[clang] [Clang] Fix crash on subscripting a complete matrix subscript expression (PR #207317)

[Farzon Lotfi via cfe-commits]

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@@ -228,3 +228,8 @@ float *address_of_element(sx5x10_t *a) {
   return &(*a)[0][1];
   // expected-error at -1 {{address of matrix element requested}}
 }
+
+void test_triple_subscript(sx5x10_t a) {
+  float v13 = a[0][0][0];
+  // expected-error at -1 {{subscripted value is not an array, pointer, or vector}}
+}
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farzonl wrote:

Add a new line

https://github.com/llvm/llvm-project/pull/207317