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tools lib traceevent: Fix off-by-one bug in pevent_strerror() 

As pevent_errno is defined using PEVENT_ERRORS which uses _PE macro
magic, the first errno is bigger than __PEVENT_ERRNO_START by 1. So we
need to subtract the 1 also when calculating the index of the error
strings.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1345707420-21767-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2012-08-23 16:37:00 +09:00 committed by Arnaldo Carvalho de Melo
parent e1aa7c30c5
commit f63fe79fa0
1 changed files with 1 additions and 1 deletions
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2
tools/lib/traceevent/event-parse.c
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@ -4822,7 +4822,7 @@ int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum,
errnum >= __PEVENT_ERRNO__END) errnum >= __PEVENT_ERRNO__END)
return -1; return -1;
idx = errnum - __PEVENT_ERRNO__START; idx = errnum - __PEVENT_ERRNO__START - 1;
msg = pevent_error_str[idx]; msg = pevent_error_str[idx];
switch (errnum) { switch (errnum) {