From: Mark Andrews <marka@isc.org>
Date: Mon, 17 Aug 2020 03:03:49 +0000 (+1000)
Subject: Print out input if dns_rdata_fromtext() fails in debug mode.
X-Git-Tag: v9.17.5~43^2~4
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e4d30cb0075297defd9169e1dd87b6c98b987085;p=thirdparty%2Fbind9.git

Print out input if dns_rdata_fromtext() fails in debug mode.
---

diff --git a/fuzz/dns_rdata_fromwire_text.c b/fuzz/dns_rdata_fromwire_text.c
index 82941143a68..e231168f1f2 100644
--- a/fuzz/dns_rdata_fromwire_text.c
+++ b/fuzz/dns_rdata_fromwire_text.c
@@ -168,6 +168,9 @@ LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
 	isc_buffer_init(&target, fromtext, sizeof(fromtext));
 	result = dns_rdata_fromtext(&rdata2, rdclass, rdtype, lex, dns_rootname,
 				    0, mctx, &target, &callbacks);
+	if (debug && result != ISC_R_SUCCESS) {
+		fprintf(stderr, "'%s'\n", totext);
+	}
 	assert(result == ISC_R_SUCCESS);
 	assert(rdata2.length == size);
 	assert(!memcmp(rdata2.data, data, size));