~ chicken-core (master) 3e96ff13d29ca1cc2e01a0b7d580040a401282d7

commit 3e96ff13d29ca1cc2e01a0b7d580040a401282d7
Author:     felix <felix@call-with-current-continuation.org>
AuthorDate: Thu Jun 25 13:50:04 2026 +0200
Commit:     felix <felix@call-with-current-continuation.org>
CommitDate: Thu Jun 25 13:50:04 2026 +0200

    get rid of some warnings

diff --git a/utf.c b/utf.c
index 5672b6ed..d699ccf1 100644
--- a/utf.c
+++ b/utf.c
@@ -3518,12 +3518,12 @@ C_regparm C_word C_utf_validate(C_word bv, C_word blen, C_word start, C_word end
     int i = 0;
     C_u32 c;
     int e;
-    unsigned char *s = C_c_string(bv) + C_unfix(start), *s2;
+    unsigned char *s = (unsigned char *)C_c_string(bv) + C_unfix(start), *s2;
     int len = C_unfix(end) - C_unfix(start);
     while (len > 0) {
         if(*s >= 0x80 && *s <= 0xbf) return C_SCHEME_FALSE;
         if(lengths[*s >> 3] > len) return C_SCHEME_FALSE;
-        s2 = utf8_decode(s, &c, &e);
+        s2 = (unsigned char *)utf8_decode((C_char *)s, &c, &e);
         if(e) return C_SCHEME_FALSE;
         len -= (s2 - s);
         s = s2;