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the simple fix for #14 (panic on 32-bit)

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FileSet starts `base` at 1, and adds `size+1` for every file.
  So with 32 bit ints, anything larger than 2³¹-3 overflows.
This commit is contained in:
Imuli 2018-05-12 13:14:27 -04:00
parent 983c721e83
commit d73ea72530
1 changed files with 1 additions and 1 deletions
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2
scanner/lexer.go
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@ -462,7 +462,7 @@ func Rune2Class(r rune) int {
// NewLexer the Lexer constructor // NewLexer the Lexer constructor
func NewLexer(src io.Reader, fName string) *Lexer { func NewLexer(src io.Reader, fName string) *Lexer {
file := token.NewFileSet().AddFile(fName, -1, 1<<31-1) file := token.NewFileSet().AddFile(fName, -1, 1<<31-3)
lx, err := lex.New(file, bufio.NewReader(src), lex.RuneClass(Rune2Class)) lx, err := lex.New(file, bufio.NewReader(src), lex.RuneClass(Rune2Class))
if err != nil { if err != nil {
panic(err) panic(err)