ISAA generates NULL LET_EXPRS nodes

Bugzilla Link	1013
Created on	Aug 08, 2012 21:57
Version	svn
OS	Linux
Architecture	PC
Attachments	snprank.sac

Extended Description

Created an attachment (id=924)
source code to reproduce fault
******  _MAIN::main( hidden(1), hidden(2), hidden(0)): ...
           Inserting symbolic array attributes ...
           -> Running syntax tree checks
WARNING: mandatory son LET_EXPR is NULL
WARNING: mandatory son LET_EXPR is NULL
           Eliminating index vectors (split selections) ...
  Insufficient symbolic shape information available. Using explicit
  information to split index operation.
  Insufficient symbolic shape information available. Using explicit
  information to split index operation.
  Insufficient symbolic shape information available. Using explicit
  information to split index operation.
           -> Running syntax tree checks
           Eliminating common subexpressions ...
tree/traverse.c:67 Assertion "arg_node" failed!
OOOOOOOPS: TRAVdo() called with a NULL node!
apex@rattler:~/apex3/benchmks/snp$ 
apex@rattler:~/apex3/benchmks/snp$ sac2c snprank.sac -O3 -v1 -doawlf -nowlf  -maxwlur 1 -d treecheck -chkfreq 4 -v4
sac2c -V
sac2c v1.00-beta (Haggis And Apple)
 developer rev 18135 linux-gnu_x86_64
 (Tue Aug  7 17:55:58 EDT 2012 by sac)
snprank.sac is new, so I suspect this bug may have been around for
Many Moons.