update modernc.org/sqlite to v1.37.0-concurrrency-workaround (#3958)

vendor/modernc.org/memory/mmap_unix.go

@@ -2,16 +2,16 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE-MMAP-GO file.
 
-//go:build darwin || dragonfly || freebsd || linux || (solaris && !illumos) || netbsd
-// +build darwin dragonfly freebsd linux solaris,!illumos netbsd
+//go:build unix
 
 // Modifications (c) 2017 The Memory Authors.
 
 package memory // import "modernc.org/memory"
 
 import (
+	"golang.org/x/sys/unix"
 	"os"
-	"syscall"
+	"unsafe"
 )
 
 const pageSizeLog = 20
@@ -22,28 +22,18 @@ var (
 )
 
 func unmap(addr uintptr, size int) error {
-	_, _, errno := syscall.Syscall(syscall.SYS_MUNMAP, addr, uintptr(size), 0)
-	if errno != 0 {
-		return errno
-	}
-
-	return nil
+	return unix.MunmapPtr(unsafe.Pointer(addr), uintptr(size))
 }
 
 // pageSize aligned.
 func mmap(size int) (uintptr, int, error) {
 	size = roundup(size, osPageSize)
-
-	// The actual mmap syscall varies by architecture. mmapSyscall provides same
-	// functionality as the unexported funtion syscall.mmap and is declared in
-	// mmap_*_*.go and mmap_fallback.go. To add support for a new architecture,
-	// check function mmap in src/syscall/syscall_*_*.go or
-	// src/syscall/zsyscall_*_*.go in Go's source code.
-	p, err := mmapSyscall(0, uintptr(size+pageSize), syscall.PROT_READ|syscall.PROT_WRITE, syscall.MAP_PRIVATE|syscall.MAP_ANON, -1, 0)
+	up, err := unix.MmapPtr(-1, 0, nil, uintptr(size+pageSize), unix.PROT_READ|unix.PROT_WRITE, unix.MAP_PRIVATE|unix.MAP_ANON)
 	if err != nil {
 		return 0, 0, err
 	}
 
+	p := uintptr(up)
 	n := size + pageSize
 	if p&uintptr(osPageMask) != 0 {
 		panic("internal error")