[Bug preprocessor/31182] preprocessor doubles up digits in token pasting

[tromey at gcc dot gnu dot org]

--- Comment #6 from tromey at gcc dot gnu dot org  2007-04-25 01:29 ---
This is fixed by the follow-on patch in PR 28709, see:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28709#c5


*** This bug has been marked as a duplicate of 28709 ***


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tromey at gcc dot gnu dot org changed:

   What|Removed |Added

 Status|UNCONFIRMED |RESOLVED
 Resolution||DUPLICATE


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31182

[Bug preprocessor/31182] preprocessor doubles up digits in token pasting

[dsb at boyski dot com]

--- Comment #5 from dsb at boyski dot com  2007-03-16 12:58 ---
I just downloaded the latest 4.2 snapshot (gcc-4.2-20070307) and built it but
the behavior is the same. Given that the bugfix cited there dates back to
October and that it says Known to work: 4.2.0  I assume the patch is present
here so it appears to be different from
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28709


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31182

[Bug preprocessor/31182] preprocessor doubles up digits in token pasting

[dsb at boyski dot com]

--- Comment #2 from dsb at boyski dot com  2007-03-15 12:42 ---
This is because the default behavior is to preprocess in C mode but as I
mentioned it happens in assembler mode. If you add the flag '-x
assembler-with-cpp' you should see the reported result. My test case was in a
file with a .s extension which causes cpp/gcc to infer '-x assembler-with-cpp'.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31182

[Bug preprocessor/31182] preprocessor doubles up digits in token pasting

[dsb at boyski dot com]

--- Comment #3 from dsb at boyski dot com  2007-03-15 12:44 ---
(when I said this I meant to refer to the invalid token warnings)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31182

[Bug preprocessor/31182] preprocessor doubles up digits in token pasting

[tromey at gcc dot gnu dot org]

--- Comment #4 from tromey at gcc dot gnu dot org  2007-03-15 16:28 ---
I think this is probably the same thing as bug #28709,
and most likely fixed by the same patch.


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tromey at gcc dot gnu dot org changed:

   What|Removed |Added

 CC||tromey at gcc dot gnu dot
   ||org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31182

[Bug preprocessor/31182] preprocessor doubles up digits in token pasting

[fang at csl dot cornell dot edu]

--- Comment #1 from fang at csl dot cornell dot edu  2007-03-15 04:35 
---
Subject: Re:  preprocessor doubles up digits in token
 pasting

With your example, g++ -E -

gives me:
stdin:2:1: error: pasting foo2 and 2.2 does not give a valid
preprocessing token
foo22.2

with versions 4.0.1 (powerpc-apple-darwin8)
and 4.2.0 (20070221)


while cpp -P (4.0.1) gives me
foo##2.2

and cpp -P (4.2.0) gives me
stdin:2:1: error: pasting foo and 2.2 does not give a valid
preprocessing token
foo22.2

and cpp -P -traditional (4.0.1, 4.2.0) give me
foo##2.2


Most odd...


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31182