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The language spec only requires a signed binary exponent of 16 bits for floating point constants. Permit a "exponent too large" error for larger exponents. Don't run test 11326b with gccgo, as it requires successful compilation of floating point constants with exponents that don't fit in 16 bits. Change-Id: I98688160c76864aba525a151a14aaaf86bc36a6f Reviewed-on: https://go-review.googlesource.com/c/go/+/279252 Trust: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Robert Griesemer <gri@golang.org>
32 lines
1.6 KiB
Go
32 lines
1.6 KiB
Go
// errorcheck
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// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Tests for golang.org/issue/11326.
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package main
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func main() {
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// The gc compiler implementation uses the minimally required 32bit
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// binary exponent, so these constants cannot be represented anymore
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// internally. However, the language spec does not preclude other
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// implementations from handling these. Don't check the error.
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// var _ = 1e2147483647 // "constant too large"
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// var _ = 1e646456993 // "constant too large"
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// Any implementation must be able to handle these constants at
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// compile time (even though they cannot be assigned to a float64).
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var _ = 1e646456992 // ERROR "1e\+646456992 overflows float64|floating-point constant overflow|exponent too large"
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var _ = 1e64645699 // ERROR "1e\+64645699 overflows float64|floating-point constant overflow|exponent too large"
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var _ = 1e6464569 // ERROR "1e\+6464569 overflows float64|floating-point constant overflow|exponent too large"
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var _ = 1e646456 // ERROR "1e\+646456 overflows float64|floating-point constant overflow|exponent too large"
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var _ = 1e64645 // ERROR "1e\+64645 overflows float64|floating-point constant overflow|exponent too large"
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var _ = 1e6464 // ERROR "1e\+6464 overflows float64|floating-point constant overflow"
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var _ = 1e646 // ERROR "1e\+646 overflows float64|floating-point constant overflow"
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var _ = 1e309 // ERROR "1e\+309 overflows float64|floating-point constant overflow"
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var _ = 1e308
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}
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