[RTEMS Project] #2859: Implement POSIX Shared Memory Objects

[RTEMS trac]

#2859: Implement POSIX Shared Memory Objects
------------------------------+---------------------
 Reporter:  Gedare            |       Owner:  Gedare
     Type:  defect            |      Status:  new
 Priority:  normal            |   Milestone:  4.12.0
Component:  cpukit            |     Version:  4.12
 Severity:  normal            |  Resolution:
 Keywords:  POSIX-Compliance  |
------------------------------+---------------------

Comment (by Sebastian Huber):

 Test psxmmap01 fails with RTEMS_DEBUG:

 {{{
 *** BEGIN OF TEST PSX MMAP01 ***
 Init: mmap - map at zero

 Breakpoint 1, __assert_func (file=file at entry=0x2027fc8
 "../../cpukit/../../../erc32/lib/include/rtems/score/chainimpl.h",
 line=line at entry=686, func=func at entry=0x2029198 <__func__.2359>
 "_Chain_Append_unprotected", failedexpr=failedexpr at entry=0x20286e0
 "_Chain_Is_node_off_chain( the_node )") at
 ../../../../../../rtems/c/src/../../cpukit/libcsupport/src/__assert.c:37
 37      {
 (gdb) bt
 #0  __assert_func (file=file at entry=0x2027fc8
 "../../cpukit/../../../erc32/lib/include/rtems/score/chainimpl.h",
 line=line at entry=686, func=func at entry=0x2029198 <__func__.2359>
 "_Chain_Append_unprotected", failedexpr=failedexpr at entry=0x20286e0
 "_Chain_Is_node_off_chain( the_node )") at
 ../../../../../../rtems/c/src/../../cpukit/libcsupport/src/__assert.c:37
 #1  0x0200d688 in _Chain_Append_unprotected (the_node=0x2039450,
 the_chain=0x202f650 <mmap_mappings>) at
 ../../cpukit/../../../erc32/lib/include/rtems/score/chainimpl.h:686
 #2  0x0200d720 in _Chain_Append_unprotected (the_node=0x2039450,
 the_chain=0x202f650 <mmap_mappings>) at
 ../../../../../../rtems/c/src/../../cpukit/sapi/src/chainprotected.c:74
 #3  rtems_chain_append (chain=chain at entry=0x202f650 <mmap_mappings>,
 node=node at entry=0x2039450) at
 ../../../../../../rtems/c/src/../../cpukit/sapi/src/chainprotected.c:72
 #4  0x0200a634 in mmap (addr=addr at entry=0xfffff000, len=len at entry=4096,
 prot=prot at entry=7, flags=<optimized out>, flags at entry=4114,
 fildes=fildes at entry=-1, off=<optimized out>) at
 ../../../../../../rtems/c/src/../../cpukit/posix/src/mmap.c:373
 #5  0x020014cc in mmap_map_at_zero () at
 ../../../../../../../rtems/c/src/../../testsuites/psxtests/psxmmap01/init.c:100
 #6  POSIX_Init (argument=<optimized out>) at
 ../../../../../../../rtems/c/src/../../testsuites/psxtests/psxmmap01/init.c:324
 #7  0x0201be58 in _Thread_Entry_adaptor_pointer (executing=0x20318d8) at
 ../../../../../../rtems/c/src/../../cpukit/score/src/threadentryadaptorpointer.c:25
 #8  0x0201bed4 in _Thread_Handler () at
 ../../../../../../rtems/c/src/../../cpukit/score/src/threadhandler.c:88
 #9  0x0201be6c in _Thread_Handler () at
 ../../../../../../rtems/c/src/../../cpukit/score/src/threadhandler.c:38
 (gdb) frame 3
 #3  rtems_chain_append (chain=chain at entry=0x202f650 <mmap_mappings>,
 node=node at entry=0x2039450) at
 ../../../../../../rtems/c/src/../../cpukit/sapi/src/chainprotected.c:72
 72        _Chain_Append_unprotected( chain, node );
 (gdb) p *node
 $1 = {
   next = 0x202f654 <mmap_mappings+4>,
   previous = 0x202f650 <mmap_mappings>
 }
 }}}

--
Ticket URL: <http://devel.rtems.org/ticket/2859#comment:7>
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