Fixed segfault with try_files introduced by c985d90a8d1f.
If alias was used in a location given by a regular expression, nginx used to do wrong thing in try_files if a location name (i.e., regular expression) was an exact prefix of URI. The following configuration triggered a segmentation fault on a request to "/mail": location ~ /mail { alias /path/to/directory; try_files $uri =404; } Reported by Per Hansson.
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@ -1272,7 +1272,9 @@ ngx_http_core_try_files_phase(ngx_http_request_t *r,
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*e.pos = '\0';
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if (alias && ngx_strncmp(name, clcf->name.data, alias) == 0) {
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if (alias && alias != NGX_MAX_SIZE_T_VALUE
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&& ngx_strncmp(name, clcf->name.data, alias) == 0)
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{
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ngx_memmove(name, name + alias, len - alias);
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path.len -= alias;
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}
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