github.com/huandu/go@v0.0.0-20151114150818-04e615e41150/test/fixedbugs/issue11326.go (about)

     1  // errorcheck
     2  
     3  // Copyright 2015 The Go Authors.  All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  
     7  package main
     8  
     9  import "fmt"
    10  
    11  func main() {
    12  	var g = 1e81391777742999 // ERROR "exponent too large"
    13  	// The next should only cause a problem when converted to float64
    14  	// by the assignment, but instead the compiler rejects it outright,
    15  	// rather than mishandle it. Specifically, when handled, 'var h' prints:
    16  	//	issue11326.go:N: constant 0.93342e+536870911 overflows float64
    17  	// The rejection of 'var i' is just insurance. It seems to work correctly.
    18  	// See golang.org/issue/11326.
    19  	// var h = 1e2147483647     // should be "1.00000e+2147483647 overflows float64"
    20  	var h = 1e2147483647 // ERROR "exponent too large"
    21  	// var i = 1e214748364  // should be "1.00000e\+214748364 overflows float64"
    22  	var i = 1e214748364 // ERROR "exponent too large"
    23  	var j = 1e21474836  // ERROR "1.00000e\+21474836 overflows float64"
    24  	var k = 1e2147483   // ERROR "1.00000e\+2147483 overflows float64"
    25  	var l = 1e214748    // ERROR "1.00000e\+214748 overflows float64"
    26  	var m = 1e21474     // ERROR "1.00000e\+21474 overflows float64"
    27  	fmt.Println(g)
    28  }