Hi,
the problem is that we special case constructors and avoid random seed on them 
on targets that have global ctors.
I think bootstrap with C++ or GO is broken for a while on targets not having 
ctor support, but now it broke
on targets with ctor support as a result of my patch renaming some of the ctors 
from GLOBAL__I into GLOBAL__sub_I.
The other is no longer special cased and thus get random seed.  I am testing 
the following patch and will commit
it as obvious if it passes.
Can someone, please, confirm that it fixes the reported bootstrap miscompare? I 
don't see it on my setup as everything
gets inlined for me in the testcases pointed out and the functions disappear.

Index: tree.c
===================================================================
--- tree.c      (revision 167819)
+++ tree.c      (working copy)
@@ -8518,8 +8518,12 @@ get_file_function_name (const char *type
     p = q = ASTRDUP (first_global_object_name);
   /* If the target is handling the constructors/destructors, they
      will be local to this file and the name is only necessary for
-     debugging purposes.  */
-  else if ((type[0] == 'I' || type[0] == 'D') && targetm.have_ctors_dtors)
+     debugging purposes. 
+     We also assign sub_I and sub_D sufixes to constructors called from
+     the global static constructors.  These are always local.  */
+  else if (((type[0] == 'I' || type[0] == 'D') && targetm.have_ctors_dtors)
+          || (type[0] == 's' && type[1]=='u' && type[2]=='b' && type[3]=='_'
+              && (type[4] == 'I' || type[4] == 'D')))
     {
       const char *file = main_input_filename;
       if (! file)

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