http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47389
--- Comment #4 from Zdenek Sojka <zsojka at seznam dot cz> 2011-01-24 13:21:50 UTC --- Created attachment 23096 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23096 short C testcase $ gcc -O -fno-combine-stack-adjustments -fno-dse -fno-guess-branch-probability -foptimize-sibling-calls testcase.c testcase.c: In function 'foo': testcase.c:15:1: internal compiler error: in calc_dfs_tree, at dominance.c:395 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. Backtrace is similiar to the one in comment #0: (gdb) bt #0 fancy_abort (file=0x10d3be8 "/mnt/svn/gcc-trunk/gcc/dominance.c", line=395, function=0x10d3ca5 "calc_dfs_tree") at /mnt/svn/gcc-trunk/gcc/diagnostic.c:892 #1 0x00000000006350d3 in calc_dfs_tree (di=0x7fffffffd4a0, reverse=0 '\000') at /mnt/svn/gcc-trunk/gcc/dominance.c:395 #2 0x00000000006369e0 in calculate_dominance_info (dir=CDI_DOMINATORS) at /mnt/svn/gcc-trunk/gcc/dominance.c:656 #3 0x00000000005eccad in flow_loops_find (loops=0x7ffff5d3bc60) at /mnt/svn/gcc-trunk/gcc/cfgloop.c:386 #4 0x00000000007aa7ef in loop_optimizer_init (flags=16) at /mnt/svn/gcc-trunk/gcc/loop-init.c:52 #5 0x0000000000fe7546 in if_convert () at /mnt/svn/gcc-trunk/gcc/ifcvt.c:4241 #6 0x0000000000fe8fe9 in rest_of_handle_if_after_reload () at /mnt/svn/gcc-trunk/gcc/ifcvt.c:4418 #7 0x00000000007f1ba6 in execute_one_pass (pass=0x1610400) at /mnt/svn/gcc-trunk/gcc/passes.c:1562 #8 0x00000000007f1ea5 in execute_pass_list (pass=0x1610400) at /mnt/svn/gcc-trunk/gcc/passes.c:1617 #9 0x00000000007f1eb7 in execute_pass_list (pass=0x160ae40) at /mnt/svn/gcc-trunk/gcc/passes.c:1618 #10 0x00000000007f1eb7 in execute_pass_list (pass=0x160aea0) at /mnt/svn/gcc-trunk/gcc/passes.c:1618 #11 0x00000000009341a6 in tree_rest_of_compilation (fndecl=0x7ffff5d4a000) at /mnt/svn/gcc-trunk/gcc/tree-optimize.c:422 #12 0x0000000000afa9a2 in cgraph_expand_function (node=0x7ffff5d4d000) at /mnt/svn/gcc-trunk/gcc/cgraphunit.c:1522 #13 0x0000000000afd06a in cgraph_expand_all_functions () at /mnt/svn/gcc-trunk/gcc/cgraphunit.c:1581 #14 cgraph_optimize () at /mnt/svn/gcc-trunk/gcc/cgraphunit.c:1841 #15 0x0000000000afd5ea in cgraph_finalize_compilation_unit () at /mnt/svn/gcc-trunk/gcc/cgraphunit.c:1042 #16 0x000000000050585c in c_write_global_declarations () at /mnt/svn/gcc-trunk/gcc/c-decl.c:9843 #17 0x00000000008dd544 in compile_file (argc=17, argv=0x7fffffffda18) at /mnt/svn/gcc-trunk/gcc/toplev.c:591 #18 do_compile (argc=17, argv=0x7fffffffda18) at /mnt/svn/gcc-trunk/gcc/toplev.c:1874 #19 toplev_main (argc=17, argv=0x7fffffffda18) at /mnt/svn/gcc-trunk/gcc/toplev.c:1937 #20 0x00007ffff65f1bbd in __libc_start_main () from /lib/libc.so.6 #21 0x00000000004ec455 in _start ()
