[Bug tree-optimization/46130] [4.6 Regression] ICE: SIGSEGV in walk_stmt_load_store_addr_ops (gimple.c:4894) with -O2 -fno-tree-dce

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46130

--- Comment #1 from Zdenek Sojka <zsojka at seznam dot cz> 2010-10-22 13:48:55 UTC ---
Created attachment 22118
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22118
another testcase

This testcase is shorter and doesn't take address of an function, but it needs
-flto

$ gcc -O2 -flto -fno-tree-dce pr46130-2.c
==30450== Invalid read of size 2
==30450==    at 0x6EA541: walk_stmt_load_store_addr_ops (gimple.c:4894)
==30450==    by 0xAAB87A: rebuild_cgraph_edges (cgraphbuild.c:471)
==30450==    by 0x796C5E: execute_one_pass (passes.c:1560)
==30450==    by 0x796EF4: execute_pass_list (passes.c:1615)
==30450==    by 0x79616B: do_per_function_toporder (passes.c:1153)
==30450==    by 0x7973A5: execute_ipa_pass_list (passes.c:1932)
==30450==    by 0xAB09D7: cgraph_optimize (cgraphunit.c:1696)
==30450==    by 0xAB0B99: cgraph_finalize_compilation_unit (cgraphunit.c:1016)
==30450==    by 0x4ABB8B: c_write_global_declarations (c-decl.c:9828)
==30450==    by 0x88A553: toplev_main (toplev.c:931)
==30450==    by 0x658ABBC: (below main) (in /lib64/libc-2.11.2.so)
==30450==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
==30450== 
pr46130-2.c: In function 'foo':
pr46130-2.c:8:1: internal compiler error: Segmentation fault
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