diff --git a/all_test.go b/all_test.go
index b14e72e..5ac0954 100644
--- a/all_test.go
+++ b/all_test.go
@@ -24,6 +24,7 @@ import (
 	"testing"
 	"time"
 
+	"modernc.org/libc"
 	"modernc.org/mathutil"
 )
 
@@ -129,11 +130,16 @@ func tempDB(t testing.TB) (string, *sql.DB) {
 }
 
 func TestScalar(t *testing.T) {
+	libc.MemAuditStart()
+
 	dir, db := tempDB(t)
 
 	defer func() {
 		db.Close()
 		os.RemoveAll(dir)
+		if err := libc.MemAuditReport(); err != nil {
+			t.Error(err)
+		}
 	}()
 
 	t1 := time.Date(2017, 4, 20, 1, 2, 3, 56789, time.UTC)
@@ -197,11 +203,15 @@ func TestScalar(t *testing.T) {
 }
 
 func TestBlob(t *testing.T) {
+	libc.MemAuditStart()
 	dir, db := tempDB(t)
 
 	defer func() {
 		db.Close()
 		os.RemoveAll(dir)
+		if err := libc.MemAuditReport(); err != nil {
+			t.Error(err)
+		}
 	}()
 
 	b1 := []byte(time.Now().String())
@@ -249,6 +259,7 @@ func TestBlob(t *testing.T) {
 }
 
 func benchmarkInsertMemory(b *testing.B, n int) {
+	libc.MemAuditStart()
 	db, err := sql.Open(driverName, "file::memory:")
 	if err != nil {
 		b.Fatal(err)
@@ -256,6 +267,9 @@ func benchmarkInsertMemory(b *testing.B, n int) {
 
 	defer func() {
 		db.Close()
+		if err := libc.MemAuditReport(); err != nil {
+			b.Error(err)
+		}
 	}()
 
 	b.ReportAllocs()
@@ -300,6 +314,7 @@ func BenchmarkInsertMemory(b *testing.B) {
 var staticInt int
 
 func benchmarkNextMemory(b *testing.B, n int) {
+	libc.MemAuditStart()
 	db, err := sql.Open(driverName, "file::memory:")
 	if err != nil {
 		b.Fatal(err)
@@ -307,6 +322,9 @@ func benchmarkNextMemory(b *testing.B, n int) {
 
 	defer func() {
 		db.Close()
+		if err := libc.MemAuditReport(); err != nil {
+			b.Error(err)
+		}
 	}()
 
 	if _, err := db.Exec(`
@@ -368,12 +386,16 @@ func BenchmarkNextMemory(b *testing.B) {
 
 // https://gitlab.com/cznic/sqlite/issues/11
 func TestIssue11(t *testing.T) {
+	libc.MemAuditStart()
 	const N = 6570
 	dir, db := tempDB(t)
 
 	defer func() {
 		db.Close()
 		os.RemoveAll(dir)
+		if err := libc.MemAuditReport(); err != nil {
+			t.Error(err)
+		}
 	}()
 
 	if _, err := db.Exec(`
@@ -396,6 +418,7 @@ func TestIssue11(t *testing.T) {
 
 // https://gitlab.com/cznic/sqlite/issues/12
 func TestMemDB(t *testing.T) {
+	libc.MemAuditStart()
 	// Verify we can create out-of-the heap memory DB instance.
 	db, err := sql.Open(driverName, "file::memory:")
 	if err != nil {
@@ -404,6 +427,9 @@ func TestMemDB(t *testing.T) {
 
 	defer func() {
 		db.Close()
+		if err := libc.MemAuditReport(); err != nil {
+			t.Error(err)
+		}
 	}()
 
 	v := strings.Repeat("a", 1024)
@@ -431,6 +457,7 @@ func TestMemDB(t *testing.T) {
 }
 
 func TestConcurrentGoroutines(t *testing.T) {
+	libc.MemAuditStart()
 	const (
 		ngoroutines = 8
 		nrows       = 5000
@@ -441,7 +468,12 @@ func TestConcurrentGoroutines(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	defer os.RemoveAll(dir)
+	defer func() {
+		os.RemoveAll(dir)
+		if err := libc.MemAuditReport(); err != nil {
+			t.Error(err)
+		}
+	}()
 
 	db, err := sql.Open(driverName, filepath.Join(dir, "test.db"))
 	if err != nil {
@@ -537,12 +569,18 @@ func TestConcurrentGoroutines(t *testing.T) {
 }
 
 func TestConcurrentProcesses(t *testing.T) {
+	libc.MemAuditStart()
 	dir, err := ioutil.TempDir("", "sqlite-test-")
 	if err != nil {
 		t.Fatal(err)
 	}
 
-	defer os.RemoveAll(dir)
+	defer func() {
+		os.RemoveAll(dir)
+		if err := libc.MemAuditReport(); err != nil {
+			t.Error(err)
+		}
+	}()
 
 	m, err := filepath.Glob(filepath.FromSlash("internal/mptest/*"))
 	if err != nil {
@@ -629,6 +667,7 @@ outer:
 
 // https://gitlab.com/cznic/sqlite/issues/19
 func TestIssue19(t *testing.T) {
+	libc.MemAuditStart()
 	const (
 		drop = `
 drop table if exists products;
@@ -660,7 +699,12 @@ INSERT INTO "products" ("id", "user_id", "name", "description", "created_at", "c
 		t.Fatal(err)
 	}
 
-	defer os.RemoveAll(dir)
+	defer func() {
+		os.RemoveAll(dir)
+		if err := libc.MemAuditReport(); err != nil {
+			t.Error(err)
+		}
+	}()
 
 	wd, err := os.Getwd()
 	if err != nil {
@@ -749,6 +793,7 @@ func mustExec(t *testing.T, db *sql.DB, sql string, args ...interface{}) sql.Res
 
 // https://gitlab.com/cznic/sqlite/issues/20
 func TestIssue20(t *testing.T) {
+	libc.MemAuditStart()
 	const TablePrefix = "gosqltest_"
 
 	tempDir, err := ioutil.TempDir("", "")
@@ -756,7 +801,12 @@ func TestIssue20(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	defer os.RemoveAll(tempDir)
+	defer func() {
+		os.RemoveAll(tempDir)
+		if err := libc.MemAuditReport(); err != nil {
+			t.Error(err)
+		}
+	}()
 
 	db, err := sql.Open("sqlite", filepath.Join(tempDir, "foo.db"))
 	if err != nil {
@@ -809,12 +859,18 @@ func TestIssue20(t *testing.T) {
 }
 
 func TestNoRows(t *testing.T) {
+	libc.MemAuditStart()
 	tempDir, err := ioutil.TempDir("", "")
 	if err != nil {
 		t.Fatal(err)
 	}
 
-	defer os.RemoveAll(tempDir)
+	defer func() {
+		os.RemoveAll(tempDir)
+		if err := libc.MemAuditReport(); err != nil {
+			t.Error(err)
+		}
+	}()
 
 	db, err := sql.Open("sqlite", filepath.Join(tempDir, "foo.db"))
 	if err != nil {
@@ -835,12 +891,18 @@ func TestNoRows(t *testing.T) {
 
 // https://gitlab.com/cznic/sqlite/-/issues/28
 func TestIssue28(t *testing.T) {
+	libc.MemAuditStart()
 	tempDir, err := ioutil.TempDir("", "")
 	if err != nil {
 		t.Fatal(err)
 	}
 
-	defer os.RemoveAll(tempDir)
+	defer func() {
+		os.RemoveAll(tempDir)
+		if err := libc.MemAuditReport(); err != nil {
+			t.Error(err)
+		}
+	}()
 
 	db, err := sql.Open("sqlite", filepath.Join(tempDir, "test.db"))
 	if err != nil {
@@ -862,12 +924,18 @@ func TestIssue28(t *testing.T) {
 
 // https://gitlab.com/cznic/sqlite/-/issues/30
 func TestIssue30(t *testing.T) {
+	libc.MemAuditStart()
 	tempDir, err := ioutil.TempDir("", "")
 	if err != nil {
 		t.Fatal(err)
 	}
 
-	defer os.RemoveAll(tempDir)
+	defer func() {
+		os.RemoveAll(tempDir)
+		if err := libc.MemAuditReport(); err != nil {
+			t.Error(err)
+		}
+	}()
 
 	db, err := sql.Open("sqlite", filepath.Join(tempDir, "test.db"))
 	if err != nil {
@@ -926,6 +994,7 @@ Col 3: DatabaseTypeName "DATE", DecimalSize 0 0 false, Length 922337203685477580
 
 // https://gitlab.com/cznic/sqlite/-/issues/35
 func TestTime(t *testing.T) {
+	libc.MemAuditStart()
 	types := []string{
 		"DATE",
 		"DATETIME",
@@ -944,6 +1013,9 @@ func TestTime(t *testing.T) {
 
 	defer func() {
 		db.Close()
+		if err := libc.MemAuditReport(); err != nil {
+			t.Error(err)
+		}
 	}()
 
 	for _, typ := range types {
diff --git a/cgo_test.go b/cgo_test.go
index ae80753..c1f18f2 100644
--- a/cgo_test.go
+++ b/cgo_test.go
@@ -39,6 +39,7 @@ func makename(inMemory bool, driver string, e int) string {
 }
 
 func benchmarkRead(b *testing.B, drivername, file string, n int) {
+	libc.MemAuditStart()
 	os.Remove(file)
 	db, err := sql.Open(drivername, file)
 	if err != nil {
@@ -47,6 +48,9 @@ func benchmarkRead(b *testing.B, drivername, file string, n int) {
 
 	defer func() {
 		db.Close()
+		if err := libc.MemAuditReport(); err != nil {
+			b.Error(err)
+		}
 	}()
 
 	if _, err := db.Exec(`
@@ -126,6 +130,7 @@ func BenchmarkReading1(b *testing.B) {
 }
 
 func benchmarkInsertComparative(b *testing.B, drivername, file string, n int) {
+	libc.MemAuditStart()
 	os.Remove(file)
 	db, err := sql.Open(drivername, file)
 	if err != nil {
@@ -134,6 +139,9 @@ func benchmarkInsertComparative(b *testing.B, drivername, file string, n int) {
 
 	defer func() {
 		db.Close()
+		if err := libc.MemAuditReport(); err != nil {
+			b.Error(err)
+		}
 	}()
 
 	if _, err := db.Exec(`
diff --git a/go.mod b/go.mod
index ff88c20..e57ca61 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.15
 
 require (
 	github.com/mattn/go-sqlite3 v1.14.6
-	modernc.org/libc v0.0.0-20210112160811-243e027176f2
+	modernc.org/libc v0.0.0-20210116154030-fac1e8a80fa8
 	modernc.org/mathutil v1.2.1
-	modernc.org/tcl v0.0.0-20210112162618-d02ee57da865
+	modernc.org/tcl v0.0.0-20210116154350-d39acab84afa
 )
diff --git a/go.sum b/go.sum
index 951cf39..711db10 100644
--- a/go.sum
+++ b/go.sum
@@ -9,13 +9,13 @@ golang.org/x/sys v0.0.0-20201126233918-771906719818 h1:f1CIuDlJhwANEC2MM87MBEVMr
 golang.org/x/sys v0.0.0-20201126233918-771906719818/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 modernc.org/httpfs v1.0.2 h1:4aw8F68gTwx7FWL/vEMjm/XaPwPL16MItkF/P9ziEPY=
 modernc.org/httpfs v1.0.2/go.mod h1:7dosgurJGp0sPaRanU53W4xZYKh14wfzX420oZADeHM=
-modernc.org/libc v0.0.0-20210112160811-243e027176f2 h1:p4QkGWPO/XZek2VrYiAA5k6UewZNr31xyROkyesZvy0=
-modernc.org/libc v0.0.0-20210112160811-243e027176f2/go.mod h1:IR66laG5b3bONN1tfix3Gpy8xk/6WDf+Rtc4NqNczls=
+modernc.org/libc v0.0.0-20210116154030-fac1e8a80fa8 h1:VgMrmNSL/v8CFhC5H3IYpXqh/rG/vE9XJP6oFcMH2Y8=
+modernc.org/libc v0.0.0-20210116154030-fac1e8a80fa8/go.mod h1:IR66laG5b3bONN1tfix3Gpy8xk/6WDf+Rtc4NqNczls=
 modernc.org/mathutil v1.1.1 h1:FeylZSVX8S+58VsyJlkEj2bcpdytmp9MmDKZkKx8OIE=
 modernc.org/mathutil v1.1.1/go.mod h1:mZW8CKdRPY1v87qxC/wUdX5O1qDzXMP5TH3wjfpga6E=
 modernc.org/mathutil v1.2.1 h1:PSIN4RdyeB6MbFsNLSkFCzDjnEVEMS3H/hFHcJtAJ9g=
 modernc.org/mathutil v1.2.1/go.mod h1:mZW8CKdRPY1v87qxC/wUdX5O1qDzXMP5TH3wjfpga6E=
 modernc.org/memory v1.0.1 h1:bhVo78NAdgvRD4N+b2hGnAwL5RP2+QyiEJDsX3jpeDA=
 modernc.org/memory v1.0.1/go.mod h1:NSjvC08+g3MLOpcAxQbdctcThAEX4YlJ20WWHYEhvRg=
-modernc.org/tcl v0.0.0-20210112162618-d02ee57da865 h1:lr5cbOiQUQ3aKfyl9M8YdqIeINa23tiM85mkFatGD9Q=
-modernc.org/tcl v0.0.0-20210112162618-d02ee57da865/go.mod h1:XuYnprNRD5ClgYC5JEGk+MSXwWqHdj5zFqvO88ooMoE=
+modernc.org/tcl v0.0.0-20210116154350-d39acab84afa h1:ilAz/AYRgGYZegGa9Ejqs+zjGwr1t7QxI06IReiw1OM=
+modernc.org/tcl v0.0.0-20210116154350-d39acab84afa/go.mod h1:xEeGkvTg7q54vNvl7HiEDNtl3jeV1x7A5pGttMkAKkc=