This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: [tree-ssa] Bootstrap failure on i686-linux


On Wed, 2003-09-03 at 09:40, Diego Novillo wrote:
> On Tue, 2003-09-02 at 14:26, Richard Henderson wrote:
> > On Mon, Sep 01, 2003 at 09:20:40PM -0700, Andrew Pinski wrote:
> > > The specific part that is causing the problems both on the mainline and 
> > > the tree-ssa
> > 
> > No, it isn't.  The immediate problem on tree-ssa is me failing to 
> > resolve conflicts properly when patching the branch.
> > 
> I think there still are missing bits.  I can now bootstrap/compare but
> we fail configuring libstdc++.  A similar fix seems to be missing in
> cp/decl.c.  I'm not familiar with this code, but the fix mirrors what
> you changed in c-decl.c, it seems mostly obvious to me.  If you think
> it's OK, I'll apply it.
> 
> This is not enough, however.  I get further in libstdc++, but we SEGV
> compiling allocator-inst.cc.  I'm still looking.
> 
This is another case of calling free_after_parsing() too soon.  This
time, it's being called from rest_of_compilation (because
DECL_DEFER_OUTPUT wasn't set).

We then go on to call emit_associated_thunks() from
cp/semantics.c:expand_body, which ultimately results in calling
emit_line_note which tries to dereference cfun->emit which is NULL.

#0  0x08280e90 in emit_line_note (location=
      {file = 0x8a91300 "/home/dnovillo/tree-ssa/native/bld.tobiano/i686-pc-linux-gnu/libstdc++-v3/include/bits/allocator.h", line = 136})
    at /home/dnovillo/tree-ssa/src/gcc/emit-rtl.c:4682
#1  0x08315f62 in init_function_start (subr=0x557744d0)
    at /home/dnovillo/tree-ssa/src/gcc/function.c:6362
#2  0x0808e371 in start_function (declspecs=0x0, declarator=0x557744d0, 
    attrs=0x0, flags=1) at /home/dnovillo/tree-ssa/src/gcc/cp/decl.c:13515
#3  0x08150fbf in maybe_clone_body (fn=0x5576cd20)
    at /home/dnovillo/tree-ssa/src/gcc/cp/optimize.c:215
#4  0x08145094 in expand_or_defer_fn (fn=0x5576cd20)
    at /home/dnovillo/tree-ssa/src/gcc/cp/semantics.c:3042
#5  0x080c2db1 in instantiate_decl (d=0x5576cd20, defer_ok=0)
    at /home/dnovillo/tree-ssa/src/gcc/cp/pt.c:10937
#6  0x080c3400 in instantiate_pending_templates ()
    at /home/dnovillo/tree-ssa/src/gcc/cp/pt.c:11013
#7  0x080eb4cc in finish_file ()
    at /home/dnovillo/tree-ssa/src/gcc/cp/decl2.c:2684
#8  0x081943b0 in c_common_parse_file (set_yydebug=0)
    at /home/dnovillo/tree-ssa/src/gcc/c-opts.c:1207


Diego.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]