Add testcase for weakly linked globals

1 files changed, 28 insertions, 0 deletions

diff --git a/test/Feature/GlobalVariable.ll b/test/Feature/GlobalVariable.ll
new file mode 100644
index 00000000..7b567bcb
--- /dev/null
+++ b/test/Feature/GlobalVariable.ll
@@ -0,0 +1,28 @@
+; RUN: llvm-as %s -f -o %t1.bc
+; RUN: rm -rf %t.klee-out
+; Run KLEE and expect it to error out but not crash
+; RUN: not %klee --output-dir=%t.klee-out --optimize=false %t1.bc 2> %t2
+; Check that it could not find an initializer for the external_function global
+; RUN: FileCheck %s --input-file %t2
+; CHECK: ERROR: Unable to load symbol(external_function) while initializing globals
+
+@external_function = extern_weak global i8
+@bar = internal thread_local global <{ [56 x i8] }> zeroinitializer, align 32
+@handle = global i8* null, align 8
+
+define internal void @foo(i8* nocapture) {
+entry:
+    ret void
+}
+
+define i32 @main(i32 %argc, i8** nocapture %argv) nounwind readnone {
+entry:
+  br i1 icmp ne (i8* @external_function, i8* null), label %bbtrue, label %bbfalse
+
+bbtrue:
+  %0 = tail call i32 bitcast (i8* @external_function to i32 (void (i8*)*, i8*, i8*)*)(void (i8*)* nonnull @foo, i8* getelementptr inbounds (<{ [56 x i8] }>, <{ [56 x i8] }>* @bar, i64 0, i32 0, i64 0), i8* bitcast (i8** @handle to i8*))
+  ret i32 0
+
+bbfalse:
+  ret i32 1
+}