[Bug target/52260] New: [4.7 Regression] ICE in clone_tree_hash, at dwarf2out.c:7424

[doko at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52260

             Bug #: 52260
           Summary: [4.7 Regression] ICE in clone_tree_hash, at
                    dwarf2out.c:7424
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: d...@gcc.gnu.org


Created attachment 26663
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26663
preprocessed source

seen with 20120214 r184236 in stage1 building the debug libstdc++, last
successful build was 20120210 on arm-linux-gnueabi, configured with:

         --enable-libstdcxx-debug
         --enable-libstdcxx-time=yes
         --with-arch=armv7-a
         --with-float=hard
         --with-fpu=vfpv3-d16
         --with-mode=thumb

omitting -gdwarf-4 avoids the ICE.

$ build/gcc/xgcc -Bbuild/gcc/ -c -fno-implicit-templates -std=gnu++11 -gdwarf-4
funcexecpt.ii 
../../../../../../src/libstdc++-v3/src/c++11/functexcept.cc:194:1: internal
compiler error: in clone_tree_hash, at dwarf2out.c:7424
Please submit a full bug report,
with preprocessed source if appropriate.

Breakpoint 1, fancy_abort (file=0x9d63d0 "../../src/gcc/dwarf2out.c",
line=7424,
    function=0x9d9c58 "clone_tree_hash") at ../../src/gcc/diagnostic.c:899
899       internal_error ("in %s, at %s:%d", function, trim_filename (file),
line);
(gdb) bt
#0  fancy_abort (file=0x9d63d0 "../../src/gcc/dwarf2out.c", line=7424, 
    function=0x9d9c58 "clone_tree_hash") at ../../src/gcc/diagnostic.c:899
#1  0x00269f4a in clone_tree_hash (die=0xb1736540, decl_table=0xeabab0)
    at ../../src/gcc/dwarf2out.c:7424
#2  0x0026a04c in copy_decls_walk (unit=0xb1770750, die=0xb161c2a0,
decl_table=0xeabab0)
    at ../../src/gcc/dwarf2out.c:7474
#3  0x0026a142 in copy_decls_walk (unit=0xb1770750, die=0xb3fc42d0,
decl_table=0xeabab0)
    at ../../src/gcc/dwarf2out.c:7522
#4  0x0026a142 in copy_decls_walk (unit=0xb1770750, die=0xb1770750,
decl_table=0xeabab0)
    at ../../src/gcc/dwarf2out.c:7522
#5  0x0026a18e in copy_decls_for_unworthy_types (unit=0xb1770750)
    at ../../src/gcc/dwarf2out.c:7538
#6  0x00284302 in dwarf2out_finish (
    filename=0xd30328
"../../../../../../src/libstdc++-v3/src/c++11/functexcept.cc")
    at ../../src/gcc/dwarf2out.c:22614
#7  0x0048f312 in compile_file () at ../../src/gcc/toplev.c:611
#8  0x0049169a in do_compile () at ../../src/gcc/toplev.c:1938
#9  0x00491822 in toplev_main (argc=20, argv=0xbefff644) at
../../src/gcc/toplev.c:2014
#10 0x001c5e7e in main (argc=20, argv=0xbefff644) at ../../src/gcc/main.c:36