[Bug tree-optimization/32722] New: [4.3 Regression] Bootstrap failure with -fno-tree-store-copy-prop

["rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Bootstrap fails compiling tree-ssa-structalias.c with a verify_ssa failure:

../../gcc/gcc/tree-ssa-structalias.c: In function 'build_pred_graph':
../../gcc/gcc/tree-ssa-structalias.c:940: error: definition in block 5 follows
the use
for SSA_NAME: D.36231_29 in statement:
D.36230_26 = D.36231_29;
../../gcc/gcc/tree-ssa-structalias.c:940: internal compiler error: verify_ssa
failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

this doesn't reduce easily but with --param ggc-min-expand=0 --param
ggc-min-heapsize=0 so this is likely GC related.  

See also PR32636 for a similar issue that got latent again.

Testcase is still reducing.


-- 
           Summary: [4.3 Regression] Bootstrap failure with -fno-tree-store-
                    copy-prop
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code, GC
          Severity: normal
          Priority: P3
         Component: tree-optimization
        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=32722