View Compilation Error

0_0_14974691_10648.cpp: In function 'void go(int*, int*, int, int)':
0_0_14974691_10648.cpp:14:25: error: 'k' was not declared in this scope
         for (int _ = 0; k = g[j]; _ < 2 && k >= 0 && a[j] < b[k]; -- k, ++ _) {
                         ^
0_0_14974691_10648.cpp:14:65: error: expected ')' before ';' token
         for (int _ = 0; k = g[j]; _ < 2 && k >= 0 && a[j] < b[k]; -- k, ++ _) {
                                                                 ^
0_0_14974691_10648.cpp:14:70: error: 'k' was not declared in this scope
         for (int _ = 0; k = g[j]; _ < 2 && k >= 0 && a[j] < b[k]; -- k, ++ _) {
                                                                      ^
0_0_14974691_10648.cpp:14:76: error: '_' was not declared in this scope
         for (int _ = 0; k = g[j]; _ < 2 && k >= 0 && a[j] < b[k]; -- k, ++ _) {
                                                                            ^