Make run_perl() return undef if $Config{perlpath} is not suitable

This may happen if the perl binary has been relocated.

diff --git a/lib/VPIT/TestHelpers.pm b/lib/VPIT/TestHelpers.pm
index 475a86a47c4e6636199f2db4394026ef0fd2277c..940d7f459877535987d9cbdad3b3408d777a6678 100644 (file)
--- a/lib/VPIT/TestHelpers.pm
+++ b/lib/VPIT/TestHelpers.pm
@@ -156,6 +156,9 @@ sub run_perl {
  my $perl = $^X;
  unless (-e $perl and -x $perl) {
   $perl = $Config::Config{perlpath};
+  unless (-e $perl and -x $perl) {
+   return undef;
+  }
  }
 
  system { $perl } $perl, '-T', map("-I$_", @INC), '-e', $code;