commit 9dbfe8bb694e8c6c917f080bb2d8283445eee917
author Elliott Hughes <enh@google.com> Thu Jun 15 09:09:58 2023 -0700
committer Elliott Hughes <enh@google.com> Fri Jun 16 15:59:52 2023 -0700
tree a024de537741c5764f5965f7cadb5466aaa4bb5c
parent 5c6961ff6d0fde3dab0236b0e56be1638b030e52

<arpa/nameser.h>: rationalize __INTRODUCED_IN.

Investigation shows that the symbols that claimed to have been in 32-bit
builds one API level earlier than in 64-bit builds actually weren't ---
everything was actually API level 22. This patch fixes the libc.map.txt
to match reality, and then simplifies the __INTRODUCED_IN()
incantations.

Investigation also shows that we have a bunch of unused #defines, so
this patch removes the ones that don't correspond to functions we
actually expose.

Test: treehugger
Change-Id: I540dd0d1d9561cac17c55eb68a07bed58dd718fa

libc/libc.map.txt

diff --git a/libc/libc.map.txt b/libc/libc.map.txt
index 0102b30..c8bd5d6 100644
--- a/libc/libc.map.txt
+++ b/libc/libc.map.txt
@@ -74,28 +74,28 @@
     __memrchr_chk; # introduced=23
     __memset_chk; # introduced-arm=17 introduced-arm64=21 introduced-x86=17 introduced-x86_64=21
     __mmap2; # arm x86
-    __ns_format_ttl; # arm x86
-    __ns_get16; # arm x86
-    __ns_get32; # arm x86
-    __ns_initparse; # arm x86
-    __ns_makecanon; # arm x86
-    __ns_msg_getflag; # arm x86
-    __ns_name_compress; # arm x86
-    __ns_name_ntol; # arm x86
-    __ns_name_ntop; # arm x86
-    __ns_name_pack; # arm x86
-    __ns_name_pton; # arm x86
-    __ns_name_rollback; # arm x86
-    __ns_name_skip; # arm x86
-    __ns_name_uncompress; # arm x86
-    __ns_name_unpack; # arm x86
-    __ns_parserr; # arm x86
-    __ns_put16; # arm x86
-    __ns_put32; # arm x86
-    __ns_samename; # arm x86
-    __ns_skiprr; # arm x86
-    __ns_sprintrr; # arm x86
-    __ns_sprintrrf; # arm x86
+    __ns_format_ttl; # arm x86 introduced=22
+    __ns_get16; # arm x86 introduced=22
+    __ns_get32; # arm x86 introduced=22
+    __ns_initparse; # arm x86 introduced=22
+    __ns_makecanon; # arm x86 introduced=22
+    __ns_msg_getflag; # arm x86 introduced=22
+    __ns_name_compress; # arm x86 introduced=22
+    __ns_name_ntol; # arm x86 introduced=22
+    __ns_name_ntop; # arm x86 introduced=22
+    __ns_name_pack; # arm x86 introduced=22
+    __ns_name_pton; # arm x86 introduced=22
+    __ns_name_rollback; # arm x86 introduced=22
+    __ns_name_skip; # arm x86 introduced=22
+    __ns_name_uncompress; # arm x86 introduced=22
+    __ns_name_unpack; # arm x86 introduced=22
+    __ns_parserr; # arm x86 introduced=22
+    __ns_put16; # arm x86 introduced=22
+    __ns_put32; # arm x86 introduced=22
+    __ns_samename; # arm x86 introduced=22
+    __ns_skiprr; # arm x86 introduced=22
+    __ns_sprintrr; # arm x86 introduced=22
+    __ns_sprintrrf; # arm x86 introduced=22
     __open_2; # introduced-arm=17 introduced-arm64=21 introduced-x86=17 introduced-x86_64=21
     __openat; # arm x86
     __openat_2; # introduced-arm=17 introduced-arm64=21 introduced-x86=17 introduced-x86_64=21