问题描述
我遇到的这个奇怪的错误是什么?我在 Ubuntu 10.10 上使用 g++ 编译 C++.当我运行可执行文件时它会随机弹出(可能在 8 小时内 2 次，每小时编译 10 次).但是，如果我 make clean 并重新编译，它大部分时间都会消失.
What is this strange error I'm getting? I'm compiling C++ using g++ on Ubuntu 10.10. It pops up randomly when I run the executable (maybe 2 times in 8 hours, with 10 compiles an hour). However, if I make clean and recompile it goes away most of the time.
*** glibc detected *** ./emailQueue.app: free(): invalid next size (fast): 0x0000000001c40270 ***
======= Backtrace: =========
/lib/libc.so.6(+0x774b6)[0x7f490d95e4b6]
/lib/libc.so.6(cfree+0x73)[0x7f490d964c83]
./emailQueue.app[0x401f47]
/lib/libc.so.6(__libc_start_main+0xfe)[0x7f490d905d8e]
./emailQueue.app[0x401cc9]
======= Memory map: ========
00400000-0040d000 r-xp 00000000 08:01 1311132 /home/server/Projects/email/emailQueue.app
0060d000-0060e000 r--p 0000d000 08:01 1311132 /home/server/Projects/email/emailQueue.app
0060e000-0060f000 rw-p 0000e000 08:01 1311132 /home/server/Projects/email/emailQueue.app
01c40000-01c82000 rw-p 00000000 00:00 0 [heap]
7f4908000000-7f4908021000 rw-p 00000000 00:00 0
7f4908021000-7f490c000000 ---p 00000000 00:00 0
7f490ce52000-7f490ce5e000 r-xp 00000000 08:01 1051251 /lib/libnss_files-2.12.1.so
7f490ce5e000-7f490d05d000 ---p 0000c000 08:01 1051251 /lib/libnss_files-2.12.1.so
7f490d05d000-7f490d05e000 r--p 0000b000 08:01 1051251 /lib/libnss_files-2.12.1.so
7f490d05e000-7f490d05f000 rw-p 0000c000 08:01 1051251 /lib/libnss_files-2.12.1.so
7f490d05f000-7f490d075000 r-xp 00000000 08:01 1048770 /lib/libz.so.1.2.3.4
7f490d075000-7f490d275000 ---p 00016000 08:01 1048770 /lib/libz.so.1.2.3.4
7f490d275000-7f490d276000 r--p 00016000 08:01 1048770 /lib/libz.so.1.2.3.4
7f490d276000-7f490d277000 rw-p 00017000 08:01 1048770 /lib/libz.so.1.2.3.4
7f490d277000-7f490d28e000 r-xp 00000000 08:01 1051248 /lib/libnsl-2.12.1.so
7f490d28e000-7f490d48d000 ---p 00017000 08:01 1051248 /lib/libnsl-2.12.1.so
7f490d48d000-7f490d48e000 r--p 00016000 08:01 1051248 /lib/libnsl-2.12.1.so
7f490d48e000-7f490d48f000 rw-p 00017000 08:01 1051248 /lib/libnsl-2.12.1.so
7f490d48f000-7f490d491000 rw-p 00000000 00:00 0
7f490d491000-7f490d49a000 r-xp 00000000 08:01 1051244 /lib/libcrypt-2.12.1.so
7f490d49a000-7f490d69a000 ---p 00009000 08:01 1051244 /lib/libcrypt-2.12.1.so
7f490d69a000-7f490d69b000 r--p 00009000 08:01 1051244 /lib/libcrypt-2.12.1.so
7f490d69b000-7f490d69c000 rw-p 0000a000 08:01 1051244 /lib/libcrypt-2.12.1.so
7f490d69c000-7f490d6ca000 rw-p 00000000 00:00 0
7f490d6ca000-7f490d6e2000 r-xp 00000000 08:01 1051256 /lib/libpthread-2.12.1.so
7f490d6e2000-7f490d8e1000 ---p 00018000 08:01 1051256 /lib/libpthread-2.12.1.so
7f490d8e1000-7f490d8e2000 r--p 00017000 08:01 1051256 /lib/libpthread-2.12.1.so
7f490d8e2000-7f490d8e3000 rw-p 00018000 08:01 1051256 /lib/libpthread-2.12.1.so
7f490d8e3000-7f490d8e7000 rw-p 00000000 00:00 0
7f490d8e7000-7f490da61000 r-xp 00000000 08:01 1048743 /lib/libc-2.12.1.so
7f490da61000-7f490dc60000 ---p 0017a000 08:01 1048743 /lib/libc-2.12.1.so
7f490dc60000-7f490dc64000 r--p 00179000 08:01 1048743 /lib/libc-2.12.1.so
7f490dc64000-7f490dc65000 rw-p 0017d000 08:01 1048743 /lib/libc-2.12.1.so
7f490dc65000-7f490dc6a000 rw-p 00000000 00:00 0
7f490dc6a000-7f490dc7f000 r-xp 00000000 08:01 1048655 /lib/libgcc_s.so.1
7f490dc7f000-7f490de7e000 ---p 00015000 08:01 1048655 /lib/libgcc_s.so.1
7f490de7e000-7f490de7f000 r--p 00014000 08:01 1048655 /lib/libgcc_s.so.1
7f490de7f000-7f490de80000 rw-p 00015000 08:01 1048655 /lib/libgcc_s.so.1
7f490de80000-7f490df02000 r-xp 00000000 08:01 1051246 /lib/libm-2.12.1.so
7f490df02000-7f490e101000 ---p 00082000 08:01 1051246 /lib/libm-2.12.1.so
7f490e101000-7f490e102000 r--p 00081000 08:01 1051246 /lib/libm-2.12.1.so
7f490e102000-7f490e103000 rw-p 00082000 08:01 1051246 /lib/libm-2.12.1.so
7f490e103000-7f490e1eb000 r-xp 00000000 08:01 4853329 /usr/lib/libstdc++.so.6.0.14
7f490e1eb000-7f490e3ea000 ---p 000e8000 08:01 4853329 /usr/lib/libstdc++.so.6.0.14
7f490e3ea000-7f490e3f2000 r--p 000e7000 08:01 4853329 /usr/lib/libstdc++.so.6.0.14
7f490e3f2000-7f490e3f4000 rw-p 000ef000 08:01 4853329 /usr/lib/libstdc++.so.6.0.14
7f490e3f4000-7f490e409000 rw-p 00000000 00:00 0
7f490e409000-7f490e5c7000 r-xp 00000000 08:01 4851315 /usr/lib/libmysqlclient.so.16.0.0
7f490e5c7000-7f490e7c7000 ---p 001be000 08:01 4851315 /usr/lib/libmysqlclient.so.16.0.0
7f490e7c7000-7f490e7cc000 r--p 001be000 08:01 4851315 /usr/lib/libmysqlclient.so.16.0.0
7f490e7cc000-7f490e816000 rw-p 001c3000 08:01 4851315 /usr/lib/libmysqlclient.so.16.0.0
7f490e816000-7f490e817000 rw-p 00000000 00:00 0
7f490e817000-7f490e837000 r-xp 00000000 08:01 1048597 /lib/ld-2.12.1.so
7f490ea15000-7f490ea1c000 rw-p 00000000 00:00 0
7f490ea33000-7f490ea37000 rw-p 00000000 00:00 0
7f490ea37000-7f490ea38000 r--p 00020000 08:01 1048597 /lib/ld-2.12.1.so
7f490ea38000-7f490ea39000 rw-p 00021000 08:01 1048597 /lib/ld-2.12.1.so
7f490ea39000-7f490ea3a000 rw-p 00000000 00:00 0
7fffb85b9000-7fffb85da000 rw-p 00000000 00:00 0 [stack]
7fffb85ff000-7fffb8600000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]
Aborted
推荐答案
说明你内存出错了.您可能试图 free 一个不是由 malloc 分配的指针(或 delete 一个不是由 创建的对象new) 或者您可能会多次尝试delete 这样的对象.您可能正在溢出缓冲区或以其他方式写入不应写入的内存，从而导致堆损坏.
It means that you have a memory error. You may be trying to free a pointer that wasn't allocated by malloc (or delete an object that wasn't created by new) or you may be trying to free/delete such an object more than once. You may be overflowing a buffer or otherwise writing to memory to which you shouldn't be writing, causing heap corruption.
任何数量的编程错误都可能导致此问题.您需要使用调试器，获取回溯，并查看错误发生时程序在做什么.如果失败并且您确定您在之前的某个时间点损坏了堆，那么您可能会进行一些痛苦的调试(如果项目足够小以至于您可以逐个处理它可能不会太痛苦).
Any number of programming errors can cause this problem. You need to use a debugger, get a backtrace, and see what your program is doing when the error occurs. If that fails and you determine you have corrupted the heap at some previous point in time, you may be in for some painful debugging (it may not be too painful if the project is small enough that you can tackle it piece by piece).
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