v4-0002-libpq-Trace-NegotiateProtocolVersion-correctly.patch

From 804da9044f08c62db598b42296b973284ca5b32b Mon Sep 17 00:00:00 2001
From: Jelte Fennema-Nio <jelte.fennema@microsoft.com>
Date: Wed, 5 Jun 2024 11:40:04 +0200
Subject: [PATCH v4 2/7] libpq: Trace NegotiateProtocolVersion correctly

This changes the libpq tracing code to correctly trace the
NegotiateProtocolVersion message. Previously it wasn't important that
tracing of the NegotiateProtocolVersion message worked correctly,
because in practice libpq never received it. Now that we are planning to
introduce protocol changes in future commits it starts to become more
useful for testing/debugging.
---
 src/interfaces/libpq/fe-trace.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/interfaces/libpq/fe-trace.c b/src/interfaces/libpq/fe-trace.c
index 641e70f321c..a45f0d85587 100644
--- a/src/interfaces/libpq/fe-trace.c
+++ b/src/interfaces/libpq/fe-trace.c
@@ -578,9 +578,15 @@ pqTraceOutput_RowDescription(FILE *f, const char *message, int *cursor, bool reg
 static void
 pqTraceOutput_NegotiateProtocolVersion(FILE *f, const char *message, int *cursor)
 {
+	int			nparams;
+
 	fprintf(f, "NegotiateProtocolVersion\t");
 	pqTraceOutputInt32(f, message, cursor, false);
-	pqTraceOutputInt32(f, message, cursor, false);
+	nparams = pqTraceOutputInt32(f, message, cursor, false);
+	for (int i = 0; i < nparams; i++)
+	{
+		pqTraceOutputString(f, message, cursor, false);
+	}
 }
 
 static void
-- 
2.43.0