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| From | Philipp Klaus Krause <pkk@spth.de> |
| Newsgroups | comp.compilers |
| Subject | Re: Why do some versions of bison require {} here? |
| Date | Thu, 3 Jan 2019 09:15:25 +0100 |
| Organization | solani.org |
| Lines | 16 |
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| Keywords | yacc |
| Posted-Date | 03 Jan 2019 20:15:04 EST |
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Am 01.01.19 um 10:55 schrieb Philipp Klaus Krause:
> [Adding the empty action forces bison to reduce the rule rather than just
> shifting and saving state for later. I couldn't guess why that would matter
> in this case. Are there precedence rules? With your change does the grammar compile
> cleanly or does it have conflicts? -John]
>
Well, for me (but I don't see the problem without the {} on my system -
GNU bison 3.2.2 on Debian GNU/Linux), both with and without {}, when using
LANG=C bison -W -y -d SDCC.y
I get 7 warning about "empty rule without %empty", but no other
warnings. The people reporting issues seem to be using GNU bison on
Microsoft Windows.
Philipp
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Why do some versions of bison require {} here? Philipp Klaus Krause <pkk@spth.de> - 2019-01-01 10:55 +0100
Re: Why do some versions of bison require {} here? Kaz Kylheku <157-073-9834@kylheku.com> - 2019-01-02 19:29 +0000
Re: Why do some versions of bison require {} here? Philipp Klaus Krause <pkk@spth.de> - 2019-01-03 09:15 +0100
Re: Why do some versions of bison require {} here? Kaz Kylheku <157-073-9834@kylheku.com> - 2019-01-04 03:02 +0000
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