我编写了一个程序，可以在我的 64 位机器（运行 linux SUSE）上编译并运行良好。现在我需要调用一个外部库，但我只能访问 32 位二进制文件。我的源代码编译并从 ssh 命令行无错误地链接到 32 位机器，但我现在在调用库之前在运行时遇到内存错误，或者发生任何有趣的事情......
我有一个简单的类cWorld来初始化其他一些类，它有一个方法cWorld::ReadData()可以打开一个文本文件并从文件中解析/读取行并将值存储在 的各个成员中cWorld，然后关闭文件。文件input.txt仅包含一些解释文本和初始条件值，用逗号和分号分隔。没有什么开创性的！
用gdb调试显示文件打开，关闭成功，所有数据都存储成功，然后ReadData()退出方法最后抛出SIGABRT。
从我的程序中提取问题代码：
#include <iostream>
#include <fstream>
#include <sstream>
#include <string>
#include <vector>
class cWorld {
public:
cWorld ();
void CallReadData ();
private:
int N_target, N_steps;
double t0, tf, delt;
std::vector<double> data;
void ReadData ();
};
cWorld::cWorld () {
N_target = 0;
N_steps = 0;
delt = 0.0;
t0 = 0.0;
tf = 0.0;
}
void cWorld::CallReadData() {
ReadData();
}
void cWorld::ReadData() {
std::string line;
std::ifstream input("input_test.txt");
if (input.is_open()) {
// RETRIEVE INPUT OPTIMIZATION PARAMETERS
input.ignore(1000, '>'); // ignore text until first '>' appears
std::getline(input, line, ';'); // get int N_target
std::stringstream(line) >> N_target;
input.ignore(1000, '>'); // ignore text until first '>' appears
std::getline(input, line, ','); // get t0
std::stringstream(line) >> t0;
std::getline(input, line, ','); // get delt
std::stringstream(line) >> delt;
std::cout << "delt = " << delt << std::endl;
std::getline(input, line, ','); // get tf
std::stringstream(line) >> tf;
N_steps = (int)( (tf - t0) / delt ) + 1; // set an int cWorld::N_steps
// RETRIEVE INPUT STATE PARAMETERS
int index = 0; // initialize local iterator
data.resize(12*N_target, 0.0); // set data size
std::cout << "data elements = " << data.size() << std::endl;
while (!input.eof()) {
// if there's '<' end loop
if (input.peek() == '<') break;
// if there's a semicolon, store following text in data...
else if (input.peek() == ';') {
input.ignore(1000, '>');
std::getline(input, line, ',');
std::stringstream(line) >> data[index];
index++;
}
// else if there's a comma, store following text in data...
else {
std::getline(input, line, ',');
std::stringstream(line) >> data[index];
index++;
}
}
input.close();
}
else std::cout << "Can't open file 'input.txt'.\n";
}
int main() {
cWorld world_1;
world_1.CallReadData();
return 0;
}
输入文本文件：
/****************************************************************/
/* */
/* p2pOpt.C INPUT FILE */
/* */
/****************************************************************/
System Parameters: number of paths to optimize
format: N_target; (int)
>3;
System Parameters: start time, step size, end time
format: t0,delt,tf,; (doubles)
>0.0,0.001,1,;
Target 1 Parameters: Initial Conditions
format: x,y,z,theta1,theta2,theta3,xdot,ydot,zdot,theta1dot,theta2dot,theta3dot,;(doubles)
>1.0,0.0,0.0,3.14159265359,0.0,0.0,1.0,0.0,0.0,1.0,0.0,0.0,;
>2.0,2.0,2.0,2.0,2.0,2.0,2.0,2.0,2.0,2.0,2.0,2.0,;
>3.0,3.0,3.0,3.0,3.0,3.0,3.0,3.0,3.0,3.0,3.0,3.0,;
<
这是调试输出：
======= Memory map: ========
08048000-0804b000 r-xp 00000000 00:29 18254842 /home/ston_sa/core/motion_planning/algorithms_cpp/p2pOpt/test_3_32
0804b000-0804c000 r--p 00002000 00:29 18254842 /home/ston_sa/core/motion_planning/algorithms_cpp/p2pOpt/test_3_32
0804c000-0804d000 rw-p 00003000 00:29 18254842 /home/ston_sa/core/motion_planning /algorithms_cpp/p2pOpt/test_3_32
0804d000-0806e000 rw-p 00000000 00:00 0 [heap]
b7b00000-b7b21000 rw-p 00000000 00:00 0
b7b21000-b7c00000 ---p 00000000 00:00 0
b7cd8000-b7cdb000 rw-p 00000000 00:00 0
b7cdb000-b7e42000 r-xp 00000000 08:06 114523898 /lib/libc-2.11.3.so
b7e42000-b7e44000 r--p 00167000 08:06 114523898 /lib/libc-2.11.3.so
b7e44000-b7e45000 rw-p 00169000 08:06 114523898 /lib/libc-2.11.3.so
b7e45000-b7e48000 rw-p 00000000 00:00 0
b7e48000-b7e64000 r-xp 00000000 08:06 114544736 /lib/libgcc_s.so.1
b7e64000-b7e65000 r--p 0001b000 08:06 114544736 /lib/libgcc_s.so.1
b7e65000-b7e66000 rw-p 0001c000 08:06 114544736 /lib/libgcc_s.so.1
b7e66000-b7e8c000 r-xp 00000000 08:06 114353773 /lib/libm-2.11.3.so
b7e8c000-b7e8d000 r--p 00026000 08:06 114353773 /lib/libm-2.11.3.so
b7e8d000-b7e8e000 rw-p 00027000 08:06 114353773 /lib/libm-2.11.3.so
b7e8e000-b7f70000 r-xp 00000000 08:06 2169219 /usr/lib/libstdc++.so.6.0.16
b7f70000-b7f74000 r--p 000e2000 08:06 2169219 /usr/lib/libstdc++.so.6.0.16
b7f74000-b7f75000 rw-p 000e6000 08:06 2169219 /usr/lib/libstdc++.so.6.0.16
b7f75000-b7f7c000 rw-p 00000000 00:00 0
b7fdd000-b7fdf000 rw-p 00000000 00:00 0
b7fdf000-b7ffe000 r-xp 00000000 08:06 114544574 /lib/ld-2.11.3.so
b7ffe000-b7fff000 r--p 0001e000 08:06 114544574 /lib/ld-2.11.3.so
b7fff000-b8000000 rw-p 0001f000 08:06 114544574 /lib/ld-2.11.3.so
bffdf000-c0000000 rw-p 00000000 00:00 0 [stack]
ffffe000-fffff000 r-xp 00000000 00:00 0 [vdso]
Program received signal SIGABRT, Aborted.
0xffffe424 in __kernel_vsyscall ()
和回溯：
#0 0xffffe424 in __kernel_vsyscall ()
#1 0xb7d05e20 in raise () from /lib/libc.so.6
#2 0xb7d07755 in abort () from /lib/libc.so.6
#3 0xb7d44d65 in __libc_message () from /lib/libc.so.6
#4 0xb7d4ac54 in malloc_printerr () from /lib/libc.so.6
#5 0xb7d4c563 in _int_free () from /lib/libc.so.6
#6 0xb7d4f69d in free () from /lib/libc.so.6
#7 0xb7f3fa0f in operator delete(void*) () from /usr/lib/libstdc++.so.6
#8 0xb7f26f6b in std::string::_Rep::_M_destroy(std::allocator<char> const&) () from /usr/lib/libstdc++.so.6
#9 0xb7f26fac in ?? () from /usr/lib/libstdc++.so.6
#10 0xb7f2701e in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string() () from /usr/lib/libstdc++.so.6
#11 0x080495bf in cWorld::ReadData (this=0xbfffefe0) at test_3.cpp:91
#12 0x0804961b in cWorld::CallReadData (this=0xbfffefe0) at test_3.cpp:30
#13 0x08049646 in main () at test_3.cpp:100
#11test_3.cpp:91是ReadData()方法的右括号。