vendor/lldb/lldb-trunk-r256945

3 files changed, 165 insertions, 0 deletions

diff --git a/packages/Python/lldbsuite/test/expression_command/call-throws/Makefile b/packages/Python/lldbsuite/test/expression_command/call-throws/Makefile
new file mode 100644
index 0000000000000..ac07b31c48cc9
--- /dev/null
+++ b/packages/Python/lldbsuite/test/expression_command/call-throws/Makefile
@@ -0,0 +1,6 @@
+LEVEL = ../../make
+
+OBJC_SOURCES := call-throws.m
+
+include $(LEVEL)/Makefile.rules
+LDFLAGS += -framework Foundation
diff --git a/packages/Python/lldbsuite/test/expression_command/call-throws/TestCallThatThrows.py b/packages/Python/lldbsuite/test/expression_command/call-throws/TestCallThatThrows.py
new file mode 100644
index 0000000000000..0e766ac2953ae
--- /dev/null
+++ b/packages/Python/lldbsuite/test/expression_command/call-throws/TestCallThatThrows.py
@@ -0,0 +1,112 @@
+"""
+Test calling a function that throws an ObjC exception, make sure that it doesn't propagate the exception.
+"""
+
+from __future__ import print_function
+
+
+
+import lldb
+import lldbsuite.test.lldbutil as lldbutil
+from lldbsuite.test.lldbtest import *
+
+class ExprCommandWithThrowTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+
+        self.main_source = "call-throws.m"
+        self.main_source_spec = lldb.SBFileSpec (self.main_source)
+
+    @skipUnlessDarwin
+    def test(self):
+        """Test calling a function that throws and ObjC exception."""
+        self.build()
+        self.call_function()
+
+    def check_after_call (self):
+        # Check that we are back where we were before:
+        frame = self.thread.GetFrameAtIndex(0)
+        self.assertTrue (self.orig_frame_pc == frame.GetPC(), "Restored the zeroth frame correctly")
+
+        
+    def call_function(self):
+        """Test calling function that throws."""
+        exe_name = "a.out"
+        exe = os.path.join(os.getcwd(), exe_name)
+
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+        breakpoint = target.BreakpointCreateBySourceRegex('I am about to throw.',self.main_source_spec)
+        self.assertTrue(breakpoint.GetNumLocations() > 0, VALID_BREAKPOINT)
+
+        # Launch the process, and do not stop at the entry point.
+        process = target.LaunchSimple (None, None, self.get_process_working_directory())
+
+        self.assertTrue(process, PROCESS_IS_VALID)
+
+        # Frame #0 should be at our breakpoint.
+        threads = lldbutil.get_threads_stopped_at_breakpoint (process, breakpoint)
+        
+        self.assertTrue(len(threads) == 1)
+        self.thread = threads[0]
+        
+        options = lldb.SBExpressionOptions()
+        options.SetUnwindOnError(True)
+
+        frame = self.thread.GetFrameAtIndex(0)
+        # Store away the PC to check that the functions unwind to the right place after calls
+        self.orig_frame_pc = frame.GetPC()
+
+        value = frame.EvaluateExpression ("[my_class callMeIThrow]", options)
+        self.assertTrue (value.IsValid())
+        self.assertTrue (value.GetError().Success() == False)
+
+        self.check_after_call()
+
+        # Okay, now try with a breakpoint in the called code in the case where
+        # we are ignoring breakpoint hits.
+        handler_bkpt = target.BreakpointCreateBySourceRegex("I felt like it", self.main_source_spec)
+        self.assertTrue (handler_bkpt.GetNumLocations() > 0)
+        options.SetIgnoreBreakpoints(True)
+        options.SetUnwindOnError(True)
+
+        value = frame.EvaluateExpression ("[my_class callMeIThrow]", options)
+
+        self.assertTrue (value.IsValid() and value.GetError().Success() == False)
+        self.check_after_call()
+
+        # Now set the ObjC language breakpoint and make sure that doesn't interfere with the call:
+        exception_bkpt = target.BreakpointCreateForException (lldb.eLanguageTypeObjC, False, True)
+        self.assertTrue(exception_bkpt.GetNumLocations() > 0)
+
+        options.SetIgnoreBreakpoints(True)
+        options.SetUnwindOnError(True)
+
+        value = frame.EvaluateExpression ("[my_class callMeIThrow]", options)
+
+        self.assertTrue (value.IsValid() and value.GetError().Success() == False)
+        self.check_after_call()
+
+
+        # Now turn off exception trapping, and call a function that catches the exceptions,
+        # and make sure the function actually completes, and we get the right value:
+        options.SetTrapExceptions(False)
+        value = frame.EvaluateExpression ("[my_class iCatchMyself]", options)
+        self.assertTrue (value.IsValid())
+        self.assertTrue (value.GetError().Success() == True)
+        self.assertTrue (value.GetValueAsUnsigned() == 57)
+        self.check_after_call()
+        options.SetTrapExceptions(True)
+
+        # Now set this unwind on error to false, and make sure that we stop where the exception was thrown
+        options.SetUnwindOnError(False)
+        value = frame.EvaluateExpression ("[my_class callMeIThrow]", options)
+
+
+        self.assertTrue (value.IsValid() and value.GetError().Success() == False)
+        self.check_after_call()
diff --git a/packages/Python/lldbsuite/test/expression_command/call-throws/call-throws.m b/packages/Python/lldbsuite/test/expression_command/call-throws/call-throws.m
new file mode 100644
index 0000000000000..a184718be7ddc
--- /dev/null
+++ b/packages/Python/lldbsuite/test/expression_command/call-throws/call-throws.m
@@ -0,0 +1,47 @@
+#import <Foundation/Foundation.h>
+
+@interface MyClass : NSObject
+{
+}
+- (int) callMeIThrow;
+- (int) iCatchMyself;
+@end
+
+@implementation MyClass
+- (int) callMeIThrow
+{
+    NSException *e = [NSException
+                       exceptionWithName:@"JustForTheHeckOfItException"
+                       reason:@"I felt like it"
+                       userInfo:nil];
+    @throw e;
+    return 56;
+}
+
+- (int) iCatchMyself
+{
+  int return_value = 55;
+  @try
+    {
+      return_value = [self callMeIThrow];
+    }
+  @catch (NSException *e)
+    {
+      return_value = 57;
+    }
+  return return_value;
+}
+@end
+
+int
+main ()
+{
+  int return_value;
+  MyClass *my_class = [[MyClass alloc] init];
+
+  NSLog (@"I am about to throw.");
+
+  return_value = [my_class iCatchMyself];
+
+  return return_value;
+}