[Bug tree-optimization/26169] [4.2 Regression] ICE in duplicate_ssa_name

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

------- Comment #1 from pinskia at gcc dot gnu dot org  2006-02-08 04:20 -------
Compile that testcase with -O2 and you will recieve an ICE.
Backtrace:
#0  internal_error (gmsgid=0x9a973c "tree check: %s, have %s in %s, at %s:%d")
at /Users/pinskia/src/gcc/local/gcc/gcc/diagnostic.c:586
#1  0x002c8280 in tree_check_failed (node=0x42caf5e4, file=0x9aac6c
"/Users/pinskia/src/gcc/local/gcc/gcc/tree-ssanames.c", line=247,
function=0x9aacd8 "duplicate_ssa_name") at
/Users/pinskia/src/gcc/local/gcc/gcc/tree.c:6034
#2  0x002f77d0 in duplicate_ssa_name (name=0x42caf5e4, stmt=0x42cb418c) at
/Users/pinskia/src/gcc/local/gcc/gcc/tree-ssanames.c:247
#3  0x006650b8 in create_new_def_for (old_name=0x42caf5e4, stmt=0x42cb418c,
def=0x42cb0534) at /Users/pinskia/src/gcc/local/gcc/gcc/tree-into-ssa.c:2241
#4  0x0047d2dc in tree_duplicate_bb (bb=0x42c15528) at
/Users/pinskia/src/gcc/local/gcc/gcc/tree-cfg.c:4341
#5  0x004870b4 in duplicate_block (bb=0x42c15528, e=0x0, after=0x0) at
/Users/pinskia/src/gcc/local/gcc/gcc/cfghooks.c:716
#6  0x008f0adc in create_block_for_threading (bb=0x42c15528, rd=0x41e011c0) at
/Users/pinskia/src/gcc/local/gcc/gcc/tree-ssa-threadupdate.c:210
#7  0x008f0ec8 in create_duplicates (slot=0x41e05eb8, data=0xbffff640) at
/Users/pinskia/src/gcc/local/gcc/gcc/tree-ssa-threadupdate.c:350
#8  0x009744d4 in htab_traverse_noresize (htab=0x9a973c, callback=0x8f0e58
<create_duplicates>, info=0xbffff640) at
/Users/pinskia/src/gcc/local/gcc/libiberty/hashtab.c:729
#9  0x008f1910 in thread_block (bb=0x42c15528) at
/Users/pinskia/src/gcc/local/gcc/gcc/tree-ssa-threadupdate.c:790
#10 0x008f1ba0 in thread_through_all_blocks () at
/Users/pinskia/src/gcc/local/gcc/gcc/tree-ssa-threadupdate.c:872
#11 0x0072e418 in finalize_jump_threads () at
/Users/pinskia/src/gcc/local/gcc/gcc/tree-vrp.c:4361
#12 0x0072e814 in execute_vrp () at
/Users/pinskia/src/gcc/local/gcc/gcc/tree-vrp.c:4502


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |law at gcc dot gnu dot org
 GCC target triplet|                            |powerpc-darwin7.9.0
   Target Milestone|---                         |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26169