From 5015cde4c8f4d5b50c906967cdf88d8bff82dca1 Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@gnu.org>
Date: Thu, 22 Aug 2002 07:22:03 +0000
Subject: * scripts/firstversions.awk: When encountering a version newer than

	the specified earliest version, be sure to emit the specified earliest
	version first if any renaming of an older version to that has been.
---
 ChangeLog                 |  6 ++++++
 scripts/firstversions.awk | 27 +++++++++++++++++++++------
 2 files changed, 27 insertions(+), 6 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 282bf9bfa7..ac29548eac 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2002-08-22  Roland McGrath  <roland@redhat.com>
+
+	* scripts/firstversions.awk: When encountering a version newer than
+	the specified earliest version, be sure to emit the specified earliest
+	version first if any renaming of an older version to that has been.
+
 2002-08-21  Roland McGrath  <roland@redhat.com>
 
 	* configure.in: Make GCC version check require 3.[2-9]* and no others.
diff --git a/scripts/firstversions.awk b/scripts/firstversions.awk
index 1a500f4f1d..8da92ae485 100644
--- a/scripts/firstversions.awk
+++ b/scripts/firstversions.awk
@@ -27,20 +27,35 @@ $1 == "}" {
   if ((thislib, idx[thislib]) in firstversion) {
     # XXX relative string comparison loses if we ever have multiple digits
     # between dots in GLIBC_x.y[.z] names.
-    f = firstversion[thislib, idx[thislib]];
-    v = f;
+    f = v = firstversion[thislib, idx[thislib]];
     while ($1 >= v) {
-      firstversion[thislib, idx[thislib]] = 0;
+      delete firstversion[thislib, idx[thislib]];
       idx[thislib]++;
       if ((thislib, idx[thislib]) in firstversion)
         v = firstversion[thislib, idx[thislib]];
       else
         break;
     }
-    if ($1 >= v || $1 == f)
+    if ($1 == v || $1 == f)
+      # This version was the specified earliest version itself.
       print;
-    else
-      print $1, "=", v;
+    else if ($1 < v) {
+      # This version is older than the specified earliest version.
+      print "  " $1, "=", v;
+      # Record that V has been referred to, so we will be sure to emit it
+      # if we hit a later one without hitting V itself.
+      usedversion[thislib, v] = 1;
+    }
+    else {
+      # This version is newer than the specified earliest version.
+      # We haven't seen that version itself or else we wouldn't be here
+      # because we would have removed it from the firstversion array.
+      # If there were any earlier versions that used that one, emit it now.
+      if ((thislib, v) in usedversion) {
+        print "  " v;
+      }
+      print "  " $1;
+    }
   }
   else
     print;
-- 
cgit 1.4.1