[Bug c++/34850] New: Recursive BLOCK tree

[rguenth at gcc dot gnu dot org]

Compilation of the attached testcase hangs in 

0x000000000056aedc in cp_print_error_function (context=0x15c5a60, 
    diagnostic=0x7fff955f6c30)
    at /space/rguenther/src/svn/trunk/gcc/cp/error.c:2426
2426                      while (TREE_CODE (ao) == BLOCK &&
BLOCK_ABSTRACT_ORIGIN (ao))
2427                        ao = BLOCK_ABSTRACT_ORIGIN (ao);

because BLOCK_ABSTRACT_ORIGIN (ao) == ao.

If you build with -O2 -g.  Building without -g fixes the problem
(possibly the BLOCK is thrown away as unused).


-- 
           Summary: Recursive BLOCK tree
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: compile-time-hog
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rguenth at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34850