Parser Rejects due to strange PCH interaction issues with Xcode

[llvmbot]

Bugzilla Link	3713
Resolution	FIXED
Resolved on	Feb 22, 2010 12:55
Version	unspecified
OS	MacOS X
Attachments	Failed Files
Reporter	LLVM Bugzilla Contributor
CC	@tkremenek

Extended Description

Received Parser Rejects on three files with build 167 of the scanner. I'm pretty sure these same files made it past build 163.

[llvmbot]

assigned to @tkremenek

[tkremenek]

Hi Dave,

I see the following error three times in the attached stderr.txt files:

:106:10: fatal error: '/var/folders/zz/zzzivhrRnAmviuee++-2xE++FDI/-Caches-/com.apple.Xcode.17653/SharedPrecompiledHeaders/Foundation-bnvyrixrdfxltndjgcryvccuzhdn/Foundation.h' file not found
#include "/var/folders/zz/zzzivhrRnAmviuee++-2xE++FDI/-Caches-/com.apple.Xcode.17653/SharedPrecompiledHeaders/Foundation-bnvyrixrdfxltndjgcryvccuzhdn/Foundation.h"

Is the name of the prefix file "Foundation.h"? How are you building your project? scan-build by default disables the use of PCH, so I'm not certain why you are seeing this issue.

I have no way to reproduce this error. A sample project that exhibits the problem might help if you can provide one (it probably just reduces to have a blank project that includes your given prefix header).

[tkremenek]

Dave: Can you retry with a newer version of the checker? I still haven't been able to reproduce your bug, but some recent changes to PTH in Clang may have fixed the issue.

[llvmbot]

I tried with 169 and was still seeing them. I'll try with something newer this afternoon.

[tkremenek]

This appears related to rdar://problem/6697335

[tkremenek]

I believe this issue is now fixed:

http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20090316/014240.html