DEBUG: buffer: check in __b_put_blk() whether the buffer room is respected

This adds a BUG_ON() to make sure we don't face other situations like the
one fixed by previous commit.

(cherry picked from commit d439a496550ba44ceae09a59c72c278163ff8b99)
Signed-off-by: Willy Tarreau <w@1wt.eu>

diff --git a/include/haproxy/buf.h b/include/haproxy/buf.h
index 78409c0..de359f5 100644 (file)
--- a/include/haproxy/buf.h
+++ b/include/haproxy/buf.h
@@ -519,6 +519,8 @@ static inline void __b_putblk(struct buffer *b, const char *blk, size_t len)
 {
        size_t half = b_contig_space(b);
 
+       BUG_ON(b_data(b) + len > b_size(b));
+
        if (half > len)
                half = len;