單項(xiàng)選擇題
從安全編程的角度看,下面代碼是否有問(wèn)題?若有是第幾行:()line1:char*function1(){line2:char*buffer1=malloc(8000);line3:if(buffer1)gets(buffer1);line4:returnbuffer1;line5:}line6:intmain(){line7:char*ptr=function();line8:if(ptr)free(ptr);line9:exit(0);line10:}
A.第2行
B.第3行
C.第9行
D.沒(méi)有錯(cuò)誤