#379 closed defect (invalid)
the bug of the function ngx_cpystrn() in the file of ngx_string.c
| Reported by: | Wei Wang | Owned by: | |
|---|---|---|---|
| Priority: | major | Milestone: | 1.5 |
| Component: | nginx-core | Version: | 1.3.x |
| Keywords: | ngx_cpystrn | Cc: | |
| uname -a: | SMP Wed Jun 23 14:47:10 CST 2010 x86_64 x86_64 x86_64 GNU/Linux | ||
| nginx -V: |
nginx version: nginx/1.3.11
built by gcc 3.4.5 20051201 (Red Hat 3.4.5-2) |
||
Description
The function ngx_cpystrn(u_char *dst, u_char *src, n) is to copy n characters from src to dst.
But it does not copy the last character because of the statement while (--n){}.
If n=1, then --n=0, and then the while loop does not execute, and then the last character of n does not copy to the dst.
Note:
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The ngx_cpystrn() functions is to copy null-terminated string from src to dst, assuming dst points to a buffer of size n.