36 lines
1.1 KiB
Diff
36 lines
1.1 KiB
Diff
From 8dd4e2b6c8b99952296319a0e0c0e0f3e6160e32 Mon Sep 17 00:00:00 2001
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From: cwalker <cole.walker@windriver.com>
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Date: Fri, 1 Mar 2024 17:50:29 +0000
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Subject: [PATCH 57/57] Fix uninitialized variable in nmea_scan_rmc
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Initialize the tm_isdst variable to ensure that mktime does not fail on
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recent versions of glibc.
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This change initializes tm_isdst to 0 for compatibility with UTC.
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Previously, a positive value in the uninitialized tm_isdst would cause
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mktime to fail and ts2phc would repeatedly log "invalid master time
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stamp". This resulted in intermittent synchronization errors.
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[commit 63fc1ef4fd5e5fc45dd4de3bf27920bb109a4357 upstream]
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Signed-off-by: cwalker <cole.walker@windriver.com>
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---
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nmea.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/nmea.c b/nmea.c
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index dc865d0..d86d81c 100644
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--- a/nmea.c
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+++ b/nmea.c
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@@ -157,6 +157,7 @@ static int nmea_scan_rmc(struct nmea_parser *np, struct nmea_rmc *result)
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}
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tm.tm_year += 100;
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tm.tm_mon--;
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+ tm.tm_isdst = 0;
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result->ts.tv_sec = mktime(&tm);
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result->ts.tv_nsec = msec * 1000000UL;
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result->fix_valid = status == 'A' ? true : false;
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--
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2.30.2
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