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lib: fix address sanitizer crash on find
Fix the following address sanitizer crash when running the command `find`: ERROR: AddressSanitizer: dynamic-stack-buffer-overflow WRITE of size 1 at 0x7fff4840fc1d thread T0 0 in print_cmd ../lib/command.c:1541 1 in cmd_find_cmds ../lib/command.c:2364 2 in find ../vtysh/vtysh.c:3732 3 in cmd_execute_command_real ../lib/command.c:995 4 in cmd_execute_command ../lib/command.c:1055 5 in cmd_execute ../lib/command.c:1219 6 in vtysh_execute_func ../vtysh/vtysh.c:486 7 in vtysh_execute ../vtysh/vtysh.c:671 8 in main ../vtysh/vtysh_main.c:721 9 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2) 10 in _start (/usr/bin/vtysh+0x21f64d) Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
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@ -1496,7 +1496,7 @@ static void permute(struct graph_node *start, struct vty *vty)
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static void print_cmd(struct vty *vty, const char *cmd)
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{
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int i, j, len = strlen(cmd);
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char buf[len];
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char buf[len + 1];
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bool skip = false;
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j = 0;
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