Dyson

Bug #163

Updated by Igor Pashev about 11 years ago

After this commit illumos-packaging:commit:0e39b90eab160820ae938fcb3ea27f056c482ef5 it is allowed to build PIE binaries, but such binaries cannot allocate memory. It probably probabrly because of wrong address of _END. 

 <pre> 
 $ cat malloc-pie.c 
 #include <stdlib.h> 

 int 
 main (int argc, char *argv[]) 
 { 
   return malloc (1024) == NULL; 
 } 

 $ gcc -pie -fpie malloc-pie.c -o malloc-pie   
 $ ./malloc-pie ; echo $? 
 1 

 $ gcc malloc-pie.c -o malloc-no-pie 
 $ ./malloc-no-pie ; echo $? 
 0 

 $ truss -o pie.log ./malloc-pie 
 $ grep brk pie.log  
 brk(0xFFFFFD7FFF400E30)                              Err#12 ENOMEM 

 $ truss -o no-pie.log ./malloc-no-pie 
 $ grep brk no-pie.log  
 brk(0x00600D50)                                      = 0 
 brk(0x00604D50)                                      = 0 

 </pre>

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