Inline functions out variable of string bug
lazarus / 62-General

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Warfley · 2020-08-01 16:34

I've found a pretty weird bug when using inline functions:
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i program
Project1; {$mode objfpc}{$H+} procedure foo(out c: char);
inline;begin  c := #32;end; var s: String; begin  s:=#42;  foo(s[1]); 
Writeln(ord(s[1]));end. 
The contents of s does not change (i.e. the output is 42). When
removing the "inline" it works

Is this already known or shall I file a bug report? Also would be nice
if someone could reproduce this bug

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PascalDragon · 2020-08-01 17:09

I can reproduce it. Please report.

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Warfley · 2020-08-01 17:47

ok, reported

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jamie · 2020-08-01 19:32

I gave you a thank you btw..

I think it may have pointed me in a direction of a failing set of DLLS
I attempted to compile with 3.2.0 that didn't error out at compile or
runtime but just returned bad data and I do use code like that!
inlines with OUTS in an attempt to compress the baggage due to the
nature of the operations..


 I

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jamie · 2020-08-02 13:46

I found two places in the DLL's files where I use string operations
like that, removed the INLINE and those sections of code now works but
I still have corrupted data in other parts of the files and doing that
same type of code with dynamic arrays of byte seems to work ok using
the inline so I am still on a search for the remaining errors.

 To recap on the case, these files work perfectly with 3.0.4. I
switched to using inline coding because my older Delphi compiler
didn't have that so when I switched to fpc I had to do some coding in
an attempt to speed up the execution time because that was one of the
items I noticed was slower than Delphi's code.. I used the Delphi
DLL's for a while with Lazarus then fully compiled over to fpc because
I wanted to keep is fully fpc code compliant .