On Sun, 23 Sep 2012 17:29:23 +0200
Mattias Gaertner <nc-gaert...@netcologne.de> wrote:
> Hi,
>
> I was not able to reproduce the crash in a simple program. So I'm
> asking for help to create a good bug report.
>
> The crash happens in lazbuild only on powerpc 64bit Linux with fpc
> 2.6.0 and fpc 2.7.1. It works on Linux 32+64bit intel+amd and powerpc
> 32bit OS X with any fpc.
>
> The crashing line looks pretty common:
>
> IncludePath:=OnGetIncludePath(FullDir,false);
>
> OnGetIncludePath is a property:
>
> TOnGetIncludePath = function(const Directory: string; UseCache: boolean):
> string of object;
> property OnGetIncludePath: TOnGetIncludePath read fOnGetIncludePath write
> fOnGetIncludePath;
>
> Calling the method directly does not crash.
> Comparing the property and the address gives true:
>
> writeln('This gives true=',OnGetIncludePath =
> @CodeToolBoss.GetIncludePathForDirectory);
>
> Here is the assembler of the line
>
> # [1514] IncludePath:=OnGetIncludePath(FullDir,false);
> ld r3,152(r1)
> ld r3,184(r3)
> ld r5,184(r1)
> addi r4,r1,200
> li r6,0
> ld r7,152(r1)
> ld r30,176(r7)
> ld r31,0(r30)
> std r2,40(r1)
> mtctr r31
> ld r2,8(r30)
> ld r11,16(r30)
> bctrl
> ld r2,40(r1)
>
> And here is the assembler of the working call:
>
> # [1512] IncludePath:=CodeToolBoss.GetIncludePathForDirectory(FullDir);
> ld r5,184(r1)
> addi r4,r1,200
> lis r3,(U_CODETOOLMANAGER_CODETOOLBOSS)@highesta
> ori r3,r3,(U_CODETOOLMANAGER_CODETOOLBOSS)@highera
> sldi r3,r3,32
> oris r3,r3,(U_CODETOOLMANAGER_CODETOOLBOSS)@ha
> ld r3,(U_CODETOOLMANAGER_CODETOOLBOSS)@l(r3)
> li r6,1
> bl
> CODETOOLMANAGER_TCODETOOLMANAGER_$__GETINCLUDEPATHFORDIRECTORY$ANSISTRING$BOOLEAN$$ANSISTRING
> nop
I created a bug report.
http://bugs.freepascal.org/view.php?id=22958
Mattias
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