Fix crash reported in PR2923 where a function declared using typeof(another_function) would have FunctionDecl::getNumParams() return the number of parameters in the original function type and not the number of parameters in the actual FunctionDecl.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58392 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/PR2923.c b/test/Sema/PR2923.c
new file mode 100644
index 0000000..dac25a2
--- /dev/null
+++ b/test/Sema/PR2923.c
@@ -0,0 +1,12 @@
+// RUN: clang -fsyntax-only -verify
+
+// Test for absence of crash reported in PR 2923:
+//
+// http://llvm.org/bugs/show_bug.cgi?id=2923
+//
+// Previously we had a crash when deallocating the FunctionDecl for 'bar'
+// because FunctionDecl::getNumParams() just used the type of foo to determine
+// the number of parameters it has. In the case of 'bar' there are no
+// ParmVarDecls.
+int foo(int x, int y) { return x + y; }
+extern typeof(foo) bar;