3 files changed, 73 insertions, 0 deletions
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/anonymous-struct/Makefile b/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/anonymous-struct/Makefile
new file mode 100644
index 00000000000..99998b20bcb
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/anonymous-struct/Makefile
@@ -0,0 +1,3 @@
+CXX_SOURCES := main.cpp
+
+include Makefile.rules
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/anonymous-struct/TestCallUserAnonTypedef.py b/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/anonymous-struct/TestCallUserAnonTypedef.py
new file mode 100644
index 00000000000..d53fc522078
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/anonymous-struct/TestCallUserAnonTypedef.py
@@ -0,0 +1,44 @@
+"""
+Test calling user defined functions using expression evaluation.
+This test checks that typesystem lookup works correctly for typedefs of
+untagged structures.
+
+Ticket: https://llvm.org/bugs/show_bug.cgi?id=26790
+"""
+
+
+import lldb
+
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+
+class TestExprLookupAnonStructTypedef(TestBase):
+    mydir = TestBase.compute_mydir(__file__)
+
+    def setUp(self):
+        TestBase.setUp(self)
+        # Find the breakpoint
+        self.line = line_number('main.cpp', '// lldb testsuite break')
+
+    @expectedFailureAll(
+        oslist=['linux'],
+        archs=['arm'],
+        bugnumber="llvm.org/pr27868")
+    def test(self):
+        """Test typedeffed untagged struct arguments for function call expressions"""
+        self.build()
+
+        self.runCmd("file "+self.getBuildArtifact("a.out"),
+                    CURRENT_EXECUTABLE_SET)
+        lldbutil.run_break_set_by_file_and_line(
+            self,
+            "main.cpp",
+            self.line,
+            num_expected_locations=-1,
+            loc_exact=True
+        )
+
+        self.runCmd("run", RUN_SUCCEEDED)
+        self.expect("expr multiply(&s)", substrs=['$0 = 1'])
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/anonymous-struct/main.cpp b/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/anonymous-struct/main.cpp
new file mode 100644
index 00000000000..5b170c5f943
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/commands/expression/anonymous-struct/main.cpp
@@ -0,0 +1,26 @@
+#include <tgmath.h>
+
+typedef struct {
+    float f;
+    int i;
+} my_untagged_struct;
+
+double multiply(my_untagged_struct *s)
+{
+    return s->f * s->i;
+}
+
+double multiply(my_untagged_struct *s, int x)
+{
+    return multiply(s) * x;
+}
+
+int main(int argc, char **argv)
+{
+    my_untagged_struct s = {
+        .f = (float)argc,
+        .i = argc,
+    };
+    // lldb testsuite break
+    return !(multiply(&s, argc) == pow(argc, 3));
+}