http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48389
Summary: [4.5/4.6/4.7 Regression] ICE: in make_edges, at cfgbuild.c:319 with -mtune=pentiumpro Product: gcc Version: 4.7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: rtl-optimization AssignedTo: unassig...@gcc.gnu.org ReportedBy: zso...@seznam.cz Host: x86_64-pc-linux-gnu Target: i686-pc-linux-gnu Created attachment 23838 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23838 reduced testcase Compiler output: $ gcc -O -m32 -mtune=pentiumpro testcase.c -Wno-abi testcase.c: In function 'foo': testcase.c:9:1: internal compiler error: in make_edges, at cfgbuild.c:319 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. (gdb) bt #0 fancy_abort (file=0x1348888 "/mnt/svn/gcc-trunk/gcc/cfgbuild.c", line=319, function=0x1348a01 "make_edges") at /mnt/svn/gcc-trunk/gcc/diagnostic.c:892 #1 0x0000000000f57610 in make_edges (blocks=Unhandled dwarf expression opcode 0xf3 ) at /mnt/svn/gcc-trunk/gcc/cfgbuild.c:319 #2 find_many_sub_basic_blocks (blocks=Unhandled dwarf expression opcode 0xf3 ) at /mnt/svn/gcc-trunk/gcc/cfgbuild.c:595 #3 0x00000000005e3f78 in gimple_expand_cfg () at /mnt/svn/gcc-trunk/gcc/cfgexpand.c:4199 #4 0x00000000007f0486 in execute_one_pass (pass=0x1648ac0) at /mnt/svn/gcc-trunk/gcc/passes.c:1555 #5 0x00000000007f0775 in execute_pass_list (pass=0x1648ac0) at /mnt/svn/gcc-trunk/gcc/passes.c:1610 #6 0x00000000009353d5 in tree_rest_of_compilation (fndecl=0x7ffff5978100) at /mnt/svn/gcc-trunk/gcc/tree-optimize.c:422 #7 0x0000000000b010c7 in cgraph_expand_function (node=0x7ffff5992000) at /mnt/svn/gcc-trunk/gcc/cgraphunit.c:1575 #8 0x0000000000b0381c in cgraph_expand_all_functions () at /mnt/svn/gcc-trunk/gcc/cgraphunit.c:1634 #9 cgraph_optimize () at /mnt/svn/gcc-trunk/gcc/cgraphunit.c:1898 #10 0x0000000000b03d9a in cgraph_finalize_compilation_unit () at /mnt/svn/gcc-trunk/gcc/cgraphunit.c:1095 #11 0x0000000000508de4 in c_write_global_declarations () at /mnt/svn/gcc-trunk/gcc/c-decl.c:9879 #12 0x00000000008de0fd in compile_file (argc=17, argv=0x7fffffffdc88) at /mnt/svn/gcc-trunk/gcc/toplev.c:591 #13 do_compile (argc=17, argv=0x7fffffffdc88) at /mnt/svn/gcc-trunk/gcc/toplev.c:1900 #14 toplev_main (argc=17, argv=0x7fffffffdc88) at /mnt/svn/gcc-trunk/gcc/toplev.c:1963 #15 0x00007ffff6487b6d in __libc_start_main () from /lib/libc.so.6 #16 0x00000000004ef7f9 in _start () Tested revisions: r171775 - crash 4.6 r171597 - crash 4.5 r171597 - crash 4.4 r171597 - OK