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Debugger: fix crash if search for parent-fp is aborted (dcsCanceled, DebuggerState=dsError)

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git-svn-id: trunk@42178 -
This commit is contained in:
martin 2013-07-23 03:09:47 +00:00
parent e02c8ef2c8
commit a61f67bb91
1 changed files with 28 additions and 1 deletions
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29
debugger/gdbmidebugger.pp
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@ -1190,6 +1190,7 @@ type
private
FCommandList: TList;
FParentFPList: Array of TGDBMIDebuggerParentFrameCache;
FParentFPListChangeStamp: Integer;
procedure DoEvaluationDestroyed(Sender: TObject);
protected
function GetParentFPList(AThreadId: Integer): PGDBMIDebuggerParentFrameCache;
@ -1197,6 +1198,7 @@ type
procedure Changed;
procedure Clear;
procedure InternalRequestData(AWatchValue: TCurrentWatchValue); override;
property ParentFPListChangeStamp: Integer read FParentFPListChangeStamp;
public
constructor Create(const ADebugger: TDebugger);
destructor Destroy; override;
@ -6365,6 +6367,7 @@ begin
DoChange(FSourceIndex[n]);
FSourceIndex.Clear;
//FRequestedSources.Clear;
end;
procedure TGDBMILineInfo.AddInfo(const ASource: String; const AResult: TGDBMIExecResult);
@ -7990,7 +7993,8 @@ begin
dcEnvironment: Result := GDBEnvironment(String(AParams[0].VAnsiString), AParams[1].VBoolean);
dcDisassemble: Result := GDBDisassemble(AParams[0].VQWord^, AParams[1].VBoolean, TDbgPtr(AParams[2].VPointer^),
String(AParams[3].VPointer^), String(AParams[4].VPointer^),
String(AParams[5].VPointer^), Integer(AParams[6].VPointer^));
String(AParams[5].VPointer^), Integer(AParams[6].VPointer^))
{%H-};
dcStepOverInstr: Result := GDBStepOverInstr;
dcStepIntoInstr: Result := GDBStepIntoInstr;
{$IFDEF DBG_ENABLE_TERMINAL}
@ -9375,6 +9379,10 @@ end;
procedure TGDBMIWatches.DoStateChange(const AOldState: TDBGState);
begin
SetLength(FParentFPList, 0);
if FParentFPListChangeStamp = high(FParentFPListChangeStamp) then
FParentFPListChangeStamp := low(FParentFPListChangeStamp)
else
inc(FParentFPListChangeStamp);
inherited DoStateChange(AOldState);
end;
@ -12426,6 +12434,17 @@ var
end;
function SelectParentFrame(var aFrameIdx: Integer): Boolean;
var
CurPFPListChangeStamp: Integer;
function ParentSearchCanContinue: Boolean;
begin
Result :=
(not (dcsCanceled in SeenStates)) and
(CurPFPListChangeStamp = TGDBMIWatches(FTheDebugger.Watches).ParentFPListChangeStamp) and // State changed: FrameCache is no longer valid
(FTheDebugger.State <> dsError);
end;
var
R: TGDBMIExecResult;
List: TGDBMINameValueList;
@ -12435,6 +12454,8 @@ var
ParentFpNum, FpNum, FpDiff, LastFpDiff: QWord;
FpDir: Integer;
begin
Result := False;
CurPFPListChangeStamp := TGDBMIWatches(FTheDebugger.Watches).ParentFPListChangeStamp;
if FWatchValue <> nil
then ThreadId := FWatchValue.ThreadId
else ThreadId := FTheDebugger.FCurrentThreadId;
@ -12460,6 +12481,8 @@ var
List := TGDBMINameValueList.Create(R);
ParentFP := List.Values['value'];
end;
if not ParentSearchCanContinue then
exit;
if ParentFp = '' then begin
FrameCache^.ParentFPList[aFrameIdx].parentfp := '-'; // mark as no parentfp
Exit(False);
@ -12499,6 +12522,8 @@ var
FrameCache^.ParentFPList[aFrameIdx].Fp := '-'; // mark as no Fp (not accesible)
Exit(False);
end;
if not ParentSearchCanContinue then
exit;
FStackFrameChanged := True; // Force UnSelectContext() to restore current frame
FTheDebugger.FInternalStackFrame := aFrameIdx;
@ -12509,6 +12534,8 @@ var
FrameCache^.ParentFPList[aFrameIdx].Fp := '-'; // mark as no Fp (not accesible)
Exit(False);
end;
if not ParentSearchCanContinue then
exit;
List.Init(R.Values);
Fp := List.Values['value'];
if Fp = ''