From 94dc9792a9f636771ea1388f395ca89a2d07c74b Mon Sep 17 00:00:00 2001 From: Jonathan McCrohan Date: Tue, 10 Jan 2012 17:38:54 +0000 Subject: Handle 32bit signed overflow. --- src/modbuslog.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'src/modbuslog.c') diff --git a/src/modbuslog.c b/src/modbuslog.c index e7ccb05..1e849bb 100644 --- a/src/modbuslog.c +++ b/src/modbuslog.c @@ -309,7 +309,12 @@ int main(int argc, char *argv[]) { int intervalid; FILE *intervalfile = fopen("/var/modbuslog/interval/interval.txt", "r+"); fscanf(intervalfile, "%d", &intervalid); - intervalid++; + //handle 32bit signed overflow + if(intervalid==2147483647){ + intervalid=0; + }else{ + intervalid++; + } rewind(intervalfile); fprintf(intervalfile, "%d", intervalid); fclose(intervalfile); -- cgit v1.2.3