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* fixed web bug #1396: tpointerord is now a cardinal instead of a longint,

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but added a hack in ncnv so that pointer(-1) still works
This commit is contained in:
Jonas Maebe 2001-02-08 13:09:03 +00:00
parent 40104b2a7a
commit 74c1d32ce9
2 changed files with 33 additions and 5 deletions
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12
compiler/i386/cpuinfo.pas
View File

@ -37,7 +37,11 @@ Type
{ this must be an ordinal type with the same size as a pointer }
{ to allow some dirty type casts for example when using }
{ tconstsym.value }
TPointerOrd = longint;
{ Note: must be unsigned!! Otherwise, ugly code like }
{ pointer(-1) will result in a pointer with the value }
{ $fffffffffffffff on a 32bit machine if the compiler uses }
{ int64 constants internally (JM) }
TPointerOrd = cardinal;
Const
{ Size of native extended type }
@ -48,7 +52,11 @@ Implementation
end.
{
$Log$
Revision 1.1 2000-10-15 09:39:37 peter
Revision 1.2 2001-02-08 13:09:03 jonas
* fixed web bug 1396: tpointerord is now a cardinal instead of a longint,
but added a hack in ncnv so that pointer(-1) still works
Revision 1.1 2000/10/15 09:39:37 peter
* moved cpu*.pas to i386/
* renamed n386 to common cpunode

26
compiler/ncnv.pas
View File

@ -96,7 +96,7 @@ implementation
{$else newcg}
hcodegen,
{$endif newcg}
htypechk,pass_1,cpubase;
htypechk,pass_1,cpubase,cpuinfo;
function gentypeconvnode(node : tnode;t : pdef) : ttypeconvnode;
@ -657,7 +657,23 @@ implementation
first_cord_to_pointer:=nil;
if left.nodetype=ordconstn then
begin
t:=genpointerconstnode(tordconstnode(left).value,resulttype);
{ check if we have a valid pointer constant (JM) }
if (sizeof(tordconstnode) > sizeof(tpointerord)) then
if (sizeof(tpointerord) = 4) then
begin
if (tordconstnode(left).value < low(longint)) or
(tordconstnode(left).value > high(cardinal)) then
CGMessage(parser_e_range_check_error);
end
else if (sizeof(tpointerord) = 8) then
begin
if (tordconstnode(left).value < low(int64)) or
(tordconstnode(left).value > high(qword)) then
CGMessage(parser_e_range_check_error);
end
else
internalerror(2001020801);
t:=genpointerconstnode(tpointerord(tordconstnode(left).value),resulttype);
firstpass(t);
first_cord_to_pointer:=t;
exit;
@ -1203,7 +1219,11 @@ begin
end.
{
$Log$
Revision 1.16 2000-12-31 11:14:10 jonas
Revision 1.17 2001-02-08 13:09:03 jonas
* fixed web bug 1396: tpointerord is now a cardinal instead of a longint,
but added a hack in ncnv so that pointer(-1) still works
Revision 1.16 2000/12/31 11:14:10 jonas
+ implemented/fixed docompare() mathods for all nodes (not tested)
+ nopt.pas, nadd.pas, i386/n386opt.pas: optimized nodes for adding strings
and constant strings/chars together