software: tools: fau-tg-config: Fix "[-Werror=stringop-truncation]"

In "main()", the "strncat()" is given the size equal to the destination size. Thus, in worst case scenario, the string which needs to be suffixed, will be truncated. Fix the warning. Signed-off-by: Vaibhav Gupta <vaibhav.gupta@cern.ch> Reviewed-by: Federico Vaga <federico.vaga@cern.ch>

software: tools: fau-tg-config: Fix "[-Werror=stringop-truncation]"
In "main()", the "strncat()" is given the size equal to the destination size. Thus, in worst case scenario, the string which needs to be suffixed, will be truncated. Fix the warning. Signed-off-by: Vaibhav Gupta <vaibhav.gupta@cern.ch> Reviewed-by: Federico Vaga <federico.vaga@cern.ch>
7f248d60 · Vaibhav Gupta · Federico Vaga · 1d62702f · 7f248d60
Commit 7f248d60 authored Sep 30, 2022 by Vaibhav Gupta Committed by Federico Vaga Oct 24, 2022
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fau-trg-config.c software/tools/fau-trg-config.c +1 -1

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--- a/software/tools/fau-trg-config.c
+++ b/software/tools/fau-trg-config.c
@@ -188,7 +188,7 @@ int main(int argc, char *argv[])
 		exit(1);
 	}

-	strncat(basepath, argv[optind], base_len);
+	strncat(basepath, argv[optind], base_len - strlen(basepath));
 	printf("Sysfs path to device is: %s\n", basepath);

 	for (i = 0; i < FAU_TRIG_NUM_ATTR; ++i) {