Reset protocol version before loading new engine

The protocol version was not reset, so if the previous engine was v1,
the newly loaded engine would not be sent a protover command, so
that its features would remain unknown!

diff --git a/backend.c b/backend.c
index e062eff..c54a29b 100644 (file)
--- a/backend.c
+++ b/backend.c
@@ -880,6 +880,7 @@ Load (ChessProgramState *cps, int i)
        snprintf(buf, MSG_SIZ, "-fcp %s", engineLine);
        SwapEngines(i); // kludge to parse -f* / -first* like it is -s* / -second*
        ParseArgsFromString(resetOptions); appData.fenOverride[0] = NULL; appData.pvSAN[0] = FALSE;
+       appData.firstProtocolVersion = PROTOVER;
        ParseArgsFromString(buf);
        SwapEngines(i);
        ReplaceEngine(cps, i);
@@ -9911,7 +9912,7 @@ SetPlayer (int player)
     if(mnemonic[i]) {
        snprintf(buf, MSG_SIZ, "-fcp %s", command[i]);
        ParseArgsFromString(resetOptions); appData.fenOverride[0] = NULL; appData.pvSAN[0] = FALSE;
-       appData.firstHasOwnBookUCI = !appData.defNoBook;
+       appData.firstHasOwnBookUCI = !appData.defNoBook; appData.protocolVersion[0] = PROTOVER;
        ParseArgsFromString(buf);
     }
     free(engineName);