ensure pointer decay in inline-asm arg for i386 syscall6

this is actually a rather subtle issue: do arrays decay to pointers
when used as inline asm args? gcc says yes, but currently pcc says no.
hopefully this discrepency in pcc will be fixed, but since the
behavior is not clearly defined anywhere I can find, I'm using an
explicit operation to cause the decay to occur.

diff --git a/arch/i386/syscall_arch.h b/arch/i386/syscall_arch.h
index 2d64b0b..f2a8163 100644 (file)
--- a/arch/i386/syscall_arch.h
+++ b/arch/i386/syscall_arch.h
@@ -50,7 +50,7 @@ static inline long __syscall5(long n, long a1, long a2, long a3, long a4, long a
 static inline long __syscall6(long n, long a1, long a2, long a3, long a4, long a5, long a6)
 {
        unsigned long __ret;
-       __asm__ __volatile__ ("push %6 ; call __vsyscall6 ; add $4,%%esp" : "=a"(__ret) : "a"(n), "d"(a1), "c"(a2), "D"(a3), "S"(a4), "g"((long[]){a5, a6}) : "memory");
+       __asm__ __volatile__ ("push %6 ; call __vsyscall6 ; add $4,%%esp" : "=a"(__ret) : "a"(n), "d"(a1), "c"(a2), "D"(a3), "S"(a4), "g"(0+(long[]){a5, a6}) : "memory");
        return __ret;
 }