Add sema checks for calls to functions taking static array parameters

llvm-svn: 142157

1 files changed, 31 insertions, 0 deletions

diff --git a/clang/test/Sema/static-array.c b/clang/test/Sema/static-array.c
new file mode 100644
index 00000000000..2d4b968decd
--- /dev/null
+++ b/clang/test/Sema/static-array.c
@@ -0,0 +1,31 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+void cat0(int a[static 0]) {} // expected-warning {{'static' has no effect on zero-length arrays}}
+
+void cat(int a[static 3]) {} // expected-note 2 {{callee declares array parameter as static here}}
+
+typedef int i3[static 3];
+void tcat(i3 a) {}
+
+void vat(int i, int a[static i]) {} // expected-note {{callee declares array parameter as static here}}
+
+void f(int *p) {
+  int a[2], b[3], c[4];
+
+  cat0(0);
+
+  cat(0); // expected-warning {{null passed to a callee which requires a non-null argument}}
+  cat(a); // expected-warning {{array argument is too small; contains 2 elements, callee requires at least 3}}
+  cat(b);
+  cat(c);
+  cat(p);
+
+  tcat(0); // expected-warning {{null passed to a callee which requires a non-null argument}}
+  tcat(a); // expected-warning {{array argument is too small; contains 2 elements, callee requires at least 3}}
+  tcat(b);
+  tcat(c);
+  tcat(p);
+
+  vat(1, 0); // expected-warning {{null passed to a callee which requires a non-null argument}}
+  vat(3, b);
+}