62 lines
2.1 KiB
Diff
62 lines
2.1 KiB
Diff
http://sourceware.org/ml/gdb-patches/2010-09/msg00183.html
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Subject: [patch] .gdb_index: Do not crash on NOBITS
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Hi,
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elfutils-0.148 still do not contain patch of its GIT
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804e9ca4d644e64a6125307cbf0a0b89477d7611 where the .gdb_index section has been
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also split into the separate debug info file.
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Due to it binaries split using elfutils-0.148 contain
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[38] .gdb_index NOBITS 0000000000000000 0000338c
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instead of expected
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[28] .gdb_index PROGBITS 0000000000000000 0000211c
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and due to it GDB while reading the file can error() by:
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Reading symbols from x.debug...Dwarf Error: Can't read DWARF data from 'x.debug'
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which should not be fatal but due to some other bugs therein it can crash GDB.
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The wrong separate debug info file is for example:
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http://kojipkgs.fedoraproject.org/packages/glibc/2.12.90/10/x86_64/glibc-debuginfo-2.12.90-10.x86_64.rpm
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/usr/lib/debug/lib64/libutil-2.12.90.so.debug
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OK to check-in?
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It does not attempt to use .gdb_index from the main binary, it will just
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disable .gdb_index usage on these binaries.
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Thanks,
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Jan
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http://sourceware.org/ml/gdb-cvs/2010-09/msg00062.html
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### src/gdb/ChangeLog 2010/09/08 19:09:42 1.12162
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### src/gdb/ChangeLog 2010/09/08 19:49:28 1.12163
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## -1,3 +1,7 @@
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+2010-09-08 Jan Kratochvil <jan.kratochvil@redhat.com>
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+
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+ * dwarf2read.c (dwarf2_read_index): Return on no SEC_HAS_CONTENTS.
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+
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2010-09-08 Daniel Jacobowitz <dan@codesourcery.com>
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* dwarf2read.c (read_structure_type): Move processing of
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--- src/gdb/dwarf2read.c 2010/09/08 19:09:42 1.452
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+++ src/gdb/dwarf2read.c 2010/09/08 19:49:28 1.453
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@@ -1904,6 +1904,13 @@
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if (dwarf2_per_objfile->gdb_index.asection == NULL
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|| dwarf2_per_objfile->gdb_index.size == 0)
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return 0;
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+
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+ /* Older elfutils strip versions could keep the section in the main
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+ executable while splitting it for the separate debug info file. */
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+ if ((bfd_get_file_flags (dwarf2_per_objfile->gdb_index.asection)
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+ & SEC_HAS_CONTENTS) == 0)
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+ return 0;
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+
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dwarf2_read_section (objfile, &dwarf2_per_objfile->gdb_index);
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addr = dwarf2_per_objfile->gdb_index.buffer;
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