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-rw-r--r--polly/lib/CodeGen/IslExprBuilder.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/polly/lib/CodeGen/IslExprBuilder.cpp b/polly/lib/CodeGen/IslExprBuilder.cpp
index c749b2d8de5..089cac03245 100644
--- a/polly/lib/CodeGen/IslExprBuilder.cpp
+++ b/polly/lib/CodeGen/IslExprBuilder.cpp
@@ -587,6 +587,8 @@ Value *IslExprBuilder::createId(__isl_take isl_ast_expr *Expr) {
V = IDToValue[Id];
+ assert(V && "Unknown parameter id found");
+
isl_id_free(Id);
isl_ast_expr_free(Expr);
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