QualityCentral

Public Report

Report From: Delphi-BCB/RTL/Delphi/Thread support [ Add a report in this area ]

Report #: 18069

Status: Closed

(Pulled) Threadvar variables and DLLs do not mix. SysInit calls ExitThreadTLS before calling the user's DllProc. This means the DllProc c

Project: Delphi

Build #: 5.0.6.13

Version: 5.0

Submitted By: John Kaster

Report Type: Crash / Data loss / Total failure

Date Reported: 1/21/2000 12:00:00 AM

Severity: Serious / Highly visible problem

Last Updated: 3/20/2012 2:24:39 AM

Platform: All versions

Internal Tracking #: 79159

Resolution: Fixed (Resolution Comments)

Resolved in Build: : 10.0.2098.14501

Duplicate of: None

Voting and Rating

Overall Rating: No Ratings Yet

0.00 out of 5

Total Votes: None

Description

Threadvar variables and DLLs do not mix. SysInit calls ExitThreadTLS before calling the user's DllProc. This means the DllProc cannot use any threadvar variables.

Steps to Reproduce:

Build the attached project group.
Run the project from Delphi's IDE.
Click Begin Thread a couple times.
Select a thread and click End Thread.
The DLL reports a problem.
(Because the problem deals with uninitialized memory, it might work by mere coincidence. Running in the IDE reduces the chances that the TLS memory will remain untouched after it is freed.)

Workarounds

None

Attachment

Comments

None

Developer Tools

Database Tools