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Groups > linux.kernel > #1628979

[PATCH 4/5] trace-cmd: fix argument parsing minor BUG

From Federico Vaga <federico.vaga@vaga.pv.it>
Newsgroups linux.kernel
Subject [PATCH 4/5] trace-cmd: fix argument parsing minor BUG
Date 2017-04-23 12:40 +0200
Message-ID <tzn5T-7jm-5@gated-at.bofh.it> (permalink)
References <tzn5U-7jm-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

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For some reason the list command does not use anymore `getopt()`
to parse the arguments, instead it uses a custum implementation.

During this change [5da0eff trace-cmd: Add regex for listing of events]
the variable `optind` has been forgotten.

To reproduce the problem try to use invalid arguments. The application
will not report the correct invalid argument

$ ./trace-cmd list -a
list: invalid option -- 'i'

Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it>
---
 trace-cmd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/trace-cmd.c b/trace-cmd.c
index 1a62faa..a05df92 100644
--- a/trace-cmd.c
+++ b/trace-cmd.c
@@ -706,7 +706,7 @@ int main (int argc, char **argv)
 					break;
 				default:
 					fprintf(stderr, "list: invalid option -- '%c'\n",
-						argv[optind][1]);
+						argv[i][1]);
 					usage(argv);
 				}
 			}
-- 
2.9.3

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[PATCH 4/5] trace-cmd: fix argument parsing minor BUG Federico Vaga <federico.vaga@vaga.pv.it> - 2017-04-23 12:40 +0200

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