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net: fix cgoResSearch

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CL 457439 mistakenly redeclared size inside the for loop, causing
cgoResSearch to always fail and fall back to goLookupCNAME.

Change-Id: I3e142d34287388284a8998ac13761b1e0c2911a5
Reviewed-on: https://go-review.googlesource.com/c/go/+/696895
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Mateusz Poliwczak <mpoliwczak34@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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database64128 2025-08-18 16:55:40 +08:00 • committed by Gopher Robot
parent ed7f804775
commit bbd5342a62
1 changed files with 1 additions and 1 deletions
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2
src/net/cgo_unix.go
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@ -351,7 +351,7 @@ func cgoResSearch(hostname string, rtype, class int) ([]dnsmessage.Resource, err
var size int var size int
for { for {
size := _C_res_nsearch(state, (*_C_char)(unsafe.Pointer(s)), class, rtype, buf, bufSize) size = _C_res_nsearch(state, (*_C_char)(unsafe.Pointer(s)), class, rtype, buf, bufSize)
if size <= 0 || size > 0xffff { if size <= 0 || size > 0xffff {
return nil, errors.New("res_nsearch failure") return nil, errors.New("res_nsearch failure")
} }