[Issue 5484] GC segfaults on FreeBSD 64 / scanning issues for .data and .bss sections

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=5484


Brad Roberts <braddr at puremagic.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |braddr at puremagic.com
           Platform|All                         |x86_64
           Severity|normal                      |critical


--- Comment #2 from Brad Roberts <braddr at puremagic.com> 2011-05-22 22:19:02 PDT ---
Here's the change I'm proposing for druntime, based on your previous data and
from inspection of current binaries.  So far, testing looks promising:

diff --git a/src/rt/memory.d b/src/rt/memory.d
index ccf3c57..b32dfab 100644
--- a/src/rt/memory.d
+++ b/src/rt/memory.d
@@ -202,8 +202,19 @@ private
         {
             extern __gshared
             {
-                int etext;
-                int _end;
+                size_t etext;
+                size_t _end;
+            }
+        }
+        version (X86_64)
+        {
+            extern (C)
+            {
+                extern __gshared
+                {
+                    size_t _deh_end;
+                    size_t __progname;
+                }
             }
         }
     }
@@ -237,7 +248,8 @@ void initStaticDataGC()
     }
     else version( FreeBSD )
     {
-        gc_addRange( &etext, cast(size_t) &_end - cast(size_t) &etext );
+        gc_addRange( &etext, cast(size_t) &_deh_end - cast(size_t) &etext );
+        gc_addRange( &__progname, cast(size_t) &_end - cast(size_t)
&__progname );
     }
     else version( Solaris )
     {

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