diff options
Diffstat (limited to 'Lib/re/_compiler.py')
| -rw-r--r-- | Lib/re/_compiler.py | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Lib/re/_compiler.py b/Lib/re/_compiler.py index d0a4c55caf6..f87712d6d6f 100644 --- a/Lib/re/_compiler.py +++ b/Lib/re/_compiler.py @@ -147,6 +147,8 @@ def _compile(code, pattern, flags): emit(0) # look ahead else: lo, hi = av[1].getwidth() + if lo > MAXCODE: + raise error("looks too much behind") if lo != hi: raise error("look-behind requires fixed-width pattern") emit(lo) # look behind @@ -547,7 +549,7 @@ def _compile_info(code, pattern, flags): else: emit(MAXCODE) prefix = prefix[:MAXCODE] - emit(min(hi, MAXCODE)) + emit(hi) # add literal prefix if prefix: emit(len(prefix)) # length |