Fix several signedness bugs

Reported by gcc -Wall -Wextra.

diff --git a/libass/ass.c b/libass/ass.c
index 68c8600d3b42d9438a850386c6a08b747c8a6749..094cc9202fa90fad16aadb04c8751c4f31be6264 100644 (file)
--- a/libass/ass.c
+++ b/libass/ass.c
@@ -226,7 +226,7 @@ static long long string2timecode(ASS_Library *library, char *p)
 {
     unsigned h, m, s, ms;
     long long tm;
-    int res = sscanf(p, "%d:%d:%d.%d", &h, &m, &s, &ms);
+    int res = sscanf(p, "%u:%u:%u.%u", &h, &m, &s, &ms);
     if (res < 4) {
         ass_msg(library, MSGL_WARN, "Bad timestamp");
         return 0;

diff --git a/libass/ass_string.c b/libass/ass_string.c
index 0a086b12598fc458c9744fc33c9a1bcdad61df8d..c19efad56aa704b499ecf709b2e65cc91f89a458 100644 (file)
--- a/libass/ass_string.c
+++ b/libass/ass_string.c
@@ -21,7 +21,7 @@
 
 #include "ass_string.h"
 
-static const char lowertab[] = {
+static const unsigned char lowertab[] = {
     0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a,
     0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15,
     0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,