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[lldb] Set result error state in 'frame variable' 

Ensure that errors in `frame variable` are reflected in result object.

The statistics for `frame variable` show invocations as being successful, even
when executing one of the error paths.

This change replaces `result.GetErrorStream()` with `result.AppendError()`,
which also sets the status to `eReturnStatusFailed`.

Differential Revision: https://reviews.llvm.org/D116788

(cherry picked from commit 2c7d10c412)
This commit is contained in:
Dave Lee 2022-01-06 19:38:31 -08:00
parent a6f1d04665
commit 2bcff220bf
2 changed files with 20 additions and 19 deletions
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30
lldb/source/Commands/CommandObjectFrame.cpp
View File

@ -558,18 +558,16 @@ protected:
}
}
} else if (num_matches == 0) {
result.GetErrorStream().Printf("error: no variables matched "
"the regular expression '%s'.\n",
entry.c_str());
result.AppendErrorWithFormat(
"no variables matched the regular expression '%s'.",
entry.c_str());
}
} else {
if (llvm::Error err = regex.GetError())
result.GetErrorStream().Printf(
"error: %s\n", llvm::toString(std::move(err)).c_str());
result.AppendError(llvm::toString(std::move(err)));
else
result.GetErrorStream().Printf(
"error: unknown regex error when compiling '%s'\n",
entry.c_str());
result.AppendErrorWithFormat(
"unknown regex error when compiling '%s'", entry.c_str());
}
} else // No regex, either exact variable names or variable
// expressions.
@ -605,14 +603,13 @@ protected:
valobj_sp->GetParent() ? entry.c_str() : nullptr);
valobj_sp->Dump(output_stream, options);
} else {
const char *error_cstr = error.AsCString(nullptr);
if (error_cstr)
result.GetErrorStream().Printf("error: %s\n", error_cstr);
if (auto error_cstr = error.AsCString(nullptr))
result.AppendError(error_cstr);
else
result.GetErrorStream().Printf("error: unable to find any "
"variable expression path that "
"matches '%s'.\n",
entry.c_str());
result.AppendErrorWithFormat(
"unable to find any variable expression path that matches "
"'%s'.",
entry.c_str());
}
}
}
@ -680,7 +677,8 @@ protected:
}
}
}
result.SetStatus(eReturnStatusSuccessFinishResult);
if (result.GetStatus() != eReturnStatusFailed)
result.SetStatus(eReturnStatusSuccessFinishResult);
}
if (m_option_variable.show_recognized_args) {

9
lldb/test/API/lang/cpp/frame-var-anon-unions/TestFrameVariableAnonymousUnions.py
View File

@ -30,6 +30,9 @@ class FrameVariableAnonymousUnionsTestCase(TestBase):
self.expect('frame variable c', substrs=["'A"])
self.expect('frame variable x', matching=False, substrs=['3'])
self.expect('frame variable y', matching=False, substrs=["'B'"])
self.expect('frame variable z', matching=False, substrs=['14'])
self.expect('frame variable x', error=True,
substrs=["no variable named 'x' found"])
self.expect('frame variable y', error=True,
substrs=["no variable named 'y' found"])
self.expect('frame variable z', error=True,
substrs=["no variable named 'z' found"])