Crash on Linux

[wombats]

Code that works fine on macOS and Windows crashes on Linux without even showing a PB debugger error. I used GDB to try and debug it and it gives me this error:

Thread 1 "Main" received signal SIGSEGV, Segmentation fault.
0x00007ffff5a75048 in __vfprintf_internal (s=s@entry=0x7fffff7ff270, format=format@entry=0x2473600 "%d:%lld:%lld", ap=ap@entry=0x7fffff7ff3f0, mode_flags=mode_flags@entry=0) at ./stdio-common/vfprintf-internal.c:1180
1180 ./stdio-common/vfprintf-internal.c: No such file or directory.

I'm using Qt. Is this something I can fix myself? I can't seem to recreate it in a small example. I googled vfprintf-internal.c and it came up with glibc, so I installed that, but it made no difference. I ran all of the commands in PureBasic's INSTALL file to make sure I hadn't missed anything, but everything's installed as far as I can see.

[infratec]

Does ldd, against your executable, show a missing library?

[wombats]

Does ldd, against your executable, show a missing library?

Thanks for replying. No, it's not showing any as not found.

[infratec]

Segmentation faults happens only if you are working with pointers or using / not using Free..().

Unfortunately without something to reproduice the fault is very difficult to find something.

Have you tried to run it in the ide with Purifier ON and

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PurifierGranularity(1, 1, 1, 1)

This should show you the point of failure.

[wombats]

Unfortunately, the Purifier didn't catch it, but I did figure it out. I had, for some reason, been updating scrollbars in a procedure that draws on a canvas. It seems Qt doesn't like that. Thanks for your suggestions.

[hamtronix]

I have same issue in Ubuntu Linux 22.04. Anything I try to compile under Linux ends with

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Segmentation fault (core dumped)

Even simple basic hello-world example ends with that. I don't get the point what is broken.
I am using older version 5.31 on my workstation with Ubuntu Linux 22.04 LTS. No idea why it's happening.
LDD and other stuff, useable by other programming languages, doesn't help.

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PureBasic 5.31 (Linux - x64) - (c) 2014 Fantaisie Software
A filename must be specified.
pbcompiler -h for help.

In addition this linker error is absolutelly not understandable for me.

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******************************************
PureBasic 5.31 (Linux - x64)
******************************************

Loading external modules...
Starting compilation...
Starting compilation...
7 lines processed.
Creating the executable.
Error: Linker
/usr/bin/ld: purebasic.o: warning: relocation in read-only section `.text'
/usr/bin/ld: purebasic.o: relocation R_X86_64_PC32 against symbol `exit@@GLIBC_2.2.5' can not be used when making a PIE object; recompile with -fPIE
/usr/bin/ld: final link failed: bad value
collect2: error: ld returned 1 exit status

To avoid this linker error, I found that following code will mitigate it, but it makes no sense to me. Code will be compiled, but result will stay the same.
( I mean "Segmentation fault (core dumped)" )

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Import "-no-pie"
EndImport 

Any advice will help. I like PureBasic, but this is strange.

[Fred]

Please use the lastest version to see if it still happens

[hamtronix]

With PureBasic v.6.04 it's all running smoothly. However, reason for v.5.31 is that I need to compile source file written in v.5.31 which is giving many errors by trying to compile it with v.6.04 compiler.

I got idea to try it inside virtualized environment with older Ubuntu Linux release corresponding the time when v.5.31 was released, maybe that will help.

Or some another idea ?

[mk-soft]

Which errors the. Perhaps there are not so many

[hamtronix]

I need to fix:
1, fix the old version of SHA1Fingerprint - this is done
2, remove the ascii requirement on compile and fix the unicode string
3, compile as true linux console application without the debugger
4, fix code bellow which causes problem with "InternetOpen_() is not a function, array, list, map or macro"

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 If proxy = "" : access_type =  #INTERNET_OPEN_TYPE_DIRECT : Else : access_type = #INTERNET_OPEN_TYPE_PROXY : EndIf
 If user_agent = "" : user_agent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)" : EndIf
   open_handle = InternetOpen_(user_agent, access_type, "", "", 0)

   InternetSetOption_(open_handle, 2, timeout, 4)

I am doing everything in shell command line, I don't have graphical user interface, just text shell console.
So I am compiling everything via pbcompiler command with input parameters like

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pbcompiler -e hello-world hello-world.pb

To solve point 1 was easy. Point 2 and 3 are unknown how to achieve it in Linux in command line just using pbcompiler and his command line parameters. I think I need to add/remove something inside that old source code from v.5.31 to achieve true Linux console application and no ascii requirement. Point 4 is releated to find replacement for Windows function and implement same functionality under Linux.

I will really appreciate advice from more experienced users.

[Fred]

You can't use old PB version on new linux distro because the binaries are not built for it.

[hamtronix]

Yes I agree, I have to run it on Linux from the time when it was released.
Thanks God we have virtualization.

I will try it on older Linux, but the point 4 is still questionable, how to get the same functionality.

[infratec]

Simply use the PB inbuild functions instead of this API stuff.

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