I use valgrind-3.8.1 on c++ program, it points out some errors on gcc [closed]

 ==20628== Conditional jump or move depends on uninitialised value(s)
  8 ==20628==    at 0x4019054: ??? (in /home/opt/compiler/gcc-8.2/gcc-8.2/lib/ld-2.21.so)
  9 ==20628==    by 0x4007EF3: ??? (in /home/opt/compiler/gcc-8.2/gcc-8.2/lib/ld-2.21.so)
 10 ==20628==
 11 ==20628== Use of uninitialised value of size 8
 12 ==20628==    at 0x401910D: ??? (in /home/opt/compiler/gcc-8.2/gcc-8.2/lib/ld-2.21.so)
 13 ==20628==    by 0x4007EF3: ??? (in /home/opt/compiler/gcc-8.2/gcc-8.2/lib/ld-2.21.so)