g++    -c -o syscall.o syscall.cc
g++    -c -o old_syscall.o old_syscall.cc
old_syscall.cc: In function `int set_ipv4root_rev0(long unsigned int)':
old_syscall.cc:37: warning: asm operand 0 probably doesn't match constraints
old_syscall.cc:37: inconsistent operand constraints in an `asm'
old_syscall.cc: In function `int set_ipv4root_rev1(long unsigned int, long 
   unsigned int)':
old_syscall.cc:38: warning: asm operand 0 probably doesn't match constraints
old_syscall.cc:38: inconsistent operand constraints in an `asm'
old_syscall.cc: In function `int set_ipv4root_rev2(long unsigned int*, int, 
   long unsigned int)':
old_syscall.cc:39: warning: asm operand 0 probably doesn't match constraints
old_syscall.cc:39: inconsistent operand constraints in an `asm'
old_syscall.cc: In function `int set_ipv4root_rev3(long unsigned int*, int, 
   long unsigned int, long unsigned int*)':
old_syscall.cc:40: warning: asm operand 0 probably doesn't match constraints
old_syscall.cc:40: inconsistent operand constraints in an `asm'
old_syscall.cc: In function `int new_s_context_rev0(int, int, int)':
old_syscall.cc:48: warning: asm operand 0 probably doesn't match constraints
old_syscall.cc:48: inconsistent operand constraints in an `asm'
old_syscall.cc: In function `int new_s_context_rev1(int, int*, int, int)':
old_syscall.cc:49: warning: asm operand 0 probably doesn't match constraints
old_syscall.cc:49: inconsistent operand constraints in an `asm'
old_syscall.cc: In function `int set_ctxlimit(int, long int)':
old_syscall.cc:55: warning: asm operand 0 probably doesn't match constraints
old_syscall.cc:55: inconsistent operand constraints in an `asm'
old_syscall.cc: In function `int chrootsafe(const char*)':
old_syscall.cc:61: warning: asm operand 0 probably doesn't match constraints
old_syscall.cc:61: inconsistent operand constraints in an `asm'
make: *** [old_syscall.o] Error 1