lldb/test/API/lang/cpp/rvalue-references/TestRvalueReferences.py

   1 """
   2 Tests that rvalue references are supported in C++
   3 """
   4
   5 import lldb
   6 from lldbsuite.test.decorators import *
   7 from lldbsuite.test.lldbtest import *
   8 from lldbsuite.test import lldbutil
   9
  10
  11 class RvalueReferencesTestCase(TestBase):
  12     # rdar://problem/11479676
  13     @expectedFailureAll(
  14         compiler="icc",
  15         bugnumber="ICC (13.1, 14-beta) do not emit DW_TAG_rvalue_reference_type.",
  16     )
  17     def test_with_run_command(self):
  18         """Test that rvalues are supported in the C++ expression parser"""
  19         self.build()
  20         self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
  21
  22         self.set_breakpoint(line_number("main.cpp", "// breakpoint 1"))
  23         self.set_breakpoint(line_number("main.cpp", "// breakpoint 2"))
  24
  25         self.runCmd("process launch", RUN_SUCCEEDED)
  26
  27         # Note that clang as of r187480 doesn't emit DW_TAG_const_type, unlike gcc 4.8.1
  28         # With gcc 4.8.1, lldb reports the type as (int &&const)
  29         self.expect(
  30             "frame variable i", startstr="(int &&", substrs=["i = 0x", "&i = 3"]
  31         )
  32
  33         self.expect("expression -- i", startstr="(int) ", substrs=["3"])
  34
  35         self.expect("breakpoint delete 1")
  36
  37         self.runCmd("process continue")
  38
  39         self.expect("expression -- foo(2)")
  40
  41         self.expect("expression -- int &&j = 3; foo(j)", error=True)
  42
  43         self.expect("expression -- int &&k = 6; k", startstr="(int) $1 = 6")
  44
  45     def set_breakpoint(self, line):
  46         lldbutil.run_break_set_by_file_and_line(
  47             self, "main.cpp", line, num_expected_locations=1, loc_exact=True
  48         )