[fpc-devel] Strange problem with -M and -S command-line options

[Aleksa Todorovic]

Hi!

I've just hit this problem, and wanted to report it, so someone can
tell me if this is FPC or Lazarus bug.

==================
Compiler version: 2.2.2
Lazarus version: svn trunk (revision 16671)
Description: If -Sh is used before -Mobjfpc on command-line, string is
interpreted as ShortString, not AnsiString.
Usage problem: The latest version of Lazarus generates command-line
with -Sh option before -Mobjfpc.
Reproducability: Always
==================
program test_string;

var
  s1: AnsiString;
  s2: string;

begin
  s1 := 's1';
  WriteLn('s1 = ', s1, ' : ', SizeOf(s1));

  s2 := 's2';
  WriteLn('s2 = ', s2, ' : ', SizeOf(s2));
end.
==================
TEST RUN 1
Command-line: fpc -Mobjfpc test_string.pas
Output:
s1 = s1 : 4
s2 = s2 : 256
==================
TEST RUN 2
Command-line: fpc -Mobjfpc -Sh test_string.pas
Output:
s1 = s1 : 4
s2 = s2 : 4
==================
TEST RUN 3
Command-line: fpc -Sh -Mobjfpc test_string.pas
Output:
s1 = s1 : 4
s2 = s2 : 256
==================

As you can see, in the third case string is interpreted as
ShortString, not AnsiString. Is this intended behaviour of compiler,
or command-line processing bug?

Best,
Aleksa