diff --git a/gcc/testsuite/gcc.dg/pr114293.c b/gcc/testsuite/gcc.dg/pr114293.c
new file mode 100644
index 00000000000..eb49ede0657
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr114293.c
@@ -0,0 +1,10 @@
+/* PR tree-optimization/114293 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -w" } */
+
+int
+foo (int x)
+{
+  __builtin_memset (&x, 5, -1);
+  return __builtin_strlen ((char *) &x);
+}
diff --git a/gcc/tree-ssa-strlen.cc b/gcc/tree-ssa-strlen.cc
index 20540c52948..e09c9cc081f 100644
--- a/gcc/tree-ssa-strlen.cc
+++ b/gcc/tree-ssa-strlen.cc
@@ -2341,6 +2341,8 @@ strlen_pass::handle_builtin_strlen ()
 		  wide_int min = wi::to_wide (old);
 		  wide_int max
 		    = wi::to_wide (TYPE_MAX_VALUE (ptrdiff_type_node)) - 2;
+		  if (wi::gtu_p (min, max))
+		    max = wi::to_wide (TYPE_MAX_VALUE (TREE_TYPE (lhs)));
 		  set_strlen_range (lhs, min, max);
 		}
 	      else