这样你的程序就会在valgrind监控下运行了,结果会直接输出到屏幕上。如果想把结果输出到日志文件(通常也需要这样),用如下的命令:valgrind --log-file=valgrind_log --leak-check=full --track-fds=yes 程序 参数
运行 :valgrind --leak-check=full --track-fds=yes test -a 后可以得到如下结果。
Address 0x13cd0c34 is 0 bytes after a block of size 28 alloc'd
检查时发现上面打印出的语句,说明内存分配后全部空间都被占用,这是请注意字符串拷贝可能越界。
Valgrind is an instrumentation framework for building dynamic analysis tools. Thereare Valgrind tools that can automatically detect many memory managementand threading bugs, and profile your programs in detail. You can alsouse Valgrind to build new tools.
The Valgrind distribution currently includes six production-qualitytools: a memory error detector, two thread error detectors, a cacheand branch-prediction profiler, a call-graph generating cache andbranch-prediction profiler, and a heap profiler. It also includesthree experimental tools: a heap/stack/global array overrun detector,a second heap profiler that examines how heap blocks are used, and aSimPoint basic block vector generator. It runs on the followingplatforms: X86/Linux, AMD64/Linux, ARM/Linux, PPC32/Linux,PPC64/Linux, S390X/Linux, MIPS/Linux, ARM/Android (2.3.x and later),X86/Android (4.0 and later), X86/Darwin and AMD64/Darwin (Mac OS X10.6 and 10.7, with limited support for 10.8).
Valgrind is Open Source /Free Software,and is freely available under theGNU General Public License, version 2.