Watch, Follow, &
Connect with Us
Public Report
Report From: Delphi-BCB/RTL/Delphi/Format + Float    [ Add a report in this area ]  
Report #:  101552   Status: Closed
[REGRESSION in XE2] Format function doesn't handle #0 characters
Project:  Delphi Build #:  16.0.4316.44803
Version:    16.2 Submitted By:   Stephen Millington
Report Type:  Basic functionality failure Date Reported:  12/5/2011 4:07:09 AM
Severity:    Serious / Highly visible problem Last Updated: 12/19/2012 8:01:04 PM
Platform:    All versions Internal Tracking #:   289067
Resolution: Fixed (Resolution Comments) Resolved in Build: : Update 4
Duplicate of:  None
Voting and Rating
Overall Rating: No Ratings Yet
0.00 out of 5
Total Votes: None
Description
After upgrading from Delphi 2007 to Delphi XE2 I have found that when using the Format function with %s then if the string contains #0 characters, only the characters up to the first #0 are returned. Delphi 2007 returned all the characters.

Added by Sysop
<<<<<<
ShowMessage(IntToStr(Length(str2)));
In Delphi 6, ... XE, it outputs 17.
But in Delphi XE2, it outputs 10.
Please see [Steps] for more details.
>>>>>>
Steps to Reproduce:
var
  str, str2: string;
  i: integer;
begin
  i := 10;
  str := 'hello' + #0 + ' world';
  str2 := format('%d - %s', [i, str]);
  ShowMessage(IntToStr(Length(str2)));
end;

In Delphi 2007/XE it outputs 17, but in Delphi XE2 it outputs 10.
Workarounds
instead of using the Format function do str2 := IntToStr(i) + ' - ' + str;
Attachment
None
Comments

Stephen Millington at 12/5/2011 8:31:49 AM -
It is not the Length function that is at fault, it is the Format function. I just included the call to the Length function to demonstrate the problem but if you look at the local variables window in the IDE for str2 after putting a breakpoint after the Format line you can see it has been truncated at the #0.

Tomohiro Takahashi at 12/5/2011 5:16:32 PM -
Thanks for the information.
I will check this issue with Delphi 6, 2007, 2009, 2010, XE, XE2...

Tomohiro Takahashi at 12/5/2011 5:51:36 PM -
Delphi 6, ... XE return 17 correctly.

Tomohiro Takahashi at 1/4/2012 10:56:18 PM -
We hope this issue will be fixed in next update release(e.g., Update 4).
Please stay tuned.

Server Response from: ETNACODE01