[Bug bootstrap/39025] New: ICE in start_function, at c-decl.c:6225 while configuring libgcc

[Bug bootstrap/39025] New: ICE in start_function, at c-decl.c:6225 while configuring libgcc

[ro at gcc dot gnu dot org]

The configure step of libgcc aborts with

checking for suffix of object files... configure: error: in
`/vol/gccsrc/obj/gcc-lto-20090127/11-gcc/sparc-sun-solaris2.11/libgcc':
configure: error: cannot compute suffix of object files: cannot compile
See `config.log' for more details.

config.log reveals

configure:2590: checking for suffix of object files
configure:2611: /vol/gccsrc/obj/gcc-lto-20090127/11-gcc/./gcc/xgcc
-B/vol/gccsrc/obj/gcc-lto-20090127/11-gcc/./gcc/
-B/vol/gcc/sparc-sun-solaris2.11/bin/ -B/vol/gcc/sparc-sun-solaris2.11/lib/
-isystem /vol/gcc/sparc-sun-solaris2.11/include -isystem
/vol/gcc/sparc-sun-solaris2.11/sys-include -c -g -O2    conftest.c >&5
conftest.c:16: internal compiler error: Segmentation Fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
configure:2614: $? = 1
configure: failed program was:
| /* confdefs.h.  */
| 
| #define PACKAGE_NAME "GNU C Runtime Library"
| #define PACKAGE_TARNAME "libgcc"
| #define PACKAGE_VERSION "1.0"
| #define PACKAGE_STRING "GNU C Runtime Library 1.0"
| #define PACKAGE_BUGREPORT ""
| /* end confdefs.h.  */
| 
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:2627: error: in
`/vol/gccsrc/obj/gcc-lto-20090127/11-gcc/sparc-sun-solaris2.11/libgcc':
configure:2629: error: cannot compute suffix of object files: cannot compile
See `config.log' for more details.

Running cc1 on this conftest.c gives

% ./cc1 conftest.c
main 
conftest.c:5: internal compiler error: in start_function, at c-decl.c:6225
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

The same problem happens on i386-pc-solaris2.10.


-- 
           Summary: ICE in start_function, at c-decl.c:6225 while
                    configuring libgcc
           Product: gcc
           Version: lto
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: dnovillo at gcc dot gnu dot org
        ReportedBy: ro at gcc dot gnu dot org
 GCC build triplet: sparc-sun-solaris2.11
  GCC host triplet: sparc-sun-solaris2.11
GCC target triplet: sparc-sun-solaris2.11


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39025

[Bug bootstrap/39025] ICE in start_function, at c-decl.c:6225 while configuring libgcc

[ro at gcc dot gnu dot org]

------- Comment #1 from ro at gcc dot gnu dot org  2009-02-02 23:43 -------
It turns out that there are two problems here:

* If you invoke cc1 conftest.c (i.e. without -quiet), you get the ICE from the
  assertion failure in c-decl.c:6225:

  /* This is the earliest point at which we might know the assembler
     name of the function.  Thus, if it's set before this, die horribly.  */
  gcc_assert (!DECL_ASSEMBLER_NAME_SET_P (decl1));

  decl1 has an assembler_name of "main" at this point, which is due to this
  change in toplev.c (announce_function):

@@ -419,10 +432,7 @@ announce_function (tree decl)
 {
   if (!quiet_flag)
     {
-      if (rtl_dump_and_exit)
-       fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl)));
-      else
-       fprintf (stderr, " %s", lang_hooks.decl_printable_name (decl, 2));
+      fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME
(decl)));
       fflush (stderr);
       pp_needs_newline (global_dc->printer) = true;
       diagnostic_set_last_function (global_dc, (diagnostic_info *) NULL);

  Unlike lang_hooks.decl_printable_name, decl_assembler_name sets
assembler_name
  if unset, thus breaking the later assert.  Since announce_functions gards
  this with !quiet_flag, it only breaks without that flag.

* If instead on runs cc1 -g -quiet conftest.c (-g is necessary to trigger the
  bug which breaks configure, -quiet works around the first problem), on gets
  this instead.

> ./cc1 -g -quiet conftest.c
conftest.c:9: internal compiler error: Segmentation Fault

   Running cc1 under gdb reveals

Program received signal SIGSEGV, Segmentation fault.
0x083fdd54 in get_personality_function (decl=0x0) at
/vol/gcc/src/gcc-lto/gcc/expr.h:806
(gdb) where
#0  0x083fdd54 in get_personality_function (decl=0x0) at
/vol/gcc/src/gcc-lto/gcc/expr.h:806
#1  0x08404f08 in output_call_frame_info (for_eh=0) at
/vol/gcc/src/gcc-lto/gcc/dwarf2out.c:2914
#2  0x08405fce in dwarf2out_frame_finish () at
/vol/gcc/src/gcc-lto/gcc/dwarf2out.c:3351
#3  0x0899930a in compile_file () at /vol/gcc/src/gcc-lto/gcc/toplev.c:1023
#4  0x0899acc4 in do_compile () at /vol/gcc/src/gcc-lto/gcc/toplev.c:2220
#5  0x0899ad2b in toplev_main (argc=4, argv=0x80476cc) at
/vol/gcc/src/gcc-lto/gcc/toplev.c:2252
#6  0x0821c2f9 in main (argc=4, argv=0x80476cc) at
/vol/gcc/src/gcc-lto/gcc/main.c:35

  I.e. get_personality_function is called with current_function_decl = NULL.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39025

[Bug bootstrap/39025] ICE in start_function, at c-decl.c:6225 while configuring libgcc

[bje at gcc dot gnu dot org]

------- Comment #2 from bje at gcc dot gnu dot org  2009-07-09 05:10 -------
Rainer, can you please re-check this against the tip of the lto branch and
report back?  Thanks.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39025

[Bug bootstrap/39025] ICE in start_function, at c-decl.c:6225 while configuring libgcc

[ro at gcc dot gnu dot org]

------- Comment #3 from ro at gcc dot gnu dot org  2009-07-09 18:50 -------
I just checked rev 149403, and while I had a couple of new problems building
the
lto branch (to be reported shortly), this particular problem is gone and (apart
from libobjc) the default languages build.  A testsuite run is in progress.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39025

[Bug bootstrap/39025] ICE in start_function, at c-decl.c:6225 while configuring libgcc

[bje at gcc dot gnu dot org]

------- Comment #4 from bje at gcc dot gnu dot org  2009-07-13 05:50 -------
Fixed in (at least) r149403.


-- 

bje at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39025