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[Pnet-developers] [bugs #10917] libjit convert to int bug patch
From: |
Evin Robertson |
Subject: |
[Pnet-developers] [bugs #10917] libjit convert to int bug patch |
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This mail is an automated notification from the bugs tracker
of the project: DotGNU Portable.NET.
/**************************************************************************/
[bugs #10917] Full Item Snapshot:
URL: <http://savannah.gnu.org/bugs/?func=detailitem&item_id=10917>
Project: DotGNU Portable.NET
Submitted by: Evin Robertson
On: Fri 11/05/04 at 05:35
Category: None
Severity: 5 - Average
Item Group: None
Resolution: None
Privacy: Public
Assigned to: None
Status: Open
Summary: libjit convert to int bug patch
Original Submission: Similar in symptom to the previous bug. If a write is
made from one global variable to another, the type of the source might be used
instead of the type of the destination.
The problem is that jit_insn_store_relative determines its mode of operation
from the source value. So the first problem is that dpas does not run
jit_insn_convert on the source value to give the store enough information.
The second problem is that jit_insn_convert does not work properly when going
from an unsigned byte to an integer. The value returned is the original value
without the correct type.
A patch is attached which corrects both problems. Probably other CVT_NONE
values should be replaced as well.
Because every call to jit_insn_store_relative will likely be preceded by a
jit_insn_convert, perhaps it should be modified to take an extra parameter
giving the destination type.
program loadb;
Var
a : Byte;
b : Integer;
Procedure run;
Var x : Integer;
begin
b := a;
x := a;
WriteLn(a);
WriteLn(b);
WriteLn(x);
end;
begin
a := 250;
b := -1;
run;
end.
File Attachments
-------------------
-------------------------------------------------------
Date: Fri 11/05/04 at 05:35 Name: jit.patch Size: 676B By: evin
http://savannah.gnu.org/bugs/download.php?item_id=10917&item_file_id=1841
For detailed info, follow this link:
<http://savannah.gnu.org/bugs/?func=detailitem&item_id=10917>
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- [Pnet-developers] [bugs #10917] libjit convert to int bug patch,
Evin Robertson <=