[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] New: preprocessor doubles up digits in token pasting

[dsb at boyski dot com]

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.


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   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