[Bug symtab/15691] gdb crash from "Stay in DWO optimization"

["cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=15691

--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
CVSROOT:    /cvs/src
Module name:    src
Changes by:    devans@sourceware.org    2013-08-02 00:33:07

Modified files:
    gdb            : ChangeLog dwarf2read.c 
    gdb/testsuite  : ChangeLog 
Added files:
    gdb/testsuite/gdb.dwarf2: fission-mix.c fission-mix.exp 
                              fission-mix.h fission-mix2.c 

Log message:
    PR symtab/15691
    * dwarf2read.c (struct dwarf2_per_cu_data): New member tu_read.
    (fill_in_sig_entry_from_dwo_entry): Reorganize asserts.
    Add assert of sig_entry->dwo_unit == NULL.
    (lookup_dwo_signatured_type): Don't assign TU to a DWO if the TU
    had already been read.
    (read_signatured_type): Set per_cu.tu_read.

    testsuite/
    * gdb.dwarf2/fission-mix.exp: New file.
    * gdb.dwarf2/fission-mix.h: New file.
    * gdb.dwarf2/fission-mix.c: New file.
    * gdb.dwarf2/fission-mix2.c: New file.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.15858&r2=1.15859
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/dwarf2read.c.diff?cvsroot=src&r1=1.820&r2=1.821
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/ChangeLog.diff?cvsroot=src&r1=1.3756&r2=1.3757
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.dwarf2/fission-mix.c.diff?cvsroot=src&r1=NONE&r2=1.1
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.dwarf2/fission-mix.exp.diff?cvsroot=src&r1=NONE&r2=1.1
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.dwarf2/fission-mix.h.diff?cvsroot=src&r1=NONE&r2=1.1
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.dwarf2/fission-mix2.c.diff?cvsroot=src&r1=NONE&r2=1.1

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