[master] 5d7511cf2 panic: Sanitizers consume more stack frames

[Dridi Boukelmoune]

commit 5d7511cf2e21db8aae45d2878cb8b6b67f44050b
Author: Dridi Boukelmoune <dridi.boukelmoune at gmail.com>
Date:   Tue Jul 13 09:10:29 2021 +0200

    panic: Sanitizers consume more stack frames

diff --git a/bin/varnishd/cache/cache_panic.c b/bin/varnishd/cache/cache_panic.c
index 14de7e11b..30235976f 100644
--- a/bin/varnishd/cache/cache_panic.c
+++ b/bin/varnishd/cache/cache_panic.c
@@ -618,7 +618,11 @@ pan_backtrace(struct vsb *vsb)
 
 #else /* WITH_UNWIND */
 
-#define BACKTRACE_LEVELS	10
+#if __SANITIZER
+#  define BACKTRACE_LEVELS	20
+#else
+#  define BACKTRACE_LEVELS	10
+#endif
 
 static void
 pan_backtrace(struct vsb *vsb)