[Bug c/46477] New: GCC doesn't understand %c in asm instruction with -mcmodel=large

[_kirpichev_ at mail dot ru]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46477

           Summary: GCC doesn't understand %c in asm instruction with
                    -mcmodel=large
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: _kirpich...@mail.ru


Hi,

I'm trying to compile the following code snippet:
#ifdef CONFIG_X86_32
# define __BUG_C0   "2:\t.long 1b, %c0\n"
#else
# define __BUG_C0   "2:\t.long 1b - 2b, %c0 - 2b\n"
#endif

#define BUG()                           \
        do {                                \
                asm volatile("1:\tud2\n"                \
                                ".pushsection __bug_table,\"a\"\n"     \
                                __BUG_C0                   \
                                "\t.word %c1, 0\n"             \
                                "\t.org 2b+%c2\n"              \
                                ".popsection"              \
                                : : "i" (__FILE__), "i" (__LINE__),    \
                                "i" (10*sizeof(int)));       \
        } while (0)

int main()
{
        BUG();
}

And everything is ok until -mcmodel=large is used.

When I'm trying to use -mcmodel=large the following error appears:

main.c:24:9: error: invalid 'asm': operand is neither a constant nor a
condition code, invalid operand code 'c'

gcc -dumpversion
4.5


BTW, if I change %c on %P then everything is ok and generated code looks the
same, but I didn't find any documentation about %P.