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Work around missing type signature in Happy
[ghc-hetmet.git]
/
compiler
/
parser
/
Lexer.x
diff --git
a/compiler/parser/Lexer.x
b/compiler/parser/Lexer.x
index
05fe063
..
cadd56d
100644
(file)
--- a/
compiler/parser/Lexer.x
+++ b/
compiler/parser/Lexer.x
@@
-1349,11
+1349,13
@@
readNum2 is_digit base conv i = do
where read i input = do
case alexGetChar' input of
Just (c,input') | is_digit c -> do
where read i input = do
case alexGetChar' input of
Just (c,input') | is_digit c -> do
- read (i*base + conv c) input'
+ let i' = i*base + conv c
+ if i' > 0x10ffff
+ then setInput input >> lexError "numeric escape sequence out of range"
+ else read i' input'
_other -> do
_other -> do
- if i >= 0 && i <= 0x10FFFF
- then do setInput input; return (chr i)
- else lit_error input
+ setInput input; return (chr i)
+
silly_escape_chars :: [(String, Char)]
silly_escape_chars = [
silly_escape_chars :: [(String, Char)]
silly_escape_chars = [