malloc/calloc 调用上奇怪的 SIGABORT
用 gdb 运行我的程序我得到这个：
fem.o: malloc.c:3096: SYSMALLOC: 断言 `(old_top == (((mbinptr) (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (结构 malloc_chunk, fd)))) &&旧大小 == 0) || ((unsigned long) (old_size) >= (无符号长)((((__builtin_offsetof （结构malloc_chunk， fd_nextsize))+((2 * (sizeof(size_t))) - 1)) & ~((2 * (sizeof(size_t))) - 1))) && ((old_top)->大小&0x1)&& ((unsigned long)old_end & 页掩码) == 0)' 失败。程序收到信号SIGABRT， 流产了。 0xb7fe1424 中 __kernel_vsyscall()
我发现此代码后出现此错误：
problem->y0 = (double *)calloc(n_tot, sizeof(double));
问题是一个以 double *y0 作为成员的结构。
之前在函数中，我这样做了
problem = (fem_problem *)calloc(1, sizeof(fem_problem));
，但没有收到任何错误，也没有问题== NULL。
有什么建议吗？
ADD：
我已经检查过n_tot的内容，它有正确的数字
running my program with gdb I get this:
fem.o: malloc.c:3096: sYSMALLOc:
Assertion `(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.Program received signal SIGABRT,
Aborted. 0xb7fe1424 in
__kernel_vsyscall ()
I found that this error arises after this code:
problem->y0 = (double *)calloc(n_tot, sizeof(double));
problem is a structure which has double *y0 as member.
Previously in the function, I do this
problem = (fem_problem *)calloc(1, sizeof(fem_problem));
and I don't get any error neither problem == NULL.
some suggestion?
ADD:
I already checked the content of n_tot, it has the right number
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（2）
该断言告诉您堆内部数据结构已损坏，可能是由于您在某个时刻在已分配块的边界之外进行了写入。尝试使用 valgrind 运行，看看它是否可以告诉您哪里出了问题。
The assertion is telling you that the heap internal data structures are corrupt, probably due to your writing outside the bounds of an allocated block at some point. Try running with valgrind to see if it can tell you where you're going wrong.
可能存在许多问题，例如：
n_tot的值可能是垃圾。您已在已分配块之外进行写入，并且这样做破坏了用于维护堆的数据结构。
There could be any number of problems, for example:
The value of
n_totcould be garbage.You have written outside of an allocated block, and in doing so you have destroyed data structures used to maintain the heap.