10a200e560
When casting an ideal to complex{64,128}, for example during the evaluation of var a = complex64(0) / 1e-50 we want the compiler to report a division-by-zero error if a divisor would be zero after the cast. We already do this for floats; for example var b = float32(0) / 1e-50 generates a 'division by zero' error at compile time (because float32(1e-50) is zero, and the cast is done before performing the division). There's no such check in the path for complex{64,128} expressions, and no cast is performed before the division in the evaluation of var a = complex64(0) / 1e-50 which compiles just fine. This patch changes the convlit1 function so that complex ideals components (real and imag) are correctly truncated to float{32,64} when doing an ideal -> complex{64, 128} cast. Fixes #11674 Change-Id: Ic5f8ee3c8cfe4c3bb0621481792c96511723d151 Reviewed-on: https://go-review.googlesource.com/37891 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Robert Griesemer <gri@golang.org> |
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