1 files changed, 38 insertions, 0 deletions
diff --git a/clang/test/CodeGen/tentative-decls.c b/clang/test/CodeGen/tentative-decls.c
new file mode 100644
index 0000000..d88c346
--- /dev/null
+++ b/clang/test/CodeGen/tentative-decls.c
@@ -0,0 +1,38 @@
+// RUN: %clang_cc1 -emit-llvm -o %t %s
+
+// RUN: grep '@r = common global \[1 x .*\] zeroinitializer' %t
+
+int r[];
+int (*a)[] = &r;
+
+struct s0;
+struct s0 x;
+// RUN: grep '@x = common global .struct.s0 zeroinitializer' %t
+
+struct s0 y;
+// RUN: grep '@y = common global .struct.s0 zeroinitializer' %t
+struct s0 *f0() {
+  return &y;
+}
+
+struct s0 {
+  int x;
+};
+
+// RUN: grep '@b = common global \[1 x .*\] zeroinitializer' %t
+int b[];
+int *f1() {
+  return b;
+}
+
+// Check that the most recent tentative definition wins.
+// RUN: grep '@c = common global \[4 x .*\] zeroinitializer' %t
+int c[];
+int c[4];
+
+// Check that we emit static tentative definitions
+// RUN: grep '@c5 = internal global \[1 x .*\] zeroinitializer' %t
+static int c5[];
+static int func() { return c5[0]; }
+int callfunc() { return func(); }
+