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cmd/compile: never report "truncated to real" for toint calls
Whoever called toint() is expecting the {Mpint, Mpflt, Mpcplx} arg to be converted to an integer expression, so it never makes sense to report an error as "constant X truncated to real". Fixes #11580 Change-Id: Iadcb105f0802358a7f77188c2b1e63fe80c5580c Reviewed-on: https://go-review.googlesource.com/34638 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Robert Griesemer <gri@golang.org> Run-TryBot: Robert Griesemer <gri@golang.org>
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@ -458,12 +458,10 @@ func toint(v Val) Val {
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case *Mpcplx:
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i := new(Mpint)
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if i.SetFloat(&u.Real) < 0 {
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if i.SetFloat(&u.Real) < 0 || u.Imag.CmpFloat64(0) != 0 {
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yyerror("constant %v%vi truncated to integer", fconv(&u.Real, FmtSharp), fconv(&u.Imag, FmtSharp|FmtSign))
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}
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if u.Imag.CmpFloat64(0) != 0 {
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yyerror("constant %v%vi truncated to real", fconv(&u.Real, FmtSharp), fconv(&u.Imag, FmtSharp|FmtSign))
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}
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v.U = i
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}
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@ -13,6 +13,6 @@ var c []int = []int{2.0: 2}
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var d []int = []int{-2.0: 2} // ERROR "must be non-negative integer constant"
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var e []int = []int{3 + 0i: 3}
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var f []int = []int{3i: 3} // ERROR "truncated to real"
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var f []int = []int{3i: 3} // ERROR "truncated to integer"
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var g []int = []int{"a": 4} // ERROR "must be non-negative integer constant"
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