[Lazarus] RE : RE : RE:FPC_REQUIRES_PROPER_ALIGNMENTdefinedonSolariscausescrash in lazarus

[Ludo Brands]

> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 0x40c50070 (LWP 2095)]
> 0x005b0e8c in TREGEXPR__REGNEXT (P=0x4c697f22 <Address 
> 0x4c697f22 out of 
> bounds>, this=0x41916ba0)
>      at synregexpr.pas:2785
> 2785      offset := PRENextOff (p + REOpSz)^; //###0.933 inlined NEXT
> (gdb) bt
> #0  0x005b0e8c in TREGEXPR__REGNEXT (P=0x4c697f22 <Address 0x4c697f22 
> out of bounds>, this=0x41916ba0)
>      at synregexpr.pas:2785

Mark,

Attached is a patch to components/synedit/synregexpr.pas that fixes
alignment issues. I've tested the code against a test unit (attached) that
is a mix of fpc/packages/regexpr/examples/testreg1.pp and
Demos/SelfTest/TestRegExpr.drp (from the official TRegExpr package). The
result is the same for aligned and non-aligned platforms (error
120,121,122,123,124 and 703). This tests only that my changes have not
introduced a new bug, but, since I'm testing on Solaris x86, I can't be sure
that all data is aligned properly. It's possible I've missed something. I've
tried to set the AC cpu flag to force alignment checking but that generates
alignment errors in libc :(  

Could you please test this on one of your sparc/arm systems? 

Thanks, Ludo
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