On Wed, Oct 18, 2017 at 10:38:41PM -0200, Fabio Estevam wrote: > On Wed, Oct 18, 2017 at 10:02 PM, Rob Herring <robh@xxxxxxxxxx> wrote: > > On Wed, Oct 18, 2017 at 6:28 PM, Fabio Estevam <festevam@xxxxxxxxx> wrote: > >> From: Fabio Estevam <fabio.estevam@xxxxxxx> > >> > >> When dtc is called without any argument the application hangs forever. > >> > >> Instead of hanging, print the usage and exit. > > > > I think it is valid to do: > > dtc < in > out > > > > This doesn't hang: > > $ dtc < /dev/null > > Error: <stdin>:0.0 syntax error > > FATAL ERROR: Unable to parse input tree > > These examples do not have argc == 1. Yes they do. Everything after the < is processed by the shell and doesn't appear to dtc as a parameter. > If 'dtc' is called with no arguments than the application never > exits. If dtc is called with no arguments it attempts to read a dts from standard input and send a dtb to standard output. It exits when input finishes. So, if you press ^D after starting it, it will exit (with an error, because you haven't put in a valid dts). -- David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/~dgibson
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