[Bug tree-optimization/47896] wrong code with -O -fno-early-inlining -fipa-pta -fno-tree-dominator-opts -fno-tree-forwprop

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47896

--- Comment #1 from Zdenek Sojka <zsojka at seznam dot cz> 2011-02-26 23:16:32 UTC ---
Created attachment 23481
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23481
reduced testcase

$ g++ -O -fno-early-inlining -fipa-pta -fno-tree-dominator-opts
-fno-tree-forwprop pr47896.C             
$ ./a.out 
Aborted

At the assembly level, the problematic line seems to be:
    mov    DWORD PTR [rsp+32], 9    # i9,
which directly stores the constant 9, instead of the updated value 8.
It doesn't seem to crash when compiled as C code.