Inline functions out variable of string bug

[Warfley]

I've found a pretty weird bug when using inline functions:

Code: Pascal  [Select][+][-]

1. program Project1;
2.  
3. {$mode objfpc}{$H+}
4.  
5. procedure foo(out c: char); inline;
6. begin
7.   c := #32;
8. end;
9.  
10. var s: String;
11.  
12. begin
13.   s:=#42;
14.   foo(s[1]);
15.   Writeln(ord(s[1]));
16. 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

[PascalDragon]

I can reproduce it. Please report.

[Warfley]

ok, reported

[jamie]

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

[jamie]

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 .