这是一种粗略的方法来找到确切的线之后，有分割故障。

定义线路记录函数

# include \ < iostream > 无效日志(int line) { Std::cout << line << Std::endl; ｝

查找并替换log函数后的所有分号为";日志(_LINE_);“ 确保在for(;;)循环中替换为函数的分号被删除

以上答案都是正确的，建议回答;如果前面提到的方法都不能使用，这个答案只是作为最后的手段。

If all else fails, you can always recompile your program with various temporary debug-print statements (e.g. fprintf(stderr, "CHECKPOINT REACHED @ %s:%i\n", __FILE__, __LINE__);) sprinkled throughout what you believe to be the relevant parts of your code. Then run the program, and observe what the was last debug-print printed just before the crash occurred -- you know your program got that far, so the crash must have happened after that point. Add or remove debug-prints, recompile, and run the test again, until you have narrowed it down to a single line of code. At that point you can fix the bug and remove all of the temporary debug-prints.

这很乏味，但它的优点是几乎可以在任何地方工作——如果由于某种原因无法访问stdout或stderr，或者如果您试图修复的bug是一个竞态条件，其行为会随着程序的时间变化而变化(因为调试打印会减慢程序并改变其时间)，则可能无法工作。

此外，你可以给valgrind一个尝试:如果你安装valgrind并运行

valgrind --leak-check=full <program>

然后它将运行您的程序并显示任何段错误的堆栈跟踪，以及任何无效的内存读写和内存泄漏。它真的很有用。

如果您有一个可重复的异常，如分割错误，您可以使用像调试器这样的工具来重现错误。

我曾经找到源代码的位置，即使是不可复制的错误。它基于微软编译器工具链。但它是基于一个想法。

Save the MAP file for each binary (DLL,EXE) before you give it to the customer. If an exception occurs, lookup the address in the MAP file and determine the function whose start address is just below the exception address. As a result you know the function, where the exception occurred. Subtract the function start address from the exception address. The result is the offset in the function. Recompile the source file containing the function with assembly listing enabled. Extract the function's assembly listing. The assembly includes the offset of each instruction in the function. Lookup the source code line, that matches the offset in the function. Evaluate the assembler code for the specific source code line. The offset points exactly the assembler instruction that caused the thrown exception. Evaluate the code of this single source code line. With a bit of experience with the compiler output you can say what caused the exception. Be aware the reason for the exception might be at a totally different location. e.g. the code dereferenced a NULL pointer, but the actual reason, why the pointer is NULL can be somewhere else.

步骤6。和7。是有益的，因为您只要求代码行。但是我建议你应该注意这一点。

我希望GCC编译器在您的平台上也有类似的环境。如果没有可用的MAP文件，请使用工具链工具来获取函数的地址。我相信ELF文件格式支持这一点。

这是一种粗略的方法来找到确切的线之后，有分割故障。

定义线路记录函数

# include \ < iostream > 无效日志(int line) { Std::cout << line << Std::endl; ｝

查找并替换log函数后的所有分号为";日志(_LINE_);“ 确保在for(;;)循环中替换为函数的分号被删除

如果你们中有人(像我一样!)也在寻找同样的问题，但是使用gfortran而不是gcc，那么现在编译器要强大得多，在使用调试器之前，您还可以尝试这些编译选项。对我来说，这准确地确定了发生错误的代码行，以及我访问的哪个变量越界导致了分割错误错误。

-O0 -g -Wall -fcheck=all -fbacktrace