1 files changed, 4 insertions, 0 deletions
diff --git a/pkuuid.h b/pkuuid.h
index 8639e87..0de7f6b 100644
--- a/pkuuid.h
+++ b/pkuuid.h
@@ -153,6 +153,8 @@ std::ostream&
 operator<<(std::ostream &o, const struct pk_uuid& uuid)
 {
 	int i;
+	std::ios_base::fmtflags orig_flags = o.flags();
+	auto fill = o.fill();
 	o << std::hex;
 	for (i = 0; i < 4; ++i) {
 		o << std::setw(2) << std::setfill('0');
@@ -178,6 +180,8 @@ operator<<(std::ostream &o, const struct pk_uuid& uuid)
 		o << std::setw(2) << std::setfill('0');
 		o << (uint16_t)uuid.uuid[i];
 	}
+	o.fill(fill);
+	o.flags(orig_flags);
 	return o;
 }