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-rw-r--r--dbug/user.r8
1 files changed, 8 insertions, 0 deletions
diff --git a/dbug/user.r b/dbug/user.r
index e4e27ee8274..8d8a9ce6910 100644
--- a/dbug/user.r
+++ b/dbug/user.r
@@ -988,6 +988,14 @@ Most useful with
.B DBUG_PUSH
macros used to temporarily alter the
debugger state.
+.LI S
+When compiled with
+.I safemalloc
+this flag invokes "sanity" memory checks (for overwrites/underwrites)
+on each
+.B DBUG_ENTER
+and
+.B DBUG_RETURN.
.LI t[,N]
Enable function control flow tracing.
The maximum nesting depth is specified by N, and defaults to