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Diffstat (limited to 'libgo/go/regexp/onepass.go')
| -rw-r--r-- | libgo/go/regexp/onepass.go | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libgo/go/regexp/onepass.go b/libgo/go/regexp/onepass.go index 2f3ce6f..bc47f4c 100644 --- a/libgo/go/regexp/onepass.go +++ b/libgo/go/regexp/onepass.go @@ -9,6 +9,7 @@ import ( "sort" "strings" "unicode" + "unicode/utf8" ) // "One-pass" regexp execution. @@ -55,7 +56,7 @@ func onePassPrefix(p *syntax.Prog) (prefix string, complete bool, pc uint32) { // Have prefix; gather characters. var buf strings.Builder - for iop(i) == syntax.InstRune && len(i.Rune) == 1 && syntax.Flags(i.Arg)&syntax.FoldCase == 0 { + for iop(i) == syntax.InstRune && len(i.Rune) == 1 && syntax.Flags(i.Arg)&syntax.FoldCase == 0 && i.Rune[0] != utf8.RuneError { buf.WriteRune(i.Rune[0]) pc, i = i.Out, &p.Inst[i.Out] } |