+++ /dev/null
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// This file contains tests for the printf checker.
-
-package a
-
-import (
- "fmt"
- logpkg "log" // renamed to make it harder to see
- "math"
- "os"
- "testing"
- "unsafe" // just for test case printing unsafe.Pointer
-
- // For testing printf-like functions from external package.
- // "github.com/foobar/externalprintf"
- "b"
-)
-
-func UnsafePointerPrintfTest() {
- var up unsafe.Pointer
- fmt.Printf("%p, %x %X", up, up, up)
-}
-
-// Error methods that do not satisfy the Error interface and should be checked.
-type errorTest1 int
-
-func (errorTest1) Error(...interface{}) string {
- return "hi"
-}
-
-type errorTest2 int // Analogous to testing's *T type.
-func (errorTest2) Error(...interface{}) {
-}
-
-type errorTest3 int
-
-func (errorTest3) Error() { // No return value.
-}
-
-type errorTest4 int
-
-func (errorTest4) Error() int { // Different return type.
- return 3
-}
-
-type errorTest5 int
-
-func (errorTest5) error() { // niladic; don't complain if no args (was bug)
-}
-
-// This function never executes, but it serves as a simple test for the program.
-// Test with make test.
-func PrintfTests() {
- var b bool
- var i int
- var r rune
- var s string
- var x float64
- var p *int
- var imap map[int]int
- var fslice []float64
- var c complex64
- var err error
- // Some good format/argtypes
- fmt.Printf("")
- fmt.Printf("%b %b %b", 3, i, x)
- fmt.Printf("%c %c %c %c", 3, i, 'x', r)
- fmt.Printf("%d %d %d", 3, i, imap)
- fmt.Printf("%e %e %e %e", 3e9, x, fslice, c)
- fmt.Printf("%E %E %E %E", 3e9, x, fslice, c)
- fmt.Printf("%f %f %f %f", 3e9, x, fslice, c)
- fmt.Printf("%F %F %F %F", 3e9, x, fslice, c)
- fmt.Printf("%g %g %g %g", 3e9, x, fslice, c)
- fmt.Printf("%G %G %G %G", 3e9, x, fslice, c)
- fmt.Printf("%b %b %b %b", 3e9, x, fslice, c)
- fmt.Printf("%o %o", 3, i)
- fmt.Printf("%O %O", 3, i)
- fmt.Printf("%p", p)
- fmt.Printf("%q %q %q %q", 3, i, 'x', r)
- fmt.Printf("%s %s %s", "hi", s, []byte{65})
- fmt.Printf("%t %t", true, b)
- fmt.Printf("%T %T", 3, i)
- fmt.Printf("%U %U", 3, i)
- fmt.Printf("%v %v", 3, i)
- fmt.Printf("%x %x %x %x %x %x %x", 3, i, "hi", s, x, c, fslice)
- fmt.Printf("%X %X %X %X %X %X %X", 3, i, "hi", s, x, c, fslice)
- fmt.Printf("%.*s %d %g", 3, "hi", 23, 2.3)
- fmt.Printf("%s", &stringerv)
- fmt.Printf("%v", &stringerv)
- fmt.Printf("%T", &stringerv)
- fmt.Printf("%s", &embeddedStringerv)
- fmt.Printf("%v", &embeddedStringerv)
- fmt.Printf("%T", &embeddedStringerv)
- fmt.Printf("%v", notstringerv)
- fmt.Printf("%T", notstringerv)
- fmt.Printf("%q", stringerarrayv)
- fmt.Printf("%v", stringerarrayv)
- fmt.Printf("%s", stringerarrayv)
- fmt.Printf("%v", notstringerarrayv)
- fmt.Printf("%T", notstringerarrayv)
- fmt.Printf("%d", new(fmt.Formatter))
- fmt.Printf("%*%", 2) // Ridiculous but allowed.
- fmt.Printf("%s", interface{}(nil)) // Nothing useful we can say.
- fmt.Printf("%a", interface{}(new(BoolFormatter))) // Could be a fmt.Formatter.
-
- fmt.Printf("%g", 1+2i)
- fmt.Printf("%#e %#E %#f %#F %#g %#G", 1.2, 1.2, 1.2, 1.2, 1.2, 1.2) // OK since Go 1.9
- // Some bad format/argTypes
- fmt.Printf("%b", "hi") // want "Printf format %b has arg \x22hi\x22 of wrong type string"
- fmt.Printf("%t", c) // want "Printf format %t has arg c of wrong type complex64"
- fmt.Printf("%t", 1+2i) // want `Printf format %t has arg 1 \+ 2i of wrong type complex128`
- fmt.Printf("%c", 2.3) // want "Printf format %c has arg 2.3 of wrong type float64"
- fmt.Printf("%d", 2.3) // want "Printf format %d has arg 2.3 of wrong type float64"
- fmt.Printf("%e", "hi") // want `Printf format %e has arg "hi" of wrong type string`
- fmt.Printf("%E", true) // want "Printf format %E has arg true of wrong type bool"
- fmt.Printf("%f", "hi") // want "Printf format %f has arg \x22hi\x22 of wrong type string"
- fmt.Printf("%F", 'x') // want "Printf format %F has arg 'x' of wrong type rune"
- fmt.Printf("%g", "hi") // want `Printf format %g has arg "hi" of wrong type string`
- fmt.Printf("%g", imap) // want `Printf format %g has arg imap of wrong type map\[int\]int`
- fmt.Printf("%G", i) // want "Printf format %G has arg i of wrong type int"
- fmt.Printf("%o", x) // want "Printf format %o has arg x of wrong type float64"
- fmt.Printf("%O", x) // want "Printf format %O has arg x of wrong type float64"
- fmt.Printf("%p", nil) // want "Printf format %p has arg nil of wrong type untyped nil"
- fmt.Printf("%p", 23) // want "Printf format %p has arg 23 of wrong type int"
- fmt.Printf("%q", x) // want "Printf format %q has arg x of wrong type float64"
- fmt.Printf("%s", b) // want "Printf format %s has arg b of wrong type bool"
- fmt.Printf("%s", byte(65)) // want `Printf format %s has arg byte\(65\) of wrong type byte`
- fmt.Printf("%t", 23) // want "Printf format %t has arg 23 of wrong type int"
- fmt.Printf("%U", x) // want "Printf format %U has arg x of wrong type float64"
- fmt.Printf("%x", nil) // want "Printf format %x has arg nil of wrong type untyped nil"
- fmt.Printf("%s", stringerv) // want "Printf format %s has arg stringerv of wrong type a.ptrStringer"
- fmt.Printf("%t", stringerv) // want "Printf format %t has arg stringerv of wrong type a.ptrStringer"
- fmt.Printf("%s", embeddedStringerv) // want "Printf format %s has arg embeddedStringerv of wrong type a.embeddedStringer"
- fmt.Printf("%t", embeddedStringerv) // want "Printf format %t has arg embeddedStringerv of wrong type a.embeddedStringer"
- fmt.Printf("%q", notstringerv) // want "Printf format %q has arg notstringerv of wrong type a.notstringer"
- fmt.Printf("%t", notstringerv) // want "Printf format %t has arg notstringerv of wrong type a.notstringer"
- fmt.Printf("%t", stringerarrayv) // want "Printf format %t has arg stringerarrayv of wrong type a.stringerarray"
- fmt.Printf("%t", notstringerarrayv) // want "Printf format %t has arg notstringerarrayv of wrong type a.notstringerarray"
- fmt.Printf("%q", notstringerarrayv) // want "Printf format %q has arg notstringerarrayv of wrong type a.notstringerarray"
- fmt.Printf("%d", BoolFormatter(true)) // want `Printf format %d has arg BoolFormatter\(true\) of wrong type a.BoolFormatter`
- fmt.Printf("%z", FormatterVal(true)) // correct (the type is responsible for formatting)
- fmt.Printf("%d", FormatterVal(true)) // correct (the type is responsible for formatting)
- fmt.Printf("%s", nonemptyinterface) // correct (the type is responsible for formatting)
- fmt.Printf("%.*s %d %6g", 3, "hi", 23, 'x') // want "Printf format %6g has arg 'x' of wrong type rune"
- fmt.Println() // not an error
- fmt.Println("%s", "hi") // want "Println call has possible formatting directive %s"
- fmt.Println("%v", "hi") // want "Println call has possible formatting directive %v"
- fmt.Println("%T", "hi") // want "Println call has possible formatting directive %T"
- fmt.Println("0.0%") // correct (trailing % couldn't be a formatting directive)
- fmt.Printf("%s", "hi", 3) // want "Printf call needs 1 arg but has 2 args"
- _ = fmt.Sprintf("%"+("s"), "hi", 3) // want "Sprintf call needs 1 arg but has 2 args"
- fmt.Printf("%s%%%d", "hi", 3) // correct
- fmt.Printf("%08s", "woo") // correct
- fmt.Printf("% 8s", "woo") // correct
- fmt.Printf("%.*d", 3, 3) // correct
- fmt.Printf("%.*d x", 3, 3, 3, 3) // want "Printf call needs 2 args but has 4 args"
- fmt.Printf("%.*d x", "hi", 3) // want `Printf format %.*d uses non-int "hi" as argument of \*`
- fmt.Printf("%.*d x", i, 3) // correct
- fmt.Printf("%.*d x", s, 3) // want `Printf format %.\*d uses non-int s as argument of \*`
- fmt.Printf("%*% x", 0.22) // want `Printf format %\*% uses non-int 0.22 as argument of \*`
- fmt.Printf("%q %q", multi()...) // ok
- fmt.Printf("%#q", `blah`) // ok
- fmt.Printf("%#b", 3) // ok
- // printf("now is the time", "buddy") // no error "printf call has arguments but no formatting directives"
- Printf("now is the time", "buddy") // want "Printf call has arguments but no formatting directives"
- Printf("hi") // ok
- const format = "%s %s\n"
- Printf(format, "hi", "there")
- Printf(format, "hi") // want "Printf format %s reads arg #2, but call has 1 arg$"
- Printf("%s %d %.3v %q", "str", 4) // want "Printf format %.3v reads arg #3, but call has 2 args"
- f := new(ptrStringer)
- f.Warn(0, "%s", "hello", 3) // want "Warn call has possible formatting directive %s"
- f.Warnf(0, "%s", "hello", 3) // want "Warnf call needs 1 arg but has 2 args"
- f.Warnf(0, "%r", "hello") // want "Warnf format %r has unknown verb r"
- f.Warnf(0, "%#s", "hello") // want "Warnf format %#s has unrecognized flag #"
- f.Warn2(0, "%s", "hello", 3) // want "Warn2 call has possible formatting directive %s"
- f.Warnf2(0, "%s", "hello", 3) // want "Warnf2 call needs 1 arg but has 2 args"
- f.Warnf2(0, "%r", "hello") // want "Warnf2 format %r has unknown verb r"
- f.Warnf2(0, "%#s", "hello") // want "Warnf2 format %#s has unrecognized flag #"
- f.Wrap(0, "%s", "hello", 3) // want "Wrap call has possible formatting directive %s"
- f.Wrapf(0, "%s", "hello", 3) // want "Wrapf call needs 1 arg but has 2 args"
- f.Wrapf(0, "%r", "hello") // want "Wrapf format %r has unknown verb r"
- f.Wrapf(0, "%#s", "hello") // want "Wrapf format %#s has unrecognized flag #"
- f.Wrap2(0, "%s", "hello", 3) // want "Wrap2 call has possible formatting directive %s"
- f.Wrapf2(0, "%s", "hello", 3) // want "Wrapf2 call needs 1 arg but has 2 args"
- f.Wrapf2(0, "%r", "hello") // want "Wrapf2 format %r has unknown verb r"
- f.Wrapf2(0, "%#s", "hello") // want "Wrapf2 format %#s has unrecognized flag #"
- fmt.Printf("%#s", FormatterVal(true)) // correct (the type is responsible for formatting)
- Printf("d%", 2) // want "Printf format % is missing verb at end of string"
- Printf("%d", percentDV)
- Printf("%d", &percentDV)
- Printf("%d", notPercentDV) // want "Printf format %d has arg notPercentDV of wrong type a.notPercentDStruct"
- Printf("%d", ¬PercentDV) // want `Printf format %d has arg ¬PercentDV of wrong type \*a.notPercentDStruct`
- Printf("%p", ¬PercentDV) // Works regardless: we print it as a pointer.
- Printf("%q", &percentDV) // want `Printf format %q has arg &percentDV of wrong type \*a.percentDStruct`
- Printf("%s", percentSV)
- Printf("%s", &percentSV)
- // Good argument reorderings.
- Printf("%[1]d", 3)
- Printf("%[1]*d", 3, 1)
- Printf("%[2]*[1]d", 1, 3)
- Printf("%[2]*.[1]*[3]d", 2, 3, 4)
- fmt.Fprintf(os.Stderr, "%[2]*.[1]*[3]d", 2, 3, 4) // Use Fprintf to make sure we count arguments correctly.
- // Bad argument reorderings.
- Printf("%[xd", 3) // want `Printf format %\[xd is missing closing \]`
- Printf("%[x]d x", 3) // want `Printf format has invalid argument index \[x\]`
- Printf("%[3]*s x", "hi", 2) // want `Printf format has invalid argument index \[3\]`
- _ = fmt.Sprintf("%[3]d x", 2) // want `Sprintf format has invalid argument index \[3\]`
- Printf("%[2]*.[1]*[3]d x", 2, "hi", 4) // want `Printf format %\[2]\*\.\[1\]\*\[3\]d uses non-int \x22hi\x22 as argument of \*`
- Printf("%[0]s x", "arg1") // want `Printf format has invalid argument index \[0\]`
- Printf("%[0]d x", 1) // want `Printf format has invalid argument index \[0\]`
- // Something that satisfies the error interface.
- var e error
- fmt.Println(e.Error()) // ok
- // Something that looks like an error interface but isn't, such as the (*T).Error method
- // in the testing package.
- var et1 *testing.T
- et1.Error() // ok
- et1.Error("hi") // ok
- et1.Error("%d", 3) // want "Error call has possible formatting directive %d"
- et1.Errorf("%s", 1) // want "Errorf format %s has arg 1 of wrong type int"
- var et3 errorTest3
- et3.Error() // ok, not an error method.
- var et4 errorTest4
- et4.Error() // ok, not an error method.
- var et5 errorTest5
- et5.error() // ok, not an error method.
- // Interfaces can be used with any verb.
- var iface interface {
- ToTheMadness() bool // Method ToTheMadness usually returns false
- }
- fmt.Printf("%f", iface) // ok: fmt treats interfaces as transparent and iface may well have a float concrete type
- // Can't print a function.
- Printf("%d", someFunction) // want "Printf format %d arg someFunction is a func value, not called"
- Printf("%v", someFunction) // want "Printf format %v arg someFunction is a func value, not called"
- Println(someFunction) // want "Println arg someFunction is a func value, not called"
- Printf("%p", someFunction) // ok: maybe someone wants to see the pointer
- Printf("%T", someFunction) // ok: maybe someone wants to see the type
- // Bug: used to recur forever.
- Printf("%p %x", recursiveStructV, recursiveStructV.next)
- Printf("%p %x", recursiveStruct1V, recursiveStruct1V.next) // want `Printf format %x has arg recursiveStruct1V\.next of wrong type \*a\.RecursiveStruct2`
- Printf("%p %x", recursiveSliceV, recursiveSliceV)
- Printf("%p %x", recursiveMapV, recursiveMapV)
- // Special handling for Log.
- math.Log(3) // OK
- var t *testing.T
- t.Log("%d", 3) // want "Log call has possible formatting directive %d"
- t.Logf("%d", 3)
- t.Logf("%d", "hi") // want `Logf format %d has arg "hi" of wrong type string`
-
- Errorf(1, "%d", 3) // OK
- Errorf(1, "%d", "hi") // want `Errorf format %d has arg "hi" of wrong type string`
-
- // Multiple string arguments before variadic args
- errorf("WARNING", "foobar") // OK
- errorf("INFO", "s=%s, n=%d", "foo", 1) // OK
- errorf("ERROR", "%d") // want "errorf format %d reads arg #1, but call has 0 args"
-
- var tb testing.TB
- tb.Errorf("%s", 1) // want "Errorf format %s has arg 1 of wrong type int"
-
- // Printf from external package
- // externalprintf.Printf("%d", 42) // OK
- // externalprintf.Printf("foobar") // OK
- // level := 123
- // externalprintf.Logf(level, "%d", 42) // OK
- // externalprintf.Errorf(level, level, "foo %q bar", "foobar") // OK
- // externalprintf.Logf(level, "%d") // no error "Logf format %d reads arg #1, but call has 0 args"
- // var formatStr = "%s %s"
- // externalprintf.Sprintf(formatStr, "a", "b") // OK
- // externalprintf.Logf(level, formatStr, "a", "b") // OK
-
- // user-defined Println-like functions
- ss := &someStruct{}
- ss.Log(someFunction, "foo") // OK
- ss.Error(someFunction, someFunction) // OK
- ss.Println() // OK
- ss.Println(1.234, "foo") // OK
- ss.Println(1, someFunction) // no error "Println arg someFunction is a func value, not called"
- ss.log(someFunction) // OK
- ss.log(someFunction, "bar", 1.33) // OK
- ss.log(someFunction, someFunction) // no error "log arg someFunction is a func value, not called"
-
- // indexed arguments
- Printf("%d %[3]d %d %[2]d x", 1, 2, 3, 4) // OK
- Printf("%d %[0]d %d %[2]d x", 1, 2, 3, 4) // want `Printf format has invalid argument index \[0\]`
- Printf("%d %[3]d %d %[-2]d x", 1, 2, 3, 4) // want `Printf format has invalid argument index \[-2\]`
- Printf("%d %[3]d %d %[2234234234234]d x", 1, 2, 3, 4) // want `Printf format has invalid argument index \[2234234234234\]`
- Printf("%d %[3]d %-10d %[2]d x", 1, 2, 3) // want "Printf format %-10d reads arg #4, but call has 3 args"
- Printf("%[1][3]d x", 1, 2) // want `Printf format %\[1\]\[ has unknown verb \[`
- Printf("%[1]d x", 1, 2) // OK
- Printf("%d %[3]d %d %[2]d x", 1, 2, 3, 4, 5) // OK
-
- // wrote Println but meant Fprintln
- Printf("%p\n", os.Stdout) // OK
- Println(os.Stdout, "hello") // want "Println does not take io.Writer but has first arg os.Stdout"
-
- Printf(someString(), "hello") // OK
-
- // Printf wrappers in package log should be detected automatically
- logpkg.Fatal("%d", 1) // want "Fatal call has possible formatting directive %d"
- logpkg.Fatalf("%d", "x") // want `Fatalf format %d has arg "x" of wrong type string`
- logpkg.Fatalln("%d", 1) // want "Fatalln call has possible formatting directive %d"
- logpkg.Panic("%d", 1) // want "Panic call has possible formatting directive %d"
- logpkg.Panicf("%d", "x") // want `Panicf format %d has arg "x" of wrong type string`
- logpkg.Panicln("%d", 1) // want "Panicln call has possible formatting directive %d"
- logpkg.Print("%d", 1) // want "Print call has possible formatting directive %d"
- logpkg.Printf("%d", "x") // want `Printf format %d has arg "x" of wrong type string`
- logpkg.Println("%d", 1) // want "Println call has possible formatting directive %d"
-
- // Methods too.
- var l *logpkg.Logger
- l.Fatal("%d", 1) // want "Fatal call has possible formatting directive %d"
- l.Fatalf("%d", "x") // want `Fatalf format %d has arg "x" of wrong type string`
- l.Fatalln("%d", 1) // want "Fatalln call has possible formatting directive %d"
- l.Panic("%d", 1) // want "Panic call has possible formatting directive %d"
- l.Panicf("%d", "x") // want `Panicf format %d has arg "x" of wrong type string`
- l.Panicln("%d", 1) // want "Panicln call has possible formatting directive %d"
- l.Print("%d", 1) // want "Print call has possible formatting directive %d"
- l.Printf("%d", "x") // want `Printf format %d has arg "x" of wrong type string`
- l.Println("%d", 1) // want "Println call has possible formatting directive %d"
-
- // Issue 26486
- dbg("", 1) // no error "call has arguments but no formatting directive"
-
- // %w
- _ = fmt.Errorf("%w", err)
- _ = fmt.Errorf("%#w", err)
- _ = fmt.Errorf("%[2]w %[1]s", "x", err)
- _ = fmt.Errorf("%[2]w %[1]s", e, "x") // want `Errorf format %\[2\]w has arg "x" of wrong type string`
- _ = fmt.Errorf("%w", "x") // want `Errorf format %w has arg "x" of wrong type string`
- _ = fmt.Errorf("%w %w", err, err) // want `Errorf call has more than one error-wrapping directive %w`
- fmt.Printf("%w", err) // want `Printf call has error-wrapping directive %w`
- Errorf(0, "%w", err)
-}
-
-func someString() string { return "X" }
-
-type someStruct struct{}
-
-// Log is non-variadic user-define Println-like function.
-// Calls to this func must be skipped when checking
-// for Println-like arguments.
-func (ss *someStruct) Log(f func(), s string) {}
-
-// Error is variadic user-define Println-like function.
-// Calls to this func mustn't be checked for Println-like arguments,
-// since variadic arguments type isn't interface{}.
-func (ss *someStruct) Error(args ...func()) {}
-
-// Println is variadic user-defined Println-like function.
-// Calls to this func must be checked for Println-like arguments.
-func (ss *someStruct) Println(args ...interface{}) {}
-
-// log is variadic user-defined Println-like function.
-// Calls to this func must be checked for Println-like arguments.
-func (ss *someStruct) log(f func(), args ...interface{}) {}
-
-// A function we use as a function value; it has no other purpose.
-func someFunction() {}
-
-// Printf is used by the test so we must declare it.
-func Printf(format string, args ...interface{}) { // want Printf:"printfWrapper"
- fmt.Printf(format, args...)
-}
-
-// Println is used by the test so we must declare it.
-func Println(args ...interface{}) { // want Println:"printWrapper"
- fmt.Println(args...)
-}
-
-// printf is used by the test so we must declare it.
-func printf(format string, args ...interface{}) { // want printf:"printfWrapper"
- fmt.Printf(format, args...)
-}
-
-// Errorf is used by the test for a case in which the first parameter
-// is not a format string.
-func Errorf(i int, format string, args ...interface{}) { // want Errorf:"errorfWrapper"
- _ = fmt.Errorf(format, args...)
-}
-
-// errorf is used by the test for a case in which the function accepts multiple
-// string parameters before variadic arguments
-func errorf(level, format string, args ...interface{}) { // want errorf:"errorfWrapper"
- _ = fmt.Errorf(format, args...)
-}
-
-// multi is used by the test.
-func multi() []interface{} {
- panic("don't call - testing only")
-}
-
-type stringer int
-
-func (stringer) String() string { return "string" }
-
-type ptrStringer float64
-
-var stringerv ptrStringer
-
-func (*ptrStringer) String() string {
- return "string"
-}
-
-func (p *ptrStringer) Warn2(x int, args ...interface{}) string { // want Warn2:"printWrapper"
- return p.Warn(x, args...)
-}
-
-func (p *ptrStringer) Warnf2(x int, format string, args ...interface{}) string { // want Warnf2:"printfWrapper"
- return p.Warnf(x, format, args...)
-}
-
-// During testing -printf.funcs flag matches Warn.
-func (*ptrStringer) Warn(x int, args ...interface{}) string {
- return "warn"
-}
-
-// During testing -printf.funcs flag matches Warnf.
-func (*ptrStringer) Warnf(x int, format string, args ...interface{}) string {
- return "warnf"
-}
-
-func (p *ptrStringer) Wrap2(x int, args ...interface{}) string { // want Wrap2:"printWrapper"
- return p.Wrap(x, args...)
-}
-
-func (p *ptrStringer) Wrapf2(x int, format string, args ...interface{}) string { // want Wrapf2:"printfWrapper"
- return p.Wrapf(x, format, args...)
-}
-
-func (*ptrStringer) Wrap(x int, args ...interface{}) string { // want Wrap:"printWrapper"
- return fmt.Sprint(args...)
-}
-
-func (*ptrStringer) Wrapf(x int, format string, args ...interface{}) string { // want Wrapf:"printfWrapper"
- return fmt.Sprintf(format, args...)
-}
-
-func (*ptrStringer) BadWrap(x int, args ...interface{}) string {
- return fmt.Sprint(args) // want "missing ... in args forwarded to print-like function"
-}
-
-func (*ptrStringer) BadWrapf(x int, format string, args ...interface{}) string {
- return fmt.Sprintf(format, args) // want "missing ... in args forwarded to printf-like function"
-}
-
-func (*ptrStringer) WrapfFalsePositive(x int, arg1 string, arg2 ...interface{}) string {
- return fmt.Sprintf("%s %v", arg1, arg2)
-}
-
-type embeddedStringer struct {
- foo string
- ptrStringer
- bar int
-}
-
-var embeddedStringerv embeddedStringer
-
-type notstringer struct {
- f float64
-}
-
-var notstringerv notstringer
-
-type stringerarray [4]float64
-
-func (stringerarray) String() string {
- return "string"
-}
-
-var stringerarrayv stringerarray
-
-type notstringerarray [4]float64
-
-var notstringerarrayv notstringerarray
-
-var nonemptyinterface = interface {
- f()
-}(nil)
-
-// A data type we can print with "%d".
-type percentDStruct struct {
- a int
- b []byte
- c *float64
-}
-
-var percentDV percentDStruct
-
-// A data type we cannot print correctly with "%d".
-type notPercentDStruct struct {
- a int
- b []byte
- c bool
-}
-
-var notPercentDV notPercentDStruct
-
-// A data type we can print with "%s".
-type percentSStruct struct {
- a string
- b []byte
- C stringerarray
-}
-
-var percentSV percentSStruct
-
-type recursiveStringer int
-
-func (s recursiveStringer) String() string {
- _ = fmt.Sprintf("%d", s)
- _ = fmt.Sprintf("%#v", s)
- _ = fmt.Sprintf("%v", s) // want "Sprintf format %v with arg s causes recursive String method call"
- _ = fmt.Sprintf("%v", &s) // want "Sprintf format %v with arg &s causes recursive String method call"
- _ = fmt.Sprintf("%T", s) // ok; does not recursively call String
- return fmt.Sprintln(s) // want "Sprintln arg s causes recursive call to String method"
-}
-
-type recursivePtrStringer int
-
-func (p *recursivePtrStringer) String() string {
- _ = fmt.Sprintf("%v", *p)
- _ = fmt.Sprint(&p) // ok; prints address
- return fmt.Sprintln(p) // want "Sprintln arg p causes recursive call to String method"
-}
-
-type recursiveError int
-
-func (s recursiveError) Error() string {
- _ = fmt.Sprintf("%d", s)
- _ = fmt.Sprintf("%#v", s)
- _ = fmt.Sprintf("%v", s) // want "Sprintf format %v with arg s causes recursive Error method call"
- _ = fmt.Sprintf("%v", &s) // want "Sprintf format %v with arg &s causes recursive Error method call"
- _ = fmt.Sprintf("%T", s) // ok; does not recursively call Error
- return fmt.Sprintln(s) // want "Sprintln arg s causes recursive call to Error method"
-}
-
-type recursivePtrError int
-
-func (p *recursivePtrError) Error() string {
- _ = fmt.Sprintf("%v", *p)
- _ = fmt.Sprint(&p) // ok; prints address
- return fmt.Sprintln(p) // want "Sprintln arg p causes recursive call to Error method"
-}
-
-type recursiveStringerAndError int
-
-func (s recursiveStringerAndError) String() string {
- _ = fmt.Sprintf("%d", s)
- _ = fmt.Sprintf("%#v", s)
- _ = fmt.Sprintf("%v", s) // want "Sprintf format %v with arg s causes recursive String method call"
- _ = fmt.Sprintf("%v", &s) // want "Sprintf format %v with arg &s causes recursive String method call"
- _ = fmt.Sprintf("%T", s) // ok; does not recursively call String
- return fmt.Sprintln(s) // want "Sprintln arg s causes recursive call to String method"
-}
-
-func (s recursiveStringerAndError) Error() string {
- _ = fmt.Sprintf("%d", s)
- _ = fmt.Sprintf("%#v", s)
- _ = fmt.Sprintf("%v", s) // want "Sprintf format %v with arg s causes recursive Error method call"
- _ = fmt.Sprintf("%v", &s) // want "Sprintf format %v with arg &s causes recursive Error method call"
- _ = fmt.Sprintf("%T", s) // ok; does not recursively call Error
- return fmt.Sprintln(s) // want "Sprintln arg s causes recursive call to Error method"
-}
-
-type recursivePtrStringerAndError int
-
-func (p *recursivePtrStringerAndError) String() string {
- _ = fmt.Sprintf("%v", *p)
- _ = fmt.Sprint(&p) // ok; prints address
- return fmt.Sprintln(p) // want "Sprintln arg p causes recursive call to String method"
-}
-
-func (p *recursivePtrStringerAndError) Error() string {
- _ = fmt.Sprintf("%v", *p)
- _ = fmt.Sprint(&p) // ok; prints address
- return fmt.Sprintln(p) // want "Sprintln arg p causes recursive call to Error method"
-}
-
-// implements a String() method but with non-matching return types
-type nonStringerWrongReturn int
-
-func (s nonStringerWrongReturn) String() (string, error) {
- return "", fmt.Errorf("%v", s)
-}
-
-// implements a String() method but with non-matching arguments
-type nonStringerWrongArgs int
-
-func (s nonStringerWrongArgs) String(i int) string {
- return fmt.Sprintf("%d%v", i, s)
-}
-
-type cons struct {
- car int
- cdr *cons
-}
-
-func (cons *cons) String() string {
- if cons == nil {
- return "nil"
- }
- _ = fmt.Sprint(cons.cdr) // don't want "recursive call" diagnostic
- return fmt.Sprintf("(%d . %v)", cons.car, cons.cdr) // don't want "recursive call" diagnostic
-}
-
-type BoolFormatter bool
-
-func (*BoolFormatter) Format(fmt.State, rune) {
-}
-
-// Formatter with value receiver
-type FormatterVal bool
-
-func (FormatterVal) Format(fmt.State, rune) {
-}
-
-type RecursiveSlice []RecursiveSlice
-
-var recursiveSliceV = &RecursiveSlice{}
-
-type RecursiveMap map[int]RecursiveMap
-
-var recursiveMapV = make(RecursiveMap)
-
-type RecursiveStruct struct {
- next *RecursiveStruct
-}
-
-var recursiveStructV = &RecursiveStruct{}
-
-type RecursiveStruct1 struct {
- next *RecursiveStruct2
-}
-
-type RecursiveStruct2 struct {
- next *RecursiveStruct1
-}
-
-var recursiveStruct1V = &RecursiveStruct1{}
-
-type unexportedInterface struct {
- f interface{}
-}
-
-// Issue 17798: unexported ptrStringer cannot be formatted.
-type unexportedStringer struct {
- t ptrStringer
-}
-type unexportedStringerOtherFields struct {
- s string
- t ptrStringer
- S string
-}
-
-// Issue 17798: unexported error cannot be formatted.
-type unexportedError struct {
- e error
-}
-type unexportedErrorOtherFields struct {
- s string
- e error
- S string
-}
-
-type errorer struct{}
-
-func (e errorer) Error() string { return "errorer" }
-
-type unexportedCustomError struct {
- e errorer
-}
-
-type errorInterface interface {
- error
- ExtraMethod()
-}
-
-type unexportedErrorInterface struct {
- e errorInterface
-}
-
-func UnexportedStringerOrError() {
- fmt.Printf("%s", unexportedInterface{"foo"}) // ok; prints {foo}
- fmt.Printf("%s", unexportedInterface{3}) // ok; we can't see the problem
-
- us := unexportedStringer{}
- fmt.Printf("%s", us) // want "Printf format %s has arg us of wrong type a.unexportedStringer"
- fmt.Printf("%s", &us) // want "Printf format %s has arg &us of wrong type [*]a.unexportedStringer"
-
- usf := unexportedStringerOtherFields{
- s: "foo",
- S: "bar",
- }
- fmt.Printf("%s", usf) // want "Printf format %s has arg usf of wrong type a.unexportedStringerOtherFields"
- fmt.Printf("%s", &usf) // want "Printf format %s has arg &usf of wrong type [*]a.unexportedStringerOtherFields"
-
- ue := unexportedError{
- e: &errorer{},
- }
- fmt.Printf("%s", ue) // want "Printf format %s has arg ue of wrong type a.unexportedError"
- fmt.Printf("%s", &ue) // want "Printf format %s has arg &ue of wrong type [*]a.unexportedError"
-
- uef := unexportedErrorOtherFields{
- s: "foo",
- e: &errorer{},
- S: "bar",
- }
- fmt.Printf("%s", uef) // want "Printf format %s has arg uef of wrong type a.unexportedErrorOtherFields"
- fmt.Printf("%s", &uef) // want "Printf format %s has arg &uef of wrong type [*]a.unexportedErrorOtherFields"
-
- uce := unexportedCustomError{
- e: errorer{},
- }
- fmt.Printf("%s", uce) // want "Printf format %s has arg uce of wrong type a.unexportedCustomError"
-
- uei := unexportedErrorInterface{}
- fmt.Printf("%s", uei) // want "Printf format %s has arg uei of wrong type a.unexportedErrorInterface"
- fmt.Println("foo\n", "bar") // not an error
-
- fmt.Println("foo\n") // want "Println arg list ends with redundant newline"
- fmt.Println("foo\\n") // not an error
- fmt.Println(`foo\n`) // not an error
-
- intSlice := []int{3, 4}
- fmt.Printf("%s", intSlice) // want `Printf format %s has arg intSlice of wrong type \[\]int`
- nonStringerArray := [1]unexportedStringer{{}}
- fmt.Printf("%s", nonStringerArray) // want `Printf format %s has arg nonStringerArray of wrong type \[1\]a.unexportedStringer`
- fmt.Printf("%s", []stringer{3, 4}) // not an error
- fmt.Printf("%s", [2]stringer{3, 4}) // not an error
-}
-
-// TODO: Disable complaint about '0' for Go 1.10. To be fixed properly in 1.11.
-// See issues 23598 and 23605.
-func DisableErrorForFlag0() {
- fmt.Printf("%0t", true)
-}
-
-// Issue 26486.
-func dbg(format string, args ...interface{}) {
- if format == "" {
- format = "%v"
- }
- fmt.Printf(format, args...)
-}
-
-func PointersToCompoundTypes() {
- stringSlice := []string{"a", "b"}
- fmt.Printf("%s", &stringSlice) // not an error
-
- intSlice := []int{3, 4}
- fmt.Printf("%s", &intSlice) // want `Printf format %s has arg &intSlice of wrong type \*\[\]int`
-
- stringArray := [2]string{"a", "b"}
- fmt.Printf("%s", &stringArray) // not an error
-
- intArray := [2]int{3, 4}
- fmt.Printf("%s", &intArray) // want `Printf format %s has arg &intArray of wrong type \*\[2\]int`
-
- stringStruct := struct{ F string }{"foo"}
- fmt.Printf("%s", &stringStruct) // not an error
-
- intStruct := struct{ F int }{3}
- fmt.Printf("%s", &intStruct) // want `Printf format %s has arg &intStruct of wrong type \*struct{F int}`
-
- stringMap := map[string]string{"foo": "bar"}
- fmt.Printf("%s", &stringMap) // not an error
-
- intMap := map[int]int{3: 4}
- fmt.Printf("%s", &intMap) // want `Printf format %s has arg &intMap of wrong type \*map\[int\]int`
-
- type T2 struct {
- X string
- }
- type T1 struct {
- X *T2
- }
- fmt.Printf("%s\n", T1{&T2{"x"}}) // want `Printf format %s has arg T1{&T2{.x.}} of wrong type a\.T1`
-}
-
-// Printf wrappers from external package
-func externalPackage() {
- b.Wrapf("%s", 1) // want "Wrapf format %s has arg 1 of wrong type int"
- b.Wrap("%s", 1) // want "Wrap call has possible formatting directive %s"
- b.NoWrap("%s", 1)
- b.Wrapf2("%s", 1) // want "Wrapf2 format %s has arg 1 of wrong type int"
-}
-
-func PointerVerbs() {
- // Use booleans, so that we don't just format the elements like in
- // PointersToCompoundTypes. Bools can only be formatted with verbs like
- // %t and %v, and none of the ones below.
- ptr := new(bool)
- slice := []bool{}
- array := [3]bool{}
- map_ := map[bool]bool{}
- chan_ := make(chan bool)
- func_ := func(bool) {}
-
- // %p, %b, %d, %o, %O, %x, and %X all support pointers.
- fmt.Printf("%p", ptr)
- fmt.Printf("%b", ptr)
- fmt.Printf("%d", ptr)
- fmt.Printf("%o", ptr)
- fmt.Printf("%O", ptr)
- fmt.Printf("%x", ptr)
- fmt.Printf("%X", ptr)
-
- // %p, %b, %d, %o, %O, %x, and %X all support channels.
- fmt.Printf("%p", chan_)
- fmt.Printf("%b", chan_)
- fmt.Printf("%d", chan_)
- fmt.Printf("%o", chan_)
- fmt.Printf("%O", chan_)
- fmt.Printf("%x", chan_)
- fmt.Printf("%X", chan_)
-
- // %p is the only one that supports funcs.
- fmt.Printf("%p", func_)
- fmt.Printf("%b", func_) // want `Printf format %b arg func_ is a func value, not called`
- fmt.Printf("%d", func_) // want `Printf format %d arg func_ is a func value, not called`
- fmt.Printf("%o", func_) // want `Printf format %o arg func_ is a func value, not called`
- fmt.Printf("%O", func_) // want `Printf format %O arg func_ is a func value, not called`
- fmt.Printf("%x", func_) // want `Printf format %x arg func_ is a func value, not called`
- fmt.Printf("%X", func_) // want `Printf format %X arg func_ is a func value, not called`
-
- // %p is the only one that supports all slices, by printing the address
- // of the 0th element.
- fmt.Printf("%p", slice) // supported; address of 0th element
- fmt.Printf("%b", slice) // want `Printf format %b has arg slice of wrong type \[\]bool`
-
- fmt.Printf("%d", slice) // want `Printf format %d has arg slice of wrong type \[\]bool`
-
- fmt.Printf("%o", slice) // want `Printf format %o has arg slice of wrong type \[\]bool`
- fmt.Printf("%O", slice) // want `Printf format %O has arg slice of wrong type \[\]bool`
-
- fmt.Printf("%x", slice) // want `Printf format %x has arg slice of wrong type \[\]bool`
- fmt.Printf("%X", slice) // want `Printf format %X has arg slice of wrong type \[\]bool`
-
- // None support arrays.
- fmt.Printf("%p", array) // want `Printf format %p has arg array of wrong type \[3\]bool`
- fmt.Printf("%b", array) // want `Printf format %b has arg array of wrong type \[3\]bool`
- fmt.Printf("%d", array) // want `Printf format %d has arg array of wrong type \[3\]bool`
- fmt.Printf("%o", array) // want `Printf format %o has arg array of wrong type \[3\]bool`
- fmt.Printf("%O", array) // want `Printf format %O has arg array of wrong type \[3\]bool`
- fmt.Printf("%x", array) // want `Printf format %x has arg array of wrong type \[3\]bool`
- fmt.Printf("%X", array) // want `Printf format %X has arg array of wrong type \[3\]bool`
-
- // %p is the only one that supports all maps.
- fmt.Printf("%p", map_) // supported; address of 0th element
- fmt.Printf("%b", map_) // want `Printf format %b has arg map_ of wrong type map\[bool\]bool`
-
- fmt.Printf("%d", map_) // want `Printf format %d has arg map_ of wrong type map\[bool\]bool`
-
- fmt.Printf("%o", map_) // want `Printf format %o has arg map_ of wrong type map\[bool\]bool`
- fmt.Printf("%O", map_) // want `Printf format %O has arg map_ of wrong type map\[bool\]bool`
-
- fmt.Printf("%x", map_) // want `Printf format %x has arg map_ of wrong type map\[bool\]bool`
- fmt.Printf("%X", map_) // want `Printf format %X has arg map_ of wrong type map\[bool\]bool`
-}
projects / dotfiles / .git / blobdiff