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GDB/MINGW interface Bug fix [message #44571]

Thu, 02 April 2015 09:35

omari
Messages: 264
Registered: March 2010

Experienced Member

Hi,

for the first time, I can use MINGW/GDB to compile and debug my application without crash.

there is two buges behind this crash
please, consider the application of this patch:

1 - file ide/Debuggers/Gdb_MI2Gdb.cpp line 173, in function MIValue Gdb_MI2::ReadGdb(bool wait)
replace

		dbg->Read(s);
		StringStream ss(s);

		String stmp;
		do
		{
			stmp = "";
			dbg->Read(stmp);
			s << stmp;
		} while(stmp.GetCount());
		StringStream ss(s);

read all available output from gdb process, because one call to gdb->Read return 1024 character max.

2 - file ide/Debuggers/MIValue.h/.cpp

replace "rval_" by "const &"

when theide is compiled with COMPILER_MSC, "rval_" is evaluated as "&" (it is the case for the binary distribution of theide i think)
then the priority of constructors is changed:in a call like this

MIValue v = MICmd("...");

MIValue(cons String&) is user by the compiler, instead of MIValue(MIValue&). (the MIValue is converted to String, then the constructor is called with the String as param)

NB:
this is the summary of the following threads

patch Gdb_MI parser :http://www.ultimatepp.org/forums/index.php?t=msg&th=925 9&start=0&

[BUG?] MIValue : http://www.ultimatepp.org/forums/index.php?t=msg&th=9260 &start=0&

regards
omari.

[Updated on: Thu, 02 April 2015 10:17]

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Re: GDB/MINGW interface Bug fix [message #44575 is a reply to message #44571]

Fri, 03 April 2015 16:55

omari
Messages: 264
Registered: March 2010

Experienced Member

Hi,

the first issue can be resolved in LocalProcess.cpp LocalProcess::Read2(), line 448 and 452 replacing "if" by "while" :

replace:

#ifdef PLATFORM_WIN32
	LLOG("LocalProcess::Read");
	bool was_running = IsRunning();
	char buffer[1024];
	dword n;
--->	if(hOutputRead && PeekNamedPipe(hOutputRead, NULL, 0, NULL, &n, NULL) && n &&
	   ReadFile(hOutputRead, buffer, sizeof(buffer), &n, NULL) && n)
		reso.Cat(buffer, n);

--->	if(hErrorRead && PeekNamedPipe(hErrorRead, NULL, 0, NULL, &n, NULL) && n &&
	   ReadFile(hErrorRead, buffer, sizeof(buffer), &n, NULL) && n)
		rese.Cat(buffer, n);

	if(convertcharset) {
		reso = FromOEMCharset(reso);
		rese = FromOEMCharset(rese);
	}
	
	return reso.GetCount() || rese.GetCount() || was_running;
#endif

#ifdef PLATFORM_WIN32
	LLOG("LocalProcess::Read");
	bool was_running = IsRunning();
	char buffer[1024];
	dword n;
--->	while(hOutputRead && PeekNamedPipe(hOutputRead, NULL, 0, NULL, &n, NULL) && n &&
	   ReadFile(hOutputRead, buffer, sizeof(buffer), &n, NULL) && n)
		reso.Cat(buffer, n);

--->	while(hErrorRead && PeekNamedPipe(hErrorRead, NULL, 0, NULL, &n, NULL) && n &&
	   ReadFile(hErrorRead, buffer, sizeof(buffer), &n, NULL) && n)
		rese.Cat(buffer, n);

	if(convertcharset) {
		reso = FromOEMCharset(reso);
		rese = FromOEMCharset(rese);
	}
	
	return reso.GetCount() || rese.GetCount() || was_running;
#endif

regards
omari.

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