commit b7fb295e7945baeb1916b3b7bd4330174c9140ed
author Wan-Teh Chang <wtc@google.com> Thu Jun 17 16:42:29 2021 -0700
committer Wan-Teh Chang <wtc@google.com> Mon Jul 19 21:39:04 2021 +0000
tree 7ef0dbce81e1e8c1c97c8e5b3919578b4c7bf1c9
parent 1f73e0235bf3067c9fcbd9796c3e23b0c30d60fe

Check array has two elements before using index 1

Check if the $git_desc_components array has two elements before using
$git_desc_components[1]. The $git_desc string may contain no '-', e.g.,
"3.1.1", so split('-', $git_desc, 2) may return an array of only one
element.

BUG=aomedia:3081

Change-Id: Ia9b75af1ec9390c4bea988a52d4f54e9cd23468a
(cherry picked from commit 11cda363ddad75bb8474c16558a98d2dbf35e617)

build/cmake/version.pl

diff --git a/build/cmake/version.pl b/build/cmake/version.pl
index 7d23f2b..392815f 100755
--- a/build/cmake/version.pl
+++ b/build/cmake/version.pl
@@ -62,7 +62,9 @@
 my $version_extra = "";
 if (length($git_desc) > 0) {
   my @git_desc_components = split('-', $git_desc, 2);
-  $version_extra = $git_desc_components[1];
+  if (@git_desc_components > 1) {
+    $version_extra = $git_desc_components[1];
+  }
 }
 
 open(my $version_file, '>', $version_filename) or