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* [newlib-cygwin] Cygwin: resolver: cygwin_query() skip response header on internal error
@ 2022-01-19 14:31 Corinna Vinschen
  0 siblings, 0 replies; only message in thread
From: Corinna Vinschen @ 2022-01-19 14:31 UTC (permalink / raw)
  To: cygwin-cvs

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=93511d575ed3a838cd4943a4e24c787d5a0c679d

commit 93511d575ed3a838cd4943a4e24c787d5a0c679d
Author: Anton Lavrentiev via Cygwin-patches <cygwin-patches@cygwin.com>
Date:   Wed Jan 19 08:12:55 2022 -0500

    Cygwin: resolver: cygwin_query() skip response header on internal error
    
    - When dn_comp() failed internally there is no longer any need to
    fill the response header since it's now all cleared upon entry

Diff:
---
 winsup/cygwin/libc/minires-os-if.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/winsup/cygwin/libc/minires-os-if.c b/winsup/cygwin/libc/minires-os-if.c
index c6fde776a..4e8e9cf21 100644
--- a/winsup/cygwin/libc/minires-os-if.c
+++ b/winsup/cygwin/libc/minires-os-if.c
@@ -266,6 +266,7 @@ static int cygwin_query(res_state statp, const char * DomName, int Class, int Ty
       if ((len = dn_comp(rr->pName, ptr, AnsLength - 4,
 			 dnptrs, &dnptrs[DIM(dnptrs) - 1])) < 0) {
 	statp->res_h_errno = NETDB_INTERNAL;  /* dn_comp sets errno */
+	AnsLength = 0;
 	len = -1;
 	goto done;
       }
@@ -283,7 +284,7 @@ static int cygwin_query(res_state statp, const char * DomName, int Class, int Ty
       DPRINTF(debug, "Unexpected section order for \"%s\" %d\n", DomName, Type);
       continue;
     }
-    section =  rr->Flags.DW & 0x3;
+    section = rr->Flags.DW & 0x3;
 
     ptr = write_record(ptr, rr, AnsPtr + AnsLength, dnptrs,
 		       &dnptrs[DIM(dnptrs) - 1], debug);


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