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malloc.c：3074错误？

[英]malloc.c:3074 error?

原文 2009-07-08 13:13:49 9 1 c/ memory/ malloc

When I write a C program, I encountered a problem that is as follows: 当我编写C程序时，遇到了如下问题：

malloc.c:3074: sYSMALLOc: Assertion (old_top == (((mbinptr) (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct malloc_chunk, fd)))) && old_size == 0) || malloc.c：3074：sYSMALLOc：声明（old_top ==（（（（mbinptr）（（（（char *）＆（（av）-> bins [（（1）-1）* 2]）））-__builtin_offsetof（struct malloc_chunk ，fd））））&& old_size == 0）|| ((unsigned long) (old_size) >= (unsigned long)((((__builtin_offsetof (struct malloc_chunk, fd_nextsize))+((2 * (sizeof(size_t))) - 1)) & ~((2 * (sizeof(size_t))) - 1))) && ((old_top)->size & 0x1) && ((unsigned long)old_end & pagemask) == 0) failed. （（（unsigned long）（old_size）> =（unsigned long）（（（（（（__ builtin_offsetof（struct malloc_chunk，fd_nextsize））+（（2 *（sizeof（size_t）））-1））＆〜（（2 *（sizeof （size_t）））-1）））&&（（（old_top）-> size＆0x1）&&（（（unsigned long）old_end＆pagemask）== 0）失败。

Please help me to fix it, thanks in advance! 请帮助我修复它，在此先感谢！

1 个解决方案

It seems like the administration kept for memory allocation has been corrupted. 似乎为内存分配保留的管理已损坏。 My guess would be that you have something like a buffer overflow somewhere before this error occurs. 我的猜测是在此错误发生之前，您在某处有缓冲区溢出之类的东西。

As the error is a result of an earlier problem (assuming I'm right), this can be a somewhat difficult problem to fix. 由于该错误是先前问题的结果（假设我是对的），因此修复起来可能会有些困难。 Perhaps a tool like valgrind can help you to detect incorrect writes to memory. 也许像valgrind这样的工具可以帮助您检测对内存的不正确写入。 If you have a small program that demonstrates the problem, I would suggest adding that code to your question. 如果您有一个演示该问题的小程序，建议您将该代码添加到您的问题中。