From: Mark Andrews <marka@isc.org>
Date: Thu, 13 Aug 2020 06:42:40 +0000 (+1000)
Subject: Address infinite loop on EOF.
X-Git-Tag: v9.17.5~52^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c59ab04f6f2aec88ea3a99a0c36f0f0188001e3a;p=thirdparty%2Fbind9.git

Address infinite loop on EOF.
---

diff --git a/fuzz/isc_lex_getmastertoken.c b/fuzz/isc_lex_getmastertoken.c
index a9beb7d681d..2649dd0cfbf 100644
--- a/fuzz/isc_lex_getmastertoken.c
+++ b/fuzz/isc_lex_getmastertoken.c
@@ -47,6 +47,7 @@ int
 LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
 	isc_buffer_t buf;
 	isc_result_t result;
+	isc_token_t token;
 	isc_tokentype_t expect;
 	bool eol;
 
@@ -69,9 +70,8 @@ LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
 	CHECK(isc_lex_openbuffer(lex, &buf));
 
 	do {
-		isc_token_t token;
 		result = isc_lex_getmastertoken(lex, &token, expect, eol);
-	} while (result == ISC_R_SUCCESS);
+	} while (result == ISC_R_SUCCESS && token.type != isc_tokentype_eof);
 
 	return (0);
 }