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* [Bug preprocessor/31182] New: preprocessor doubles up digits in token pasting
@ 2007-03-15 3:30 dsb at boyski dot com
2007-03-15 4:35 ` [Bug preprocessor/31182] " fang at csl dot cornell dot edu
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: dsb at boyski dot com @ 2007-03-15 3:30 UTC (permalink / raw)
To: gcc-bugs
Very simple test case:
% cat /tmp/ff.s
#define Concat(a,b) a##b
Concat(foo,2.2)
% cpp -P /tmp/ff.s
foo22.2
Notice that what should be "2.2" becomes "22.2". Also note that this occurs
while preprocessing assembler (-x assembler-with-cpp) code.
--
Summary: preprocessor doubles up digits in token pasting
Product: gcc
Version: 4.1.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: preprocessor
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: dsb at boyski dot com
GCC build triplet: i386-pc-solaris2.10
GCC host triplet: i386-pc-solaris2.10
GCC target triplet: i386-pc-solaris2.10
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31182
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug preprocessor/31182] preprocessor doubles up digits in token pasting
2007-03-15 3:30 [Bug preprocessor/31182] New: preprocessor doubles up digits in token pasting dsb at boyski dot com
@ 2007-03-15 4:35 ` fang at csl dot cornell dot edu
2007-03-15 12:42 ` dsb at boyski dot com
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: fang at csl dot cornell dot edu @ 2007-03-15 4:35 UTC (permalink / raw)
To: gcc-bugs
------- 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...
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31182
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug preprocessor/31182] preprocessor doubles up digits in token pasting
2007-03-15 3:30 [Bug preprocessor/31182] New: preprocessor doubles up digits in token pasting dsb at boyski dot com
2007-03-15 4:35 ` [Bug preprocessor/31182] " fang at csl dot cornell dot edu
@ 2007-03-15 12:42 ` dsb at boyski dot com
2007-03-15 12:44 ` dsb at boyski dot com
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: dsb at boyski dot com @ 2007-03-15 12:42 UTC (permalink / raw)
To: gcc-bugs
------- 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'.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31182
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug preprocessor/31182] preprocessor doubles up digits in token pasting
2007-03-15 3:30 [Bug preprocessor/31182] New: preprocessor doubles up digits in token pasting dsb at boyski dot com
2007-03-15 4:35 ` [Bug preprocessor/31182] " fang at csl dot cornell dot edu
2007-03-15 12:42 ` dsb at boyski dot com
@ 2007-03-15 12:44 ` dsb at boyski dot com
2007-03-15 16:28 ` tromey at gcc dot gnu dot org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: dsb at boyski dot com @ 2007-03-15 12:44 UTC (permalink / raw)
To: gcc-bugs
------- 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)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31182
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug preprocessor/31182] preprocessor doubles up digits in token pasting
2007-03-15 3:30 [Bug preprocessor/31182] New: preprocessor doubles up digits in token pasting dsb at boyski dot com
` (2 preceding siblings ...)
2007-03-15 12:44 ` dsb at boyski dot com
@ 2007-03-15 16:28 ` tromey at gcc dot gnu dot org
2007-03-16 12:58 ` dsb at boyski dot com
2007-04-25 0:29 ` tromey at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: tromey at gcc dot gnu dot org @ 2007-03-15 16:28 UTC (permalink / raw)
To: gcc-bugs
------- 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.
--
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
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug preprocessor/31182] preprocessor doubles up digits in token pasting
2007-03-15 3:30 [Bug preprocessor/31182] New: preprocessor doubles up digits in token pasting dsb at boyski dot com
` (3 preceding siblings ...)
2007-03-15 16:28 ` tromey at gcc dot gnu dot org
@ 2007-03-16 12:58 ` dsb at boyski dot com
2007-04-25 0:29 ` tromey at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: dsb at boyski dot com @ 2007-03-16 12:58 UTC (permalink / raw)
To: gcc-bugs
------- 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
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31182
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug preprocessor/31182] preprocessor doubles up digits in token pasting
2007-03-15 3:30 [Bug preprocessor/31182] New: preprocessor doubles up digits in token pasting dsb at boyski dot com
` (4 preceding siblings ...)
2007-03-16 12:58 ` dsb at boyski dot com
@ 2007-04-25 0:29 ` tromey at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: tromey at gcc dot gnu dot org @ 2007-04-25 0:29 UTC (permalink / raw)
To: gcc-bugs
------- 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 ***
--
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
^ permalink raw reply [flat|nested] 7+ messages in thread
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2007-03-15 3:30 [Bug preprocessor/31182] New: preprocessor doubles up digits in token pasting dsb at boyski dot com
2007-03-15 4:35 ` [Bug preprocessor/31182] " fang at csl dot cornell dot edu
2007-03-15 12:42 ` dsb at boyski dot com
2007-03-15 12:44 ` dsb at boyski dot com
2007-03-15 16:28 ` tromey at gcc dot gnu dot org
2007-03-16 12:58 ` dsb at boyski dot com
2007-04-25 0:29 ` tromey at gcc dot gnu dot org
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