
$mkdir -p foo/barmkdir-pfoo/barFLAGON$mkdir -p foo/testmkdir-pfoo/test==15377== InvalID read of size 1==15377== at 0x5201BBE: _getopt_internal_r (in /usr/lib/libc-2.17.so)==15377== by 0x5202CEA: _getopt_internal (in /usr/lib/libc-2.17.so)==15377== by 0x5202D37: getopt (in /usr/lib/libc-2.17.so)==15377== by 0x40351A: shell_ns_cmd_mkdir (shell.c:542)==15377== by 0x403AB4: normal_shell_cb (shell.c:610)==15377== by 0x402E8E: shell_mainloop (shell.c:402)==15377== by 0x401B67: main (main.c:52)==15377== Address 0x54e0912 is 2 bytes insIDe a block of size 3 free'd==15377== at 0x4C2AD3C: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)==15377== by 0x402C93: shell_mainloop (shell.c:384)==15377== by 0x401B67: main (main.c:52)==15377== $
这是源(剪辑):
for (i = 0; i < argc; i++) { puts(argv[i]);}while ((c = getopt(argc,argv,"p")) != -1) { switch (c) { case 'p': puts("FLAGON"); mkparents = true; break; case '?': fprintf(stderr,"invalID option -- %c",optopt); ret = 127; goto end; break; }} 所以它第一次运行它(mkdir -p)识别它(-p),第二次运行它,它没有.有任何想法吗?
解决方法 如果要扫描多个矢量,则需要通过将optind设置为1来重置getopt.The variable optind is the index of the next element of the argv[]
vector to be processed. It shall be initialized to 1 by the system,
and getopt() shall update it when it finishes with each element of
argv[].
如果将optind设置为1不起作用,也请尝试0,我想我记得在某处阅读过.
总结以上是内存溢出为你收集整理的c – 是否可以重复getopt全部内容,希望文章能够帮你解决c – 是否可以重复getopt所遇到的程序开发问题。
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