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Bug #2372

Updated by tuxillo about 2 years ago

The package devel/libsigsegv fails its final diagnostic test on DragonFly. 
 
 For information, this does pass on FreeBSD 9. 

 

 To repeat: 
 
 > cd /usr/pkgsrc/devel/libsigsegv 
 
 > bmake 
 
 > cd ${WRKOBJDIR}/devel/libsigsegv/work/libsigsegv-2.10/ 
 
 > gmake check 

 

 The output of the fifth test (out of five) should be: 
 
 | Starting recursion pass 1. 
 
 | Stack overflow 1 caught. 
 
 | Starting recursion pass 2. 
 
 | Stack overflow 2 caught. 
 
 | Segmentation violation correctly detected. 
 
 | Segmentation violation correctly detected. 
 
 | Test passed. 
 
 | PASS: stackoverflow2 

 

 The actual output is: 
 
 | Starting recursion pass 1. 
 
 | Stack overflow 1 caught. 
 
 | Starting recursion pass 2. 
 
 | Stack overflow 2 caught. 
 
 | Segmentation violation misdetected as stack overflow. 
 
 | Test passed. 
 
 | FAIL: stackoverflow2 

 

 The code of the test is here:  
  
 http://fossies.org/dox/libsigsegv-2.10/stackoverflow2_8c_source.html 

 

 What seems to be happening is that when the stack is exhausted, accessing an illegal memory location triggers the stack overflow handler before the sigsegv handler.    I think it's a DragonFly bug.

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