================
@@ -0,0 +1,18 @@
+// RUN: %clang_cc1 -verify -fopenmp -fopenmp-version=51 %s
+// RUN: %clang_cc1 -verify -fopenmp-simd -fopenmp-version=51 %s
+
+// expected-no-diagnostics
+
+// Verify no crash when collapsing a loop nest where the induction variable
+// is an extern reference type. PR/issue: null dereference in getInitLCDecl
+// when VarDecl::getDefinition() returns nullptr.
+
+extern int &dim;
+auto test() {
+#pragma omp parallel for collapse(2)
+ for (int i = 0; i < dim; ++i) {
+ for (i = 0; i < 10; i++) {
----------------
zahiraam wrote:
Done.
https://github.com/llvm/llvm-project/pull/203252
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