From: Michael Friedrich <michael.friedrich@icinga.com>
Date: Wed, 16 Jan 2019 16:27:38 +0000 (+0100)
Subject: Log: Ensure not to pass negative values to localtime()
X-Git-Tag: v2.11.0-rc1~255^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=refs%2Fpull%2F6899%2Fhead;p=icinga2

Log: Ensure not to pass negative values to localtime()

refs #6887
---

diff --git a/lib/icinga/checkable-check.cpp b/lib/icinga/checkable-check.cpp
index e70648d89..f8b1d1ff7 100644
--- a/lib/icinga/checkable-check.cpp
+++ b/lib/icinga/checkable-check.cpp
@@ -82,10 +82,11 @@ void Checkable::UpdateNextCheck(const MessageOrigin::Ptr& origin)
 	adj = std::min(0.5 + fmod(GetSchedulingOffset(), interval * 5) / 100.0, adj);
 
 	double nextCheck = now - adj + interval;
+	double lastCheck = GetLastCheck();
 
 	Log(LogDebug, "Checkable")
 		<< "Update checkable '" << GetName() << "' with check interval '" << GetCheckInterval()
-		<< "' from last check time at " << Utility::FormatDateTime("%Y-%m-%d %H:%M:%S %z", GetLastCheck())
+		<< "' from last check time at " << Utility::FormatDateTime("%Y-%m-%d %H:%M:%S %z", (lastCheck < 0 ? 0 : lastCheck))
 		<< " (" << GetLastCheck() << ") to next check time at " << Utility::FormatDateTime("%Y-%m-%d %H:%M:%S %z", nextCheck) << "(" << nextCheck << ").";
 
 	SetNextCheck(nextCheck, false, origin);