(gdb) n 134 a = b = c = 0xdeadbeef + ((uint32_t)length) + initval; (gdb) n (gdb) p a $30 = <value optimized out> (gdb) p b $31 = <value optimized out> (gdb) p c $32 = 3735928563
How can gdb optimize out my value??
It didn't. Your compiler did, but there's still a debug symbol for the original variable name.