Re: [fpc-pascal] console gdb in mac
On 09/07/2014 05:42 PM, Felipe Monteiro de Carvalho wrote: On Sun, Sep 7, 2014 at 5:19 PM, Felipe Monteiro de Carvalho wrote: I'm trying to debug lcl-cocoa, but the debugger in the IDE is not helping (not stopping in breakpoints inside the LCL, can't read variable names, etc...) Well, I see now that IDE debugging generally works, but that reliably it stops working inside this function: function TCocoaWidgetSet.SetFocus(Handle: HWND): HWND; Breakpoint inside it works, but stepping / viewing values / any other action will crash gdb. Well, it was when I was working on Lazarus's cocoa-widgetset that I decided to make my own debugger. You can try that one. Only thing is that you have to sign your IDE. (Or fpd - the console version of the debugger), you have to use the Dwarf debug-format, and you have to run 'dsymutil' to create a .dSym-debug bundle for your application. If you want I can help you with that. regards, Joost. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] console gdb in mac
On 09/07/2014 05:19 PM, Felipe Monteiro de Carvalho wrote: Hello, I'm trying to debug lcl-cocoa, but the debugger in the IDE is not helping (not stopping in breakpoints inside the LCL, can't read variable names, etc...) So I moved to the console gdb, and I can already break, step over, etc. But, how to read variable names? I guess a wierd mangling will be involved here =) In particular, let's say I am here: procedure TControl.SetParent(NewParent: TWinControl); begin if FParent = NewParent then exit; <<--- here How can I read the value of field FParent which is located in object "Self" ? That's not that difficult: p this p this.fparent If it does not work, try 'THIS' and 'THIS.FPARENT'. Joost. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] console gdb in mac
Joost, I saw some of your posts but did not know that your debugger has a console version. Is it possible to connect to a gdb-server with fpd? Michael (not trying to hijack this thread) Am 08.09.14 um 17:39 schrieb Joost van der Sluis: On 09/07/2014 05:42 PM, Felipe Monteiro de Carvalho wrote: On Sun, Sep 7, 2014 at 5:19 PM, Felipe Monteiro de Carvalho wrote: I'm trying to debug lcl-cocoa, but the debugger in the IDE is not helping (not stopping in breakpoints inside the LCL, can't read variable names, etc...) Well, I see now that IDE debugging generally works, but that reliably it stops working inside this function: function TCocoaWidgetSet.SetFocus(Handle: HWND): HWND; Breakpoint inside it works, but stepping / viewing values / any other action will crash gdb. Well, it was when I was working on Lazarus's cocoa-widgetset that I decided to make my own debugger. You can try that one. Only thing is that you have to sign your IDE. (Or fpd - the console version of the debugger), you have to use the Dwarf debug-format, and you have to run 'dsymutil' to create a .dSym-debug bundle for your application. If you want I can help you with that. regards, Joost. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
[fpc-pascal] Unhandled Exception
I have an intermittant exception in my Lazarus app (Access violation) My app also uses a freepascal library - I think the problem is within it Can anybody suggest the best way to narrow this down to a unit / function / line ? I believe I have the Frame stack captured, but have no idea what to do with it I have read the wiki on logging exceptions, but this seems to only give me address info, and I cant figure how to translate this to something useful Thanks - SteveG ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Unhandled Exception
Steve Gatenby wrote: I have an intermittant exception in my Lazarus app (Access violation) My app also uses a freepascal library - I think the problem is within it Can anybody suggest the best way to narrow this down to a unit / function / line ? I believe I have the Frame stack captured, but have no idea what to do with it I have read the wiki on logging exceptions, but this seems to only give me address info, and I cant figure how to translate this to something useful Thanks - SteveG May I ask whether you have tried enabling the debugger option? Project Options->Debugging->Generate Debug info for GDB and then run the app within Lazarus. When the AV occurs, it shall stop within lazarus and you can then go to View->Debug Windows->Call Stacks to see where the AV occur. Dennis ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Unhandled Exception
On 09/09/14 11:44, Dennis Poon wrote: Steve Gatenby wrote: I have an intermittant exception in my Lazarus app (Access violation) My app also uses a freepascal library - I think the problem is within it Can anybody suggest the best way to narrow this down to a unit / function / line ? I believe I have the Frame stack captured, but have no idea what to do with it I have read the wiki on logging exceptions, but this seems to only give me address info, and I cant figure how to translate this to something useful Thanks - SteveG May I ask whether you have tried enabling the debugger option? Project Options->Debugging->Generate Debug info for GDB and then run the app within Lazarus. When the AV occurs, it shall stop within lazarus and you can then go to View->Debug Windows->Call Stacks to see where the AV occur. Dennis I do have it enabled, but haven't been able to catch it on my development machine (seems to happen mainly on the older production machines using our app) I am hoping to include code within our app to collect enough info to enable me to backtrace it somehow. Do you know if it is possible to gather information at the failure point (global exception handler) of a production system, and then input this to gdb (possibly on another machine) ? Thanks for your thoughts ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
