paweld/fpc
1
0
Fork 0
mirror of https://gitlab.com/freepascal.org/fpc/source.git synced 2025-08-10 22:26:00 +02:00
Code Issues Packages Projects Releases Wiki Activity

* check for-loop constants ranges

Browse Source
This commit is contained in:
peter 2005-02-03 17:10:58 +00:00
parent 8f2a768124
commit 16a60238c6
1 changed files with 24 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
compiler/pstatmnt.pas
View File

@ -276,6 +276,22 @@ implementation
function for_statement : tnode;
procedure check_range(hp:tnode);
begin
{$ifndef cpu64bit}
if hp.nodetype=ordconstn then
begin
if (tordconstnode(hp).value<low(longint)) or
(tordconstnode(hp).value>high(longint)) then
begin
CGMessage(parser_e_range_check_error);
{ recover, prevent more warnings/errors }
tordconstnode(hp).value:=0;
end;
end;
{$endif cpu64bit}
end;
var
hp,
hloopvar,
@ -387,6 +403,10 @@ implementation
hto:=comp_expr(true);
consume(_DO);
{ Check if the constants fit in the range }
check_range(hfrom);
check_range(hto);
{ first set the varstate for from and to, so
uses of loopvar in those expressions will also
trigger a warning when it is not used yet. This
@ -1157,7 +1177,10 @@ implementation
end.
{
$Log$
Revision 1.151 2005-01-31 20:23:53 peter
Revision 1.152 2005-02-03 17:10:58 peter
* check for-loop constants ranges
Revision 1.151 2005/01/31 20:23:53 peter
* set varstate before parsing the instruction block in for statements
Revision 1.150 2005/01/31 16:16:21 peter