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+.. title:: clang-tidy - misc-redundant-expression
+
+misc-redundant-expression
+=========================
+
+Detect redundant expressions which are typically errors due to copy-paste.
+
+Depending on the operator expressions may be
+  * redundant,
+  * always be `true`,
+  * always be `false`,
+  * always be a constant (zero or one)
+
+Example:
+.. code:: c++
+
+  ((x+1) | (x+1))             // (x+1) is redundant
+  (p->x == p->x)              // always true
+  (p->x < p->x)               // always false
+  (speed - speed + 1 == 12)   // speed - speed is always zero