[FIX] garbage in high bytes of arguments

diff --git a/include/binproto.h b/include/binproto.h
index c2da73c9f6a8924b4860ebc01209bd170086de5e..31c4dca8123e12031f509060198475ad2f063a39 100644 (file)
--- a/include/binproto.h
+++ b/include/binproto.h
@@ -146,13 +146,15 @@ static inline char *pack_args(char *to, const char *fmt, ...)
                        to += sizeof(d);
                        break;
                case 'x':
-                       x = (uint64_t)va_arg(args, uint64_t);
+                       x = 0; // real value may be less then uint64_t
+                       x = (unsigned long)(uint64_t)va_arg(args, uint64_t);
                        *to++ = *t;
                        memcpy(to, &x, sizeof(x));
                        to += sizeof(x);
                        break;
                case 'p':
-                       p = (uintptr_t)va_arg(args, uint64_t);
+                       p = 0; // real value may be less then uint64_t
+                       p = (unsigned long)(uintptr_t)va_arg(args, uint64_t);
                        *to++ = *t;
                        memcpy(to, &p, sizeof(p));
                        to += sizeof(p);