ -103,6 +103,6 @@ const size_t bonus_index[256] = {
 	ASSIGN_DIGIT(1)
 };
 
-#define COMPUTE_BONUS(last_ch, ch) (bonus_states[bonus_index[(size_t)(ch)]][(size_t)(last_ch)])
+#define COMPUTE_BONUS(last_ch, ch) (bonus_states[bonus_index[(unsigned char)(ch)]][(unsigned char)(last_ch)])
 
 #endif

test/fzytest.c

@@ -268,6 +268,17 @@ void test_choices_without_search() {
 	choices_destroy(&choices);
 }
 
+/* Regression test for segfault */
+void test_choices_unicode() {
+	choices_t choices;
+	choices_init(&choices);
+
+	choices_add(&choices, "Edmund Husserl - Méditations cartésiennes - Introduction a la phénoménologie.pdf");
+	choices_search(&choices, "e");
+
+	choices_destroy(&choices);
+}
+
 void summary() {
 	printf("%i tests, %i assertions, %i failures\n", testsrun, assertionsrun, testsfailed);
 }
@@ -298,6 +309,7 @@ int main(int argc, char *argv[]) {
 	runtest(test_choices_1);
 	runtest(test_choices_2);
 	runtest(test_choices_without_search);
+	runtest(test_choices_unicode);
 
 	summary();