View Compilation Error

0_0_21328159_8988.cpp: In function 'void make_min(int&, const int&)':
0_0_21328159_8988.cpp:16:4: error: expected ')' before ':' token
    : "=r" (a)
    ^
0_0_21328159_8988.cpp:17:21: error: expression cannot be used as a function
    : "0" (a), "r" (b)
                     ^
0_0_21328159_8988.cpp:18:3: error: 'asm' was not declared in this scope
   );
   ^
0_0_21328159_8988.cpp: In function 'void make_max(int&, const int&)':
0_0_21328159_8988.cpp:27:4: error: expected ')' before ':' token
    : "=r" (a)
    ^
0_0_21328159_8988.cpp:28:21: error: expression cannot be used as a function
    : "0" (a), "r" (b)
                     ^
0_0_21328159_8988.cpp:29:3: error: 'asm' was not declared in this scope
   );
   ^