Hi.
After a few hours with gdb was isolated errors and strangeness in compiler at work with variants:
Example:
function c(const vv: variant): variant;
begin
result := vv;
end;
function b(vv: variant): variant;
begin
result := vv;
end;
function a(var vv: variant): variant;
begin
result := vv;
end;
procedure start;
var
v, v1: Variant;
begin
v := VarArrayCreate([0, 0], varVariant);
a(v);
//if variant result of a() isn't assigned, fpc_finalize() at end of a(v)
//destroys temporary result. But when start() ends fpc_finalize() tryes
//to destroy it again
b(v);
//if b() is called then variant param is copied but not whole (deeply), vv.varray
//points to the same place as v.array. At end of b(v) is pointer
//vv.array destroyed by fpc_decref() and then v.array points to the
//destroyed memory
c(v);
//At the start of func c() is v copied to the vv deeply but i think
//that behaviour of "var" and "const" calling should be the same (by
//reference) not vy value like c()
end;I try to understand compiler code and repair it, but this is "very long distance race". But like I see the responses to my previous reports (absolutely no interest), this will be fastest solution :(. Really here isn't anybody who understand to compiler code and help me with repair? Or is anywhere another e-mail list or another comunication channel where i can talk about this problem?
Petr
Ing. Petr Kristan
.
EPOS PRO s.r.o., Bozeny Nemcove 2625, 530 02 Pardubice
tel: +420 466335223 Czech Republic (Eastern Europe)
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