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Re: [Patch] hard-widen-limits [was Re: Syntax tables for multiple modes

From: Andreas Schwab
Subject: Re: [Patch] hard-widen-limits [was Re: Syntax tables for multiple modes [was: bug#22983: syntax-ppss returns wrong result.]]
Date: Sun, 24 Apr 2016 18:19:34 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.93 (gnu/linux)

Vitalie Spinu <address@hidden> writes:

>>> On Sun, Apr 24 2016 15:20, Andreas Schwab wrote:
>> Vitalie Spinu <address@hidden> writes:
>>> @@ -1692,7 +1692,7 @@ exec_byte_code (Lisp_Object bytestr, Lisp_Object 
>>> vector, Lisp_Object maxdepth,
>>>     CASE (Bwiden):
>>> -     PUSH (Fwiden ());
>>> +     TOP = Fwiden (TOP);
>> You are clobbering the stack here.  Instead of pushing a new value you
>> are overwriting an unrelated value on the stack.
> I don't think so. I pick an argument form the stack and put the return value 
> in
> it. This is what all one-arg functions do in bytecode.c.

But nobody is pushing that argument.


Andreas Schwab, address@hidden
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