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)