[LLVMbugs] [Bug 20003] New: Crashing on pthread_join

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=20003

            Bug ID: 20003
           Summary: Crashing on pthread_join
           Product: clang
           Version: 3.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: libclang
          Assignee: unassignedclangbugs at nondot.org
          Reporter: allan at comp.ufu.br
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 12638
  --> http://llvm.org/bugs/attachment.cgi?id=12638&action=edit
source code

I think this is a bug. The code sounds sound and it works normally if I compile
with GCC.

The source code is attached. The file `in` is above. Ex:

$ gcc -ggdb -pthread thread.c
$ ./a.out < in
1 2 3 
4 5 6 

7 8 
9 10 
11 12 

BEFORE SLEEP
AFTER SLEEP
AFTER JOIN
58 64 
139 154 

Count: 4
$ clang -ggdb -pthread thread.c
$ ./a.out < in 
1 2 3 
4 5 6 

7 8 
9 10 
11 12 

BEFORE SLEEP
AFTER SLEEP
Segmentation fault (core dumped)
$

I suppose this is an bug in clang.

OS: Ubuntu 12.04.4 fully updated (Linux hostname 3.2.0-64-generic #97-Ubuntu
SMP Wed Jun 4 22:04:21 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux)

clang: Ubuntu clang version 3.0-6ubuntu3 (tags/RELEASE_30/final) (based on LLVM
3.0) Target: x86_64-pc-linux-gnu Thread model: posix

Proc: Intel i5 4 "cores"

===== BEGIN FILE "IN" =====
2 3
1 2 3
4 5 6
3 2
7 8
9 10
11 12

====== END FILE ======

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