http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52998
Bug #: 52998
Summary: caret and -ftrack-macro-expansion don't mix well
Classification: Unclassified
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: preprocessor
AssignedTo: [email protected]
ReportedBy: [email protected]
With GCC 4.8 and -ftrack-macro-expansion, we get:
manuel@gcc12:~$ cat macro-caret.c
#define OPERATE(OPRD1, OPRT, OPRD2) \
OPRD1 OPRT OPRD2;
#define SHIFTL(A,B) \
OPERATE (A,<<,B)
#define MULT(A) \
SHIFTL (A,1)
void
g ()
{
MULT (1.0);// 1.0 << 1; <-- so this is an error.
}
manuel@gcc12:~$ ~/trunk/186353M/build/gcc/cc1plus macro-caret.c
-ftrack-macro-expansion
macro-caret.c:8:13: error: invalid operands of types ‘double’ and ‘int’ to
binary ‘operator<<’
SHIFTL (A,1)
^
macro-caret.c:2:14: note: in expansion of macro 'OPERATE'
OPRD1 OPRT OPRD2;
^
macro-caret.c:5:3: note: expanded from here
OPERATE (A,<<,B)
^
macro-caret.c:5:17: note: in expansion of macro 'SHIFTL'
OPERATE (A,<<,B)
^
macro-caret.c:8:3: note: expanded from here
SHIFTL (A,1)
^
macro-caret.c:8:13: note: in expansion of macro 'MULT'
SHIFTL (A,1)
^
macro-caret.c:13:3: note: expanded from here
MULT (1.0);// 1.0 << 1; <-- so this is an error.
^
And with GCC:
manuel@gcc12:~$ ~/trunk/186353M/build/gcc/cc1 macro-caret.c
-ftrack-macro-expansion
macro-caret.c: In function ‘g’:
macro-caret.c:5:14: error: invalid operands to binary << (have ‘double’ and
‘int’)
OPERATE (A,<<,B)
^
macro-caret.c:2:9: note: in expansion of macro 'OPERATE'
OPRD1 OPRT OPRD2;
^
macro-caret.c:5:3: note: expanded from here
OPERATE (A,<<,B)
^
macro-caret.c:5:14: note: in expansion of macro 'SHIFTL'
OPERATE (A,<<,B)
^
macro-caret.c:8:3: note: expanded from here
SHIFTL (A,1)
^
macro-caret.c:8:3: note: in expansion of macro 'MULT'
SHIFTL (A,1)
^
macro-caret.c:13:3: note: expanded from here
MULT (1.0);// 1.0 << 1; <-- so this is an error.
^
Note that cc1plus prints the error at 8:13 and cc1 at 5:14. Without
-ftrac-macro-expansion, both give 13:3.
