diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/debugger/debugger.cpp | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/src/debugger/debugger.cpp b/src/debugger/debugger.cpp index ae96ca2..cd1eac1 100644 --- a/src/debugger/debugger.cpp +++ b/src/debugger/debugger.cpp @@ -1057,16 +1057,37 @@ namespace Hsdbg if (!frame.IsValid()) return fail("no frame selected"); + // the injected code is compiled by lldb's clang and jitted into the + // inferior, so any side effect it has (a = 60, *p = ...) writes real + // process memory and survives the resume, exactly as if the source had + // run it. the options here keep that from derailing the session: a fault + // in the snippet is unwound instead of left mid-flight, breakpoints the + // snippet reaches are ignored so it cannot stop inside itself, and a + // timeout stops a runaway call from hanging the ui + lldb::SBExpressionOptions options; + options.SetUnwindOnError(true); + options.SetIgnoreBreakpoints(true); + options.SetTryAllThreads(true); + options.SetAutoApplyFixIts(true); + options.SetTimeoutInMicroSeconds(5'000'000); + const std::string text(expression); - lldb::SBValue value = frame.EvaluateExpression(text.c_str()); + lldb::SBValue value = frame.EvaluateExpression(text.c_str(), options); if (lldb::SBError error = value.GetError(); error.Fail()) return fail("{}", message_of(error, "could not evaluate")); + // the snippet may have printed, and it may have moved memory the panels + // are showing, so surface both before returning to the caller + drain_output(); + refresh_frame_data(); + const std::string display = display_of(value); + // a pure statement (a plain assignment counts) yields no value to show, + // but it still ran and its side effects landed, so report success if (display.empty()) - return fail("'{}' has no value", text); + return std::format("{} applied", text); const std::string type = text_or(value.GetDisplayTypeName(), ""); |