[Bug preprocessor/7263] __extension__ keyword doesn't suppress warning on LL or ULL constants

[dodji at redhat dot com]

------- Comment #28 from dodji at gcc dot gnu dot org  2010-06-09 14:32 -------
Subject: Re:  __extension__ keyword doesn't suppress warning on LL or ULL
constants

"manu at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> writes:

>> 
>> $ ./cc1 -quiet test.c
>> While expanding macro OPERATE at test.c:2:8
>> While expanding macro SHIFTL at test.c:5:14
>> While expanding macro MULT2 at test.c:8:3
>> test.c: In function 'g':
>> test.c:13:3: error: invalid operands to binary << (have 'double' and 'int')


> Also, what are the column numbers pointing to? They don't make sense
> to me.

About this line:
>> While expanding macro OPERATE at test.c:2:8

which is about:
#define OPERATE(OPRD1, OPRT, OPRD2) \
 OPRD1 OPRT OPRD2;

Column 8 is the starting column of the OPRT token.

About this line:
>> While expanding macro SHIFTL at test.c:5:14

which is about:
#define SHIFTL(A,B) \
  OPERATE (A,<<,B)

Column 14 is the starting column of the '<<' token.

About this line:
>> While expanding macro MULT2 at test.c:8:3

which is about:
#define MULT2(A) \
  SHIFTL (A,1)

Column 3 is the starting column of the 'SHIFT' token.

> In any case, this is a huge step forward! Thanks for working on this. It would
> be an important marketing point if you manage to complete it for GCC
> 4.6.

No problem ;) Not sure it'll get into 4.6, but I'll try.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=7263