t/perf/aggregate.perl: tolerate leading spaces

ttaylorr · gitster · commit 76f3b69896bf · 2021-10-04T14:12:28.000-07:00
When using `test_size` with `wc -c`, users on certain platforms can run
into issues when `wc` emits leading space characters in its output,
which confuses get_times.

Callers could switch to use test_file_size instead of `wc -c` (the
former never prints leading space characters, so will always work with
test_size regardless of platform), but this is an easy enough spot to
miss that we should teach get_times to be more tolerant of the input it
accepts.

Teach get_times to do just that by stripping any leading space
characters.

Signed-off-by: Taylor Blau &lt;me@ttaylorr.com&gt;
Signed-off-by: Junio C Hamano &lt;gitster@pobox.com&gt;
diff --git a/t/perf/aggregate.perl b/t/perf/aggregate.perl
@@ -17,8 +17,8 @@ sub get_times {
 		my $rt = ((defined $1 ? $1 : 0.0)*60+$2)*60+$3;
 		return ($rt, $4, $5);
 	# size
-	} elsif ($line =~ /^\d+$/) {
-		return $&;
+	} elsif ($line =~ /^\s*(\d+)$/) {
+		return $1;
 	} else {
 		die "bad input line: $line";
 	}
