[llvm-bugs] [Bug 26212] New: LLVM Windows 64 bit installer overrides values from the 32 bit installer

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=26212

            Bug ID: 26212
           Summary: LLVM Windows 64 bit installer overrides values from
                    the 32 bit installer
           Product: Packaging
           Version: unspecified
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: Windows Installer
          Assignee: unassignedbugs at nondot.org
          Reporter: cristian.adam at gmail.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

I have downloaded the official LLVM 3.7.1 32 and 64 bit windows installers.

Environment: Windows 10 64 bit.

First I have installed the 32 bit LLVM 3.7.1. The following registry key
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\LLVM\LLVM had the default value set to:
"C:\Program Files (x86)\LLVM"

Then I have installed the 64 bit LLVM 3.7.1. The first thing that popped up was
this dialog:

---------------------------
LLVM Setup
---------------------------
LLVM is already installed. 

Do you want to uninstall the old version before installing the new one?
---------------------------
Yes   No   Cancel   
---------------------------

I have clicked on "No". 

The registry key HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\LLVM\LLVM defaul t
value was changed to "C:\Program Files\LLVM".

Please make sure that the 64 bit installer checks and writes to the 64 bit
registry "HKEY_LOCAL_MACHINE\SOFTWARE\LLVM\LLVM".

These paths are needed by tools to query the existence of LLVM on Windows.

For more information see: 
http://nsis.sourceforge.net/Reference/SetRegView

and the x64.nsh NSIS include
http://forums.winamp.com/showthread.php?threadid=301724

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