Closed
Description
What version of Go are you using (go version)?
$ go version go version go1.20.6 darwin/amd64
Does this issue reproduce with the latest release?
Yes
What operating system and processor architecture are you using (go env)?
go env Output
$ go env GO111MODULE="" GOARCH="amd64" GOBIN="" GOCACHE="/Users/Will/Library/Caches/go-build" GOENV="/Users/Will/Library/Application Support/go/env" GOEXE="" GOEXPERIMENT="" GOFLAGS="" GOHOSTARCH="amd64" GOHOSTOS="darwin" GOINSECURE="" GOMODCACHE="/Users/Will/Library/Application Support/go/pkg/mod" GONOPROXY="github.com/FrontRowXP,github.com/frontrowxp" GONOSUMDB="github.com/FrontRowXP,github.com/frontrowxp" GOOS="darwin" GOPATH="/Users/Will/Library/Application Support/go" GOPRIVATE="github.com/FrontRowXP,github.com/frontrowxp" GOPROXY="https://proxy.golang.org,direct" GOROOT="/usr/local/Cellar/go/1.20.6/libexec" GOSUMDB="sum.golang.org" GOTMPDIR="" GOTOOLDIR="/usr/local/Cellar/go/1.20.6/libexec/pkg/tool/darwin_amd64" GOVCS="" GOVERSION="go1.20.6" GCCGO="gccgo" GOAMD64="v1" AR="ar" CC="cc" CXX="c++" CGO_ENABLED="1" GOMOD="/Users/Will/Developer/work/backend/go.mod" GOWORK="" CGO_CFLAGS="-O2 -g" CGO_CPPFLAGS="" CGO_CXXFLAGS="-O2 -g" CGO_FFLAGS="-O2 -g" CGO_LDFLAGS="-O2 -g" PKG_CONFIG="pkg-config" GOGCCFLAGS="-fPIC -arch x86_64 -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/bx/qk0phsxd265fqj512dnnpg080000gn/T/go-build4191768799=/tmp/go-build -gno-record-gcc-switches -fno-common"
What did you do?
A:
var channelID int = ...
statement := `SELECT column from table WHERE id = $1`
channel_name := ""
err := db.QueryRow(statement, channelID).Scan(&channel_name)B:
var userID, username string = ...
statement := `UPDATE users SET external_id=$1 WHERE username=$2 RETURNING id;`
lastInsertId := 0
err := db.QueryRow(statement, userID, username).Scan(&lastInsertId)What did you expect to see?
No panic.
What did you see instead?
--- FAIL: [...] (0.00s)
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x20 pc=0x156dd73]
goroutine 6 [running]:
testing.tRunner.func1.2({0x160a5a0, 0x1cf6e10})
/usr/local/Cellar/go/1.20.6/libexec/src/testing/testing.go:1526 +0x24e
testing.tRunner.func1()
/usr/local/Cellar/go/1.20.6/libexec/src/testing/testing.go:1529 +0x39f
panic({0x160a5a0, 0x1cf6e10})
/usr/local/Cellar/go/1.20.6/libexec/src/runtime/panic.go:884 +0x213
database/sql.(*DB).conn(0x0, {0x194ad90, 0xc000026088}, 0x1)
/usr/local/Cellar/go/1.20.6/libexec/src/database/sql/sql.go:1282 +0x53
database/sql.(*DB).query(0xc000367bf0?, {0x194ad90, 0xc000026088}, {0x16b75d5, 0x2b}, {0xc0003cfca8, 0x1, 0x1}, 0x0?)
/usr/local/Cellar/go/1.20.6/libexec/src/database/sql/sql.go:1721 +0x5d
database/sql.(*DB).QueryContext.func1(0x0?)
/usr/local/Cellar/go/1.20.6/libexec/src/database/sql/sql.go:1704 +0x55
database/sql.(*DB).retry(0x0?, 0xc0003cfb18)
/usr/local/Cellar/go/1.20.6/libexec/src/database/sql/sql.go:1538 +0x47
database/sql.(*DB).QueryContext(0x2a595bd8?, {0x194ad90?, 0xc000026088?}, {0x16b75d5?, 0xc0002b3440?}, {0xc0003cfca8?, 0xc0003cfbd8?, 0x100e067?})
/usr/local/Cellar/go/1.20.6/libexec/src/database/sql/sql.go:1703 +0xcc
database/sql.(*DB).QueryRowContext(...)
/usr/local/Cellar/go/1.20.6/libexec/src/database/sql/sql.go:1804
database/sql.(*DB).QueryRow(0x19467c0?, {0x16b75d5?, 0x0?}, {0xc0003cfca8?, 0xc0003689c0?, 0xc000070c50?})
/usr/local/Cellar/go/1.20.6/libexec/src/database/sql/sql.go:1818 +0x4a
[...]
FAIL [...] 0.199s
database/sql/sql.go:1282:
// conn returns a newly-opened or cached *driverConn.
func (db *DB) conn(ctx context.Context, strategy connReuseStrategy) (*driverConn, error) {
db.mu.Lock() // 1282
if db.closed {