Update to go1.25.0

src/internal/fuzz/counters_supported.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build (darwin || linux || windows || freebsd) && (amd64 || arm64)
+//go:build (darwin || linux || windows || freebsd || openbsd) && (amd64 || arm64 || loong64)
 
 package fuzz
 

src/internal/fuzz/counters_unsupported.go

@@ -8,7 +8,7 @@
 //
 // If you update this constraint, also update internal/platform.FuzzInstrumented.
 //
-//go:build !((darwin || linux || windows || freebsd) && (amd64 || arm64))
+//go:build !((darwin || linux || windows || freebsd || openbsd) && (amd64 || arm64 || loong64))
 
 package fuzz
 

src/internal/fuzz/coverage.go

@@ -23,11 +23,7 @@ func ResetCoverage() {
 func SnapshotCoverage() {
 	cov := coverage()
 	for i, b := range cov {
-		b |= b >> 1
-		b |= b >> 2
-		b |= b >> 4
-		b -= b >> 1
-		coverageSnapshot[i] = b
+		coverageSnapshot[i] = pow2Table[b]
 	}
 }
 
@@ -102,4 +98,18 @@ var (
 	// the 8-bit coverage counters reside in memory. They're known to cmd/link,
 	// which specially assigns their addresses for this purpose.
 	_counters, _ecounters [0]byte
+
+	// lookup table for faster power of two rounding
+	pow2Table [256]byte
 )
+
+func init() {
+	for i := range pow2Table {
+		b := byte(i)
+		b |= b >> 1
+		b |= b >> 2
+		b |= b >> 4
+		b -= b >> 1
+		pow2Table[i] = b
+	}
+}

src/internal/fuzz/minimize_test.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build darwin || freebsd || linux || windows
+//go:build darwin || freebsd || linux || openbsd || windows
 
 package fuzz
 

src/internal/fuzz/sys_posix.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build darwin || freebsd || linux
+//go:build darwin || freebsd || linux || openbsd
 
 package fuzz
 

src/internal/fuzz/sys_unimplemented.go

@@ -4,7 +4,7 @@
 
 // If you update this constraint, also update internal/platform.FuzzSupported.
 //
-//go:build !darwin && !freebsd && !linux && !windows
+//go:build !darwin && !freebsd && !linux && !openbsd && !windows
 
 package fuzz