cast first char symbol to unsigned char for functions for kh_str_starts_t khash struct

anmyachev · vnlitvinov · commit 16b5922572f5 · 2019-03-20T19:30:51.000+03:00
diff --git a/pandas/_libs/src/klib/khash_python.h b/pandas/_libs/src/klib/khash_python.h
@@ -99,13 +99,13 @@ inline static kh_str_starts_t* kh_init_str_starts(void) {
 inline static khint_t kh_put_str_starts_item(kh_str_starts_t* table, char* key, int* ret) {
     khint_t result = kh_put_str(table->table, key, ret);
 	if (*ret != 0) {
-		table->starts[key[0]] = 1;
+		table->starts[(unsigned char)key[0]] = 1;
 	}
     return result;
 }
 
 inline static khint_t kh_get_str_starts_item(kh_str_starts_t* table, char* key) {
-    int ch = *key;
+    unsigned char ch = *key;
 	if (table->starts[ch]) {
 		if (ch == '\0' || kh_get_str(table->table, key) != table->table->n_buckets) return 1;
 	}

Original file line number	Diff line number	Diff line change
`@@ -99,13 +99,13 @@ inline static kh_str_starts_t* kh_init_str_starts(void) {`
`99`	`99`	`inline static khint_t kh_put_str_starts_item(kh_str_starts_t* table, char* key, int* ret) {`
`100`	`100`	`khint_t result = kh_put_str(table->table, key, ret);`
`101`	`101`	`if (*ret != 0) {`
`102`		`- table->starts[key[0]] = 1;`
	`102`	`+ table->starts[(unsigned char)key[0]] = 1;`
`103`	`103`	`}`
`104`	`104`	`return result;`
`105`	`105`	`}`
`106`	`106`
`107`	`107`	`inline static khint_t kh_get_str_starts_item(kh_str_starts_t* table, char* key) {`
`108`		`- int ch = *key;`
	`108`	`+ unsigned char ch = *key;`
`109`	`109`	`if (table->starts[ch]) {`
`110`	`110`	`if (ch == '\0' \|\| kh_get_str(table->table, key) != table->table->n_buckets) return 1;`
`111`	`111`	`}`