diff --git a/src/runtime/c/gu/string.c b/src/runtime/c/gu/string.c
index 3e754a72c..386eb7a6f 100644
--- a/src/runtime/c/gu/string.c
+++ b/src/runtime/c/gu/string.c
@@ -82,6 +82,20 @@ gu_string_buf_freeze(GuStringBuf* sb, GuPool* pool)
 	return p;
 }
 
+char*
+gu_string_buf_data(GuStringBuf* sb)
+{
+	gu_out_flush(sb->out, NULL);
+	return gu_buf_data(sb->buf);
+}
+
+size_t
+gu_string_buf_length(GuStringBuf* sb)
+{
+	gu_out_flush(sb->out, NULL);
+	return gu_buf_length(sb->buf);
+}
+
 void
 gu_string_buf_flush(GuStringBuf* sb)
 {
diff --git a/src/runtime/c/gu/string.h b/src/runtime/c/gu/string.h
index 17b932397..d52c9dddb 100644
--- a/src/runtime/c/gu/string.h
+++ b/src/runtime/c/gu/string.h
@@ -33,6 +33,12 @@ gu_string_buf_out(GuStringBuf* sb);
 GuString
 gu_string_buf_freeze(GuStringBuf* sb, GuPool* pool);
 
+char*
+gu_string_buf_data(GuStringBuf* sb);
+
+size_t
+gu_string_buf_length(GuStringBuf* sb);
+
 void
 gu_string_buf_flush(GuStringBuf* sb);