[master] 3056e30aa Clean up assertions in http_hdr_flags()
Martin Blix Grydeland
martin at varnish-software.com
Tue Aug 9 08:55:06 UTC 2022
commit 3056e30aa4879653d2697167440b21f125b9fa7e
Author: Martin Blix Grydeland <martin at varnish-software.com>
Date: Thu Aug 4 11:04:37 2022 +0200
Clean up assertions in http_hdr_flags()
The input argument assertions and checks in http_hdr_flags() were
misleading and lacking. With this patch it returns (NULL) on either input
being NULL, and also when called with an empty string instead of
asserting.
diff --git a/bin/varnishd/cache/cache_http.c b/bin/varnishd/cache/cache_http.c
index d48c0bb36..6c9f1da6c 100644
--- a/bin/varnishd/cache/cache_http.c
+++ b/bin/varnishd/cache/cache_http.c
@@ -145,9 +145,9 @@ http_hdr_flags(const char *b, const char *e)
unsigned u;
struct http_hdrflg *retval;
- if (e == NULL)
+ if (b == NULL || e == NULL)
return (NULL);
- assert(e > b);
+ assert(b <= e);
u = (unsigned)(e - b);
assert(b + u == e);
if (u < 2 || u > 19) // MIN_WORD_LENGTH & MAX_WORD_LENGTH
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