--- /dev/null
+// Package pkg is amazing.
+package pkg
+
+import (
+ "fmt"
+ "math/big"
+ "os"
+ "unsafe"
+)
+
+type Error int
+
+func (Error) Error() string { return "" }
+
+func fn() {
+ 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
+ // 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("%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", 3, i, "hi", s)
+ fmt.Printf("%X %X %X %X", 3, i, "hi", s)
+ 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("%f", new(big.Float))
+ fmt.Printf("%*%", 2) // Ridiculous but allowed.
+ fmt.Printf("%s", interface{}(nil)) // Nothing useful we can say.
+
+ 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 #1 of wrong type string`
+ _ = fmt.Sprintf("%b", "hi") // want `Printf format %b has arg #1 of wrong type string`
+ fmt.Fprintf(os.Stdout, "%b", "hi") // want `Printf format %b has arg #1 of wrong type string`
+ fmt.Printf("%t", c) // want `Printf format %t has arg #1 of wrong type complex64`
+ fmt.Printf("%t", 1+2i) // want `Printf format %t has arg #1 of wrong type complex128`
+ fmt.Printf("%c", 2.3) // want `Printf format %c has arg #1 of wrong type float64`
+ fmt.Printf("%d", 2.3) // want `Printf format %d has arg #1 of wrong type float64`
+ fmt.Printf("%e", "hi") // want `Printf format %e has arg #1 of wrong type string`
+ fmt.Printf("%E", true) // want `Printf format %E has arg #1 of wrong type bool`
+ fmt.Printf("%f", "hi") // want `Printf format %f has arg #1 of wrong type string`
+ fmt.Printf("%F", 'x') // want `Printf format %F has arg #1 of wrong type rune`
+ fmt.Printf("%g", "hi") // want `Printf format %g has arg #1 of wrong type string`
+ fmt.Printf("%g", imap) // want `Printf format %g has arg #1 of wrong type map\[int\]int`
+ fmt.Printf("%G", i) // want `Printf format %G has arg #1 of wrong type int`
+ fmt.Printf("%o", x) // want `Printf format %o has arg #1 of wrong type float64`
+ fmt.Printf("%p", 23) // want `Printf format %p has arg #1 of wrong type int`
+ fmt.Printf("%q", x) // want `Printf format %q has arg #1 of wrong type float64`
+ fmt.Printf("%s", b) // want `Printf format %s has arg #1 of wrong type bool`
+ fmt.Printf("%s", byte(65)) // want `Printf format %s has arg #1 of wrong type byte`
+ fmt.Printf("%t", 23) // want `Printf format %t has arg #1 of wrong type int`
+ fmt.Printf("%U", x) // want `Printf format %U has arg #1 of wrong type float64`
+ fmt.Printf("%X", 2.3)
+ fmt.Printf("%X", 2+3i)
+ fmt.Printf("%s", stringerv) // want `Printf format %s has arg #1 of wrong type CheckPrintf\.ptrStringer`
+ fmt.Printf("%t", stringerv) // want `Printf format %t has arg #1 of wrong type CheckPrintf\.ptrStringer`
+ fmt.Printf("%s", embeddedStringerv) // want `Printf format %s has arg #1 of wrong type CheckPrintf\.embeddedStringer`
+ fmt.Printf("%t", embeddedStringerv) // want `Printf format %t has arg #1 of wrong type CheckPrintf\.embeddedStringer`
+ fmt.Printf("%q", notstringerv) // want `Printf format %q has arg #1 of wrong type CheckPrintf\.notstringer`
+ fmt.Printf("%t", notstringerv) // want `Printf format %t has arg #1 of wrong type CheckPrintf\.notstringer`
+ fmt.Printf("%t", stringerarrayv) // want `Printf format %t has arg #1 of wrong type CheckPrintf\.stringerarray`
+ fmt.Printf("%t", notstringerarrayv) // want `Printf format %t has arg #1 of wrong type CheckPrintf\.notstringerarray`
+ fmt.Printf("%q", notstringerarrayv) // want `Printf format %q has arg #1 of wrong type CheckPrintf\.notstringerarray`
+ fmt.Printf("%d", BoolFormatter(true)) // want `Printf format %d has arg #1 of wrong type CheckPrintf\.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 #4 of wrong type rune`
+ fmt.Printf("%s", "hi", 3) // want `Printf call needs 1 args but has 2 args`
+ fmt.Printf("%"+("s"), "hi", 3) // want `Printf call needs 1 args 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 reads non-int arg #1 as argument of \*`
+ fmt.Printf("%.*d x", i, 3) // correct
+ fmt.Printf("%.*d x", s, 3) // want `Printf format %\.\*d reads non-int arg #1 as argument of \*`
+ fmt.Printf("%*% x", 0.22) // want `Printf format %\*% reads non-int arg #1 as argument of \*`
+ fmt.Printf("%q %q", multi()...) // ok
+ fmt.Printf("%#q", `blah`) // ok
+ const format = "%s %s\n"
+ fmt.Printf(format, "hi", "there")
+ fmt.Printf(format, "hi") // want `Printf format %s reads arg #2, but call has only 1 args`
+ fmt.Printf("%s %d %.3v %q", "str", 4) // want `Printf format %\.3v reads arg #3, but call has only 2 args`
+
+ fmt.Printf("%#s", FormatterVal(true)) // correct (the type is responsible for formatting)
+ fmt.Printf("d%", 2) // want `couldn't parse format string`
+ fmt.Printf("%d", percentDV)
+ fmt.Printf("%d", &percentDV)
+ fmt.Printf("%d", notPercentDV) // want `Printf format %d has arg #1 of wrong type CheckPrintf\.notPercentDStruct`
+ fmt.Printf("%d", ¬PercentDV) // want `Printf format %d has arg #1 of wrong type \*CheckPrintf\.notPercentDStruct`
+ fmt.Printf("%p", ¬PercentDV) // Works regardless: we print it as a pointer.
+ fmt.Printf("%q", &percentDV) // want `Printf format %q has arg #1 of wrong type \*CheckPrintf\.percentDStruct`
+ fmt.Printf("%s", percentSV)
+ fmt.Printf("%s", &percentSV)
+ // Good argument reorderings.
+ fmt.Printf("%[1]d", 3)
+ fmt.Printf("%[1]*d", 3, 1)
+ fmt.Printf("%[2]*[1]d", 1, 3)
+ fmt.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.
+ fmt.Printf("%[xd", 3) // want `couldn't parse format string`
+ fmt.Printf("%[x]d x", 3) // want `couldn't parse format string`
+ fmt.Printf("%[3]*s x", "hi", 2) // want `Printf format %\[3\]\*s reads arg #3, but call has only 2 args`
+ fmt.Printf("%[3]d x", 2) // want `Printf format %\[3\]d reads arg #3, but call has only 1 args`
+ fmt.Printf("%[2]*.[1]*[3]d x", 2, "hi", 4) // want `Printf format %\[2\]\*\.\[1\]\*\[3\]d reads non-int arg #2 as argument of \*`
+ fmt.Printf("%[0]s x", "arg1") // want `Printf format %\[0\]s reads invalid arg 0; indices are 1-based`
+ fmt.Printf("%[0]d x", 1) // want `Printf format %\[0\]d reads invalid arg 0; indices are 1-based`
+
+ // 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 print functions in many ways
+ fmt.Printf("%s", someFunction) // want `Printf format %s has arg #1 of wrong type func\(\)`
+ fmt.Printf("%d", someFunction) // ok: maybe someone wants to see the pointer
+ fmt.Printf("%v", someFunction) // ok: maybe someone wants to see the pointer in decimal
+ fmt.Printf("%p", someFunction) // ok: maybe someone wants to see the pointer
+ fmt.Printf("%T", someFunction) // ok: maybe someone wants to see the type
+ // Bug: used to recur forever.
+ fmt.Printf("%p %x", recursiveStructV, recursiveStructV.next)
+ fmt.Printf("%p %x", recursiveStruct1V, recursiveStruct1V.next)
+ fmt.Printf("%p %x", recursiveSliceV, recursiveSliceV)
+ //fmt.Printf("%p %x", recursiveMapV, recursiveMapV)
+
+ // indexed arguments
+ fmt.Printf("%d %[3]d %d %[2]d x", 1, 2, 3, 4) // OK
+ fmt.Printf("%d %[0]d %d %[2]d x", 1, 2, 3, 4) // want `Printf format %\[0\]d reads invalid arg 0; indices are 1-based`
+ fmt.Printf("%d %[3]d %d %[-2]d x", 1, 2, 3, 4) // want `couldn't parse format string`
+ fmt.Printf("%d %[3]d %d %[5]d x", 1, 2, 3, 4) // want `Printf format %\[5\]d reads arg #5, but call has only 4 args`
+ fmt.Printf("%d %[3]d %-10d %[2]d x", 1, 2, 3) // want `Printf format %-10d reads arg #4, but call has only 3 args`
+ fmt.Printf("%[1][3]d x", 1, 2) // want `couldn't parse format string`
+ fmt.Printf("%[1]d x", 1, 2) // OK
+ fmt.Printf("%d %[3]d %d %[2]d x", 1, 2, 3, 4, 5) // OK
+
+ fmt.Printf(someString(), "hello") // OK
+
+ // d accepts pointers as long as they're not to structs.
+ // pointers to structs are dereferenced and walked.
+ fmt.Printf("%d", &s)
+
+ // staticcheck's own checks, based on bugs in go vet; see https://github.com/golang/go/issues/27672
+ {
+
+ type T2 struct {
+ X string
+ }
+
+ type T1 struct {
+ X *T2
+ }
+ x1 := []string{"hi"}
+ t1 := T1{&T2{"hi"}}
+
+ fmt.Printf("%s\n", &x1)
+ fmt.Printf("%s\n", t1) // want `Printf format %s has arg #1 of wrong type CheckPrintf\.T1`
+ var x2 struct{ A *int }
+ fmt.Printf("%p\n", x2) // want `Printf format %p has arg #1 of wrong type struct\{A \*int\}`
+ var x3 [2]int
+ fmt.Printf("%p", x3) // want `Printf format %p has arg #1 of wrong type \[2\]int`
+
+ ue := unexportedError{nil}
+ fmt.Printf("%s", ue)
+ }
+
+ // staticcheck's own checks, based on our own bugs
+ fmt.Printf("%s", Error(0))
+ fmt.Printf("%x", unsafe.Pointer(uintptr(0)))
+}
+
+func someString() string { return "X" }
+
+// A function we use as a function value; it has no other purpose.
+func someFunction() {}
+
+// multi is used by the test.
+func multi() []interface{} {
+ return nil
+}
+
+type stringer int
+
+func (stringer) String() string { return "string" }
+
+type ptrStringer float64
+
+var stringerv ptrStringer
+
+func (*ptrStringer) String() string {
+ return "string"
+}
+
+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 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 #1 of wrong type CheckPrintf\.unexportedStringer`
+ fmt.Printf("%s", &us) // want `Printf format %s has arg #1 of wrong type \*CheckPrintf\.unexportedStringer`
+
+ usf := unexportedStringerOtherFields{
+ s: "foo",
+ S: "bar",
+ }
+ fmt.Printf("%s", usf) // want `Printf format %s has arg #1 of wrong type CheckPrintf\.unexportedStringerOtherFields`
+ fmt.Printf("%s", &usf) // want `Printf format %s has arg #1 of wrong type \*CheckPrintf\.unexportedStringerOtherFields`
+
+ intSlice := []int{3, 4}
+ fmt.Printf("%s", intSlice) // want `Printf format %s has arg #1 of wrong type \[\]int`
+ nonStringerArray := [1]unexportedStringer{{}}
+ fmt.Printf("%s", nonStringerArray) // want `Printf format %s has arg #1 of wrong type \[1\]CheckPrintf\.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...)
+}
projects / dotfiles / .git / blobdiff