Fix exit code for VMS in util/wrap.pl and test/run_tests.pl

The exit code for VMS is a bit tricky, and while perl translates the
VMS status code from a typical C program to posix terms, it doesn't
automatically translate its exit code into the typical C program VMS
status code.  Perl scripts are recommended to do so explicitly.

Therefore, we make util/wrap.pl and test/run_tests.pl simulate the
typical C program VMS status code for all non-zero exit codes, except
we give them all the error severity (according to the VMS C library
reference manual, exit codes 2 and above are treated as success...).

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15787)

1 files changed, 15 insertions, 1 deletions

diff --git a/util/wrap.pl b/util/wrap.pl
index 69be06d302..1ca09bfdf4 100755
--- a/util/wrap.pl
+++ b/util/wrap.pl
@@ -46,4 +46,18 @@ die "wrap.pl: Failed to execute '", join(' ', @cmd), "': $!\n"
 exit(($? & 255) | 128) if ($? & 255) != 0;
 
 # When not a signal, just shift down the subprocess exit code and use that.
-exit($? >> 8);
+my $exitcode = $? >> 8;
+
+# For VMS, perl recommendations is to emulate what the C library exit() does
+# for all non-zero exit codes, except we set the error severity rather than
+# success.
+# Ref: https://perldoc.perl.org/perlport#exit
+#      https://perldoc.perl.org/perlvms#$?
+if ($^O eq 'VMS' && $exitcode != 0) {
+    $exitcode =
+        0x35a000                # C facility code
+        + ($exitcode * 8)       # shift up to make space for the 3 severity bits
+        + 2                     # Severity: E(rror)
+        + 0x10000000;           # bit 28 set => the shell stays silent
+}
+exit($exitcode);