下面提供一个C++例子,该例子有内存泄露和访问不存在地址的两个错误: 错误信息描述如下,表示访问不存在地址,第一行“Invalid write of size 4”表明什么类型错误,写数据到内存中,而该内存是不应该访问的。1066表示进程id号。如果错误的堆栈信息显示不够显示,那么可以加上选项–num-callers,再加上层级数量,比如–nu
问Valgrind错误大小为4的无效写入/读取-调试后未发现问题-CEN内存检测工具Valgrind Valgrind是运行在Linux...
malloc/free: in use at exit:内存在退出前没有释放 invalid write of size:非法写入内存,一般为数组越界 invalid read of size:非法读内存:一般为数组越界 definitely lost /possibly lost /still reachable in loss record:内存未释放 definitely:确认丢失。程序中存在内存泄露,应尽快修复。 indirectly:间接丢失。...
4),possibly lost 可能的内存泄露,仍然存在某个指针能够快速访问某块内存,但该指针指向的已经不是内存首位置 Invalid write of size 1 : 堆内存越界访问Source and destination overlap in memcpy : 内存重叠Invalid free() / delete / delete[] : 重复释放Use of uninitialised value of size 4 : 非法指针HE...
==3221== Invalid write of size 4 ==3221==at 0x40051E: main (t4.c:7) ==3221==Address 0x4c27040 is 0 bytes inside a block of size 1 alloc'd ==3221==at 0x4A06A2E: malloc (vg_replace_malloc.c:270) ==3221==by 0x400515: main (t4.c:6) ...
Invalid write of size 4:表示发现一个错误,这里显示源代码第6行有错误,这里很明显是越界了,所以显示invalid write错误 40 bytes in 1 blocks are definitely lost in loss record 1 of 1:内存泄露错误,泄漏的大小是10* sizeof(int)40byte。 LEAK summary也会显示内存泄漏的情况 ...
==13888== Using Valgrind-3.21.0 and LibVEX; rerun with -h for copyright info ==13888== Command: ./randy ==13888== ==13888== Invalid write of size 4 ==13888== at 0x109187: main (test_memcheck3.c:6) ==13888== Address 0x4aa4040 is 0 bytes inside a block of size 1 alloc'...
4.1 写入非法内存地址当访问分配的内存区域之外的空间时，valgrind会报出类似以下错误信息：Invalid write of size x 后接调用栈信息 4.2 读取非法内存地址与写入非法内存地址类似，但此时是读取而不是写入，错误信息格式为：Invalid read of size x 后接调用栈信息 4.3 读取未初始化内存区域访问未...
1. Invalid read/write of size X 这种错误通常是由于越界访问内存或者使用了未初始化的内存引起的。例如：==12345== Invalid read of size 4==12345== at 0x1234567: myFunction (myFile.c:10)==12345== by 0x1234567: main (myFile.c:20)==12345== Address 0x5a5a5a5a is not stack'd,...
==3221== Invalid write of size 4 ==3221==at 0x40051E: main (t4.c:7) ==3221==Address 0x4c27040 is 0 bytes inside a block of size 1 alloc'd ==3221==at 0x4A06A2E: malloc (vg_replace_malloc.c:270) ==3221==by 0x400515: main (t4.c:6) ...