================
@@ -0,0 +1,77 @@
+# RUN: split-file %s %t
+# RUN: %clang_host -g %t/main.cpp -o %t.out
+#
+# RUN: %lldb -x -b -o "settings set interpreter.stop-command-source-on-error
false" \
+# RUN: -s %t/no-target.input 2>&1 | FileCheck %s
--check-prefix=CHECK-NO-TARGET
+#
+# RUN: %lldb %t.out -x -b -o "settings set
interpreter.stop-command-source-on-error false" \
+# RUN: -s %t/with-target.input 2>&1 | FileCheck %s
--check-prefix=CHECK-TARGET
+
+#--- main.cpp
+
+int main() {
+ int x = 10;
+ __builtin_debugtrap();
+}
+
+#--- with-target.input
+
+expr blah
+
+# CHECK-TARGET: (lldb) expr
+# CHECK-TARGET: note: Falling back to default language. Ran expression as
'Objective C++'.
+
+run
+
+expr blah
+
+# CHECK-TARGET: (lldb) expr
+# CHECK-TARGET: note: Ran expression as 'C++14'.
+
+expr -l objc -- blah
+
+# CHECK-TARGET: (lldb) expr
+# CHECK-TARGET: note: Expression evaluation in pure Objective-C not supported.
Ran expression as 'Objective C++'.
+
+expr -l c -- blah
+
+# CHECK-TARGET: (lldb) expr
+# CHECK-TARGET: note: Expression evaluation in pure C not supported. Ran
expression as 'ISO C++'.
+
+expr -l c++14 -- blah
+
+# CHECK-TARGET: (lldb) expr
+# CHECK-TARGET: note: Ran expression as 'C++14'
+
+expr -l c++20 -- blah
+
+# CHECK-TARGET: (lldb) expr
+# CHECK-TARGET: note: Ran expression as 'C++20'
+
+expr -l objective-c++ -- blah
+
+# CHECK-TARGET: (lldb) expr
+# CHECK-TARGET: note: Ran expression as 'Objective C++'
+
+# D uses TypeSystemClang but running expressions in it isn't supported. Test
that we warn about this.
+expr -l D -- blah
+
+# CHECK-TARGET: (lldb) expr
+# CHECK-TARGET: note: Expression evaluation in D not supported. Falling back
to default language. Ran expression as 'Objective C++'.
+
+expr -l c++17 -- x = 5
+
+# CHECK-TARGET: (lldb) expr
+# CHECK-TARGET-NOT: note:
+
+#--- no-target.input
+
+expr blah
+
+# CHECK-NO-TARGET: (lldb) expr
+# CHECK-NO-TARGET: note: Falling back to default language. Ran expression
as 'Objective C++'.
----------------
adrian-prantl wrote:
Should there be another test that says `expr 1` with no arguments that checks
that the note isn't printed when expression is successful?
https://github.com/llvm/llvm-project/pull/161688
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