Qt app for windows XP

ODБOï · 5 Jun 2020, 10:59

I have used Qt5.6 and mingw49_32 to compile my QtQuick application for windows XP as suggested here : https://forum.qt.io/topic/115540/qt-app-for-windows-xp

now my application runs on XP but before the app startup i get this error message :

the procedure entry point sprintf_s could not be located in msvcrt.dll

if i press OK button application starts and seems to work normally.

Haw can i get ride of this error message ?
thx

JonB · 6 May 2020, 10:59

@LeLev said in Qt app for windows XP:

the procedure entry point sprintf_s could not be located in msvcrt.dll

I think this is/might be to do with the patch level of your Windows XP. Read https://stackoverflow.com/questions/54701954/the-procedure-entry-point-sprintf-s-could-not-be-located-in-dll, and act on the last post there, https://stackoverflow.com/a/54731890/489865?

ODБOï · 5 Jun 2020, 12:00

@JonB hi, thanks for answering
@JonB said in Qt app for windows XP:

patch level

this is a windows xp pro version 2002 SP3
on a CNC machine, it can not be updated/is never Updated and not connected to internet.

Do you think that error can introduce bugs in the application itself ? In my opinion it should not because sprintf_s is just a printing method.

Should i try to find a workaround to just hide that error ..?

jsulm · 5 Jun 2020, 12:11

@LeLev I think this DLL is from "Microsoft Visual C++ Runtime". You could try to update it from here https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

hskoglund · 5 Jun 2020, 12:23

You can try this workaround, place it on top of mainwindow.h:

#define sprintf_s _snprintf

For a long-term solution, it might be safer to use MSVC2013 instead of MinGW49_32.

ODБOï · J jsulm 5 Jun 2020, 12:00

@jsulm ok thank you
normally i am not supposed to do any updates/changes in the system but i will see it with my hierarchical superior i guess...

ODБOï · 5 Jun 2020, 12:33

@hskoglund hi,

@hskoglund said in Qt app for windows XP:

#define sprintf_s _snprintf

thank you for this suggestion
This is a QtQuick QML application so i dont have mainwindow.h, i tryed to put that ligne in my main.cpp but i still have the error, Is there maybe a way to define it in my project file or somewhere else ?

JonB · 6 May 2020, 12:34

@LeLev
I am not convinced you will be able to resolve this via compile-time #define. The implication of

the procedure entry point sprintf_s could not be located in msvcrt.dll

is that it might be being loaded dynamically via LoadLibraray()/GetProcAddress().

Have you tried/are you allowed to try @jsulm's suggestion of getting a better version of msvcrt.dll? That would be preferable. How many copies of that file do you have on your system (there may be multiple), and what is their exact version (you can see that from File Explorer Properties)?

hskoglund · wrote on 5 Jun 2020, 12:34

Yeah, it's much better to put it the .pro file, try:

DEFINES += "sprintf_s=_snprintf"

ODБOï · 6 May 2020, 13:21

@JonB said in Qt app for windows XP:

Have you tried/are you allowed to try @jsulm's suggestion of getting a better version of msvcrt.dll?

my superior will be back on Monday so sadely i can't try that for the moment..

@JonB said in Qt app for windows XP:

How many copies of that file do you have on your system

i found one in folder c:\windows\system32 , the version is 7.0.2600.5512
not sure how to search/find the others, im trying to find out
edit: searching in progress using XP search tool

i have 5 in total :
versions
7.0.2600.5512
7.0.2600.0
7.0.2600.5512
6.0.8337.0

@hskoglund said in Qt app for windows XP:

DEFINES += "sprintf_s=_snprintf"

unfortunately this still does not solve the issue

JonB · 6 May 2020, 13:26

@LeLev said in Qt app for windows XP:

i found one in folder c:\windows\system32 , the version is 7.0.2600.5512

Based on nothing, my Windows 7 one is 7.0.7601.17704, dated 16/12/2011. It shows there does at least exist a later one, though how that relates to XP I don't know.

If you know how to use a tool to look at what functions are in/exported from a DLL, you could verify that sprintf_s is indeed missing in yours.

normally i am not supposed to do any updates/changes in the system but i will see it with my hierarchical superior i guess...

I still maintain that the most likely is the SO post I pointed you at earlier. I point you at https://answers.microsoft.com/en-us/windows/forum/all/xp-sp3-update-021319-posready-2009-caused-a/d4546883-2d07-4688-b00d-4c74801b65cb or https://community.teamviewer.com/t5/General-Questions/XP-and-Teamviewer/td-p/54530 too, which I think is the same thing. At least whether you have those patches? Show this to your "hierarchical superior" :)

Otherwise, it could be a MinGW issue. Can't find exact match, but https://stackoverflow.com/questions/30590421/qt-5-4-0-deployment-issue-missing-vsprintf-s-in-msvcrt-dll/32320444.

ODБOï · 6 May 2020, 13:13

@JonB said in Qt app for windows XP:

you have those patches?

i try to see patches list using systeminfo.exe in terminal

it returns :

1 Hotfix installed : Q147222

ODБOï · 5 Jun 2020, 13:49

downloading
http://download.qt.io/new_archive/qt/5.6/5.6.0/qt-opensource-windows-x86-msvc2013-5.6.0.exe.mirrorlist
to give it a try

hskoglund · 5 Jun 2020, 13:52

@LeLev Don't forget that line in your .pro file:

QMAKE_LFLAGS_WINDOWS = /SUBSYSTEM:WINDOWS,5.01

P.S. Just tried an empty vanilla Qt 5.6.3 MinGW49_32 QtQuick QML project (where you see Hello World in the middle of 640x480 window. Built on Windows 10 and tested on Windows XP, worked fine without that sprintf_s error, the msvcrt.dll on that Windows XP has version 7.0.2600.5512.

Anyway, since MSVC2013 is Microsoft own stuff, it's more likely to survive as the years go by :-)

JonB · wrote on 5 Jun 2020, 13:52

@hskoglund said in Qt app for windows XP:

worked fine without that sprintf_s error, the msvcrt.dll on that Windows XP has version 7.0.2600.5512.

That should be interesting reading for @LeLev !

hskoglund · 5 Jun 2020, 13:59

That misbehaved update from Microsoft last year which caused the sprintf_s error, it seems not to have touched msvcrt.dll directly, but rather some other files, but msvcrt.dll got the raw deal :-(

msvcrt.dll is somewhat of an unwanted child from Microsoft's point of view, for example here's what Raymond Chen writes: https://devblogs.microsoft.com/oldnewthing/20140411-00/?p=1273

ODБOï · 6 May 2020, 14:01

guys thank you very much for help and thank you for your time

ODБOï · wrote on 5 Jun 2020, 14:23

@hskoglund said in Qt app for windows XP:

for example here's what Raymond Chen writes: https://devblogs.microsoft.com/oldnewthing/20140411-00/?p=1273

a real nightmare the story of this dll, just like my day ^^

ODБOï · wrote on 5 Jun 2020, 14:38

@hskoglund said in Qt app for windows XP:

Don't forget that line in your .pro file:
QMAKE_LFLAGS_WINDOWS = /SUBSYSTEM:WINDOWS,5.01

i have error in compilation output saying
g++: error: /SUBSYSTEM:WINDOWS,5.01: No such file or directory

if i add this to my pro file
QMAKE_LFLAGS_WINDOWS = /SUBSYSTEM:WINDOWS,5.01

hskoglund · 6 May 2020, 14:42

That line is only applicable if you use the MSVC2013 compiler

Edit: to satisfy both compilers, we can use a prefix, change the line to

win32-msvc:QMAKE_LFLAGS_WINDOWS = /SUBSYSTEM:WINDOWS,5.01