Blame SOURCES/httpd-2.4.6-r1530280.patch

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--- a/modules/http/http_filters.c	2013/10/08 14:17:33	1530279
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+++ b/modules/http/http_filters.c	2013/10/08 14:18:44	1530280
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@@ -825,7 +825,7 @@
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  * handler.
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  * Zap r->status_line if bad.
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  */
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-static void validate_status_line(request_rec *r)
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+static apr_status_t validate_status_line(request_rec *r)
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 {
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     char *end;
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@@ -836,15 +836,19 @@
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             || (end - 3) != r->status_line
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             || (len >= 4 && ! apr_isspace(r->status_line[3]))) {
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             r->status_line = NULL;
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+            return APR_EGENERAL;
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         }
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         /* Since we passed the above check, we know that length three
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          * is equivalent to only a 3 digit numeric http status.
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          * RFC2616 mandates a trailing space, let's add it.
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          */
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-        else if (len == 3) {
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+        if (len == 3) {
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             r->status_line = apr_pstrcat(r->pool, r->status_line, " ", NULL);
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+            return APR_EGENERAL;
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         }
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+        return APR_SUCCESS;
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     }
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+    return APR_EGENERAL;
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 }
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 /*
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@@ -856,15 +860,25 @@
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 static void basic_http_header_check(request_rec *r,
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                                     const char **protocol)
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 {
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+    apr_status_t rv;
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+
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     if (r->assbackwards) {
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         /* no such thing as a response protocol */
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         return;
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     }
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-    validate_status_line(r);
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+    rv = validate_status_line(r);
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     if (!r->status_line) {
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         r->status_line = ap_get_status_line(r->status);
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+    } else if (rv != APR_SUCCESS) {
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+        /* Status line is OK but our own reason phrase
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+         * would be preferred if defined
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+         */
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+        const char *tmp = ap_get_status_line(r->status);
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+        if (!strncmp(tmp, r->status_line, 3)) {
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+            r->status_line = tmp;
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+        }
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     }
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     /* Note that we must downgrade before checking for force responses. */