Clarify some z/OS mysteries via code comments.

Followup to r1421305.
PR 56210

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1756163 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/modules/ssl/ssl_util.c b/modules/ssl/ssl_util.c
index 7c6af0d4bda50d726c3a6298113b82374b906177..052d23e82205bed510022595d3cf2eafbc1aa81d 100644 (file)
--- a/modules/ssl/ssl_util.c
+++ b/modules/ssl/ssl_util.c
@@ -373,9 +373,9 @@ static void ssl_util_thr_id(CRYPTO_THREADID *id)
      */
 #ifdef __MVS__
     struct PSA {
-        char unmapped[540];
+        char unmapped[540]; /* PSATOLD is at offset 540 in the PSA */
         unsigned long PSATOLD;
-    } *psaptr = 0;
+    } *psaptr = 0; /* PSA is at address 0 */
 
     CRYPTO_THREADID_set_numeric(id, psaptr->PSATOLD);
 #else