View Compilation Error

0_0_6623809_31848.cpp: In function `BI computeValue(Node*)':
0_0_6623809_31848.cpp:50: error: `typeof' undeclared (first use this function)
0_0_6623809_31848.cpp:50: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6623809_31848.cpp:50: error: expected `;' before "e"
0_0_6623809_31848.cpp:50: error: `e' undeclared (first use this function)
0_0_6623809_31848.cpp:63: error: expected `;' before "c"
0_0_6623809_31848.cpp:63: error: `c' undeclared (first use this function)