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cmd/compile: accept 'i' suffix orthogonally on all numbers

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This change accepts the 'i' suffix on binary and octal integer
literals as well as hexadecimal floats. The suffix was already
accepted on decimal integers and floats.

Note that 0123i == 123i for backward-compatibility (and 09i is
valid).

See also the respective language in the spec change:
https://golang.org/cl/161098

Change-Id: I9d2d755cba36a3fa7b9e24308c73754d4568daaf
Reviewed-on: https://go-review.googlesource.com/c/162878
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Robert Griesemer 2019-02-14 17:34:29 -08:00
parent c3b49186a6
commit 4ad5537bfa
5 changed files with 58 additions and 34 deletions
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3
src/cmd/compile/internal/syntax/scanner.go
View file

@ -512,9 +512,6 @@ func (s *scanner) number(c rune) {
// suffix 'i'
if c == 'i' {
s.kind = ImagLit
if prefix != 0 && prefix != '0' {
s.error("invalid suffix 'i' on " + litname(prefix))
}
c = s.getr()
}
s.ungetr()