http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45955
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hubicka at gcc dot gnu.org
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-10-09
16:21:39 UTC ---
(In reply to comment #0)
> Executing on host: /test/gnu/gcc/objdir/gcc/xgcc -B/test/gnu/gcc/objdir/gcc/
> /te
> st/gnu/gcc/gcc/gcc/testsuite/gcc.dg/initpri1.c -ansi -pedantic-errors -lm
>
> -o ./initpri1.exe (timeout = 300)
> WARNING: program timed out.
> compiler exited with status 1
> FAIL: gcc.dg/initpri1.c (test for excess errors)
>
> Running under gdb, I see:
>
> Program received signal SIGINT, Interrupt.
> 0x01478e68 in build_cdtor (ctor_p=1 '\001', cdtors=0x400c9108)
> at ../../gcc/gcc/ipa.c:1490
> 1490 while (i < len);
> (gdb) bt
> #0 0x01478e68 in build_cdtor (ctor_p=1 '\001', cdtors=0x400c9108)
> at ../../gcc/gcc/ipa.c:1490
> #1 0x01479384 in build_cdtor_fns () at ../../gcc/gcc/ipa.c:1565
> #2 0x0147962c in ipa_cdtor_merge () at ../../gcc/gcc/ipa.c:1594
> #3 0x00ca6da0 in execute_one_pass (pass=0x4001ca4c)
> at ../../gcc/gcc/passes.c:1562
> #4 0x00ca8058 in execute_ipa_pass_list (pass=0x4001ca4c)
> at ../../gcc/gcc/passes.c:1929
> #5 0x013ee044 in ipa_passes () at ../../gcc/gcc/cgraphunit.c:1734
> #6 0x013ee1a8 in cgraph_optimize () at ../../gcc/gcc/cgraphunit.c:1769
> #7 0x013eb62c in cgraph_finalize_compilation_unit ()
> at ../../gcc/gcc/cgraphunit.c:1020
> #8 0x000c262c in c_write_global_declarations ()
> at ../../gcc/gcc/c-decl.c:9821
> #9 0x00e2c434 in compile_file () at ../../gcc/gcc/toplev.c:946
> #10 0x00e30508 in do_compile () at ../../gcc/gcc/toplev.c:2374
> #11 0x00e30694 in toplev_main (argc=19, argv=0x7eff05e4)
> at ../../gcc/gcc/toplev.c:2415
> #12 0x00373f34 in main (argc=19, argv=0x7eff05e4) at ../../gcc/gcc/main.c:36
>
> There's a thinko in this code:
>
> /* Find the next batch of constructors/destructors with the same
> initialization priority. */
> for (;i < j; i++)
> {
> tree call;
> fn = VEC_index (tree, cdtors, i);
> call = build_call_expr (fn, 0);
> if (ctor_p)
> DECL_STATIC_CONSTRUCTOR (fn) = 0;
> else
> DECL_STATIC_DESTRUCTOR (fn) = 0;
> /* We do not want to optimize away pure/const calls here.
> When optimizing, these should be already removed, when not
> optimizing, we want user to be able to breakpoint in them. */
> TREE_SIDE_EFFECTS (call) = 1;
> append_to_statement_list (call, &body);
> }
> while (i < len);
Looks like a funny cut&pasto. Just remove the last while (i < len) line
which actually is an endless loop.
