尝试打印矢量时lldb断言失败

lldb assertion failure when attempting to print vector

本文关键字：lldb 断言 失败 打印      更新时间：2023-10-16

我得到错误

lldb:/home/hannes/.llvm/llvm/tools/clang/lib/AST/RecordLayoutBuilder.cpp:2271:uint64_t:：RecordLayoutBuilder:：updateExternalFieldOffset(const clang:：FieldDecl*，uint64_t(：断言`ExternalFieldOffsets.find(字段(！=ExternalFieldOffsets.end((&amp；字段没有外部偏移量"失败。中止(堆芯转储(

当我尝试打印CCD_ 1时。有人知道为什么会发生这种情况，以及如何解决吗？等效的方法在gdb中运行得很好(我宁愿使用/have来使用lldb而不是gdb有很多原因(。

我运行的是带有llvm、clang和lldb trunk的Ubuntu 12.10。

程序、构建指令和lldb命令序列：

#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
using std::for_each;
using std::begin;
using std::end;
int main() {
    std::vector<std::string> vec{"Hello","World","!"};
    for_each(begin(vec),end(vec),[](const std::string& s) {
    std::cout << s << " ";
      });
    std::cout << std::endl;
    return 0;
}

clang++ -g -c -std=c++11 main.cpp
clang++ -std=c++11 main.o -o test

lldb test 
Current executable set to 'test' (x86_64).
(lldb) break -n main
invalid command 'breakpoint -n'
(lldb) breat set -n main
error: 'breat' is not a valid command.
(lldb) break set -n main
Breakpoint 1: where = test`main + 26 at main.cpp:5, address = 0x0000000000400aea
(lldb) run
Process 24489 launched: '/home/hannes/Documents/Programming/CXX/test/test' (x86_64)
Process 24489 stopped
* thread #1: tid = 0x5fa9, 0x0000000000400aea test`main + 26 at main.cpp:5, stop reason = breakpoint 1.1
    frame #0: 0x0000000000400aea test`main + 26 at main.cpp:5
   2    #include <string>
   3    
   4    int main() {
-> 5        std::vector<std::string> vec{"Hello","World","!"};
   6        return 0;
   7    }
n
Process 24489 stopped
* thread #1: tid = 0x5fa9, 0x0000000000400c72 test`main + 418 at main.cpp:6, stop reason = step over
    frame #0: 0x0000000000400c72 test`main + 418 at main.cpp:6
   3    
   4    int main() {
   5        std::vector<std::string> vec{"Hello","World","!"};
-> 6        return 0;
   7    }
frame variable
lldb: /home/hannes/.llvm/llvm/tools/clang/lib/AST/RecordLayoutBuilder.cpp:2271: uint64_t <anonymous namespace>::RecordLayoutBuilder::updateExternalFieldOffset(const clang::FieldDecl *, uint64_t): Assertion `ExternalFieldOffsets.find(Field) != ExternalFieldOffsets.end() && "Field does not have an external offset"' failed.
Aborted (core dumped)

调试级别为10:的日志输出

Logging from function (<frame object at 0x3172f20>, '/usr/lib/python2.7/dist-packages/lldb/formatters/cpp/gnu_libstdcpp.py', 141, '__init__', ['ttlogger = lldb.formatters.Logger.Logger()n'], 0)
Providing synthetic children for a map named vec
Logging from function (<frame object at 0x3170d10>, '/usr/lib/python2.7/dist-packages/lldb/formatters/cpp/gnu_libstdcpp.py', 214, 'update', ['ttlogger = lldb.formatters.Logger.Logger()n'], 0)

如果说框架变量--raw，会发生同样的情况吗？此命令用于转储禁用矢量的数据格式化程序。在特定情况下，您将获得(假设没有崩溃(向量的内存布局，而不是存储在那里的字符串的打印输出。我主要是想弄清楚数据格式化程序是否是这个问题的一部分。

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