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[gdb/symtab] Handle invalid partial DIE reference
When reverting commit 9cfd2b89bd "[gdb/testsuite] Fix gdb.arch/amd64-entry-value-paramref.S", we run into an internal-error: ... (gdb) file amd64-entry-value-paramref^M Reading symbols from amd64-entry-value-paramref...^M src/gdb/dwarf2/read.c:18903: internal-error: could not find partial DIE 0x1b7 in cache [from module amd64-entry-value-paramref]^M A problem internal to GDB has been detected,^M further debugging may prove unreliable.^M ... because of invalid dwarf. In contrast, when using -readnow, we have: ... (gdb) file -readnow amd64-entry-value-paramref Reading symbols from amd64-entry-value-paramref... Expanding full symbols from amd64-entry-value-paramref... Dwarf Error: Cannot find DIE at 0x1b7 referenced from DIE at 0x11a \ [in module amd64-entry-value-paramref] (gdb) ... Change the internal error into a Dwarf Error, such that we have: ... (gdb) file amd64-entry-value-paramref^M Reading symbols from amd64-entry-value-paramref...^M Dwarf Error: Cannot not find DIE at 0x1b7 \ [from module amd64-entry-value-paramref]^M ^M (No debugging symbols found in amd64-entry-value-paramref)^M (gdb) ... Build and tested on x86_64-linux. gdb/ChangeLog: 2020-08-04 Tom de Vries <tdevries@suse.de> PR symtab/23270 * dwarf2/read.c (find_partial_die): Change internal error into Dwarf Error.
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2020-08-04 Tom de Vries <tdevries@suse.de>
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PR symtab/23270
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* dwarf2/read.c (find_partial_die): Change internal error into Dwarf
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Error.
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2020-08-03 John Baldwin <jhb@FreeBSD.org>
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* syscalls/freebsd.xml: Regenerate.
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@ -18900,9 +18900,7 @@ find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu)
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}
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if (pd == NULL)
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internal_error (__FILE__, __LINE__,
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_("could not find partial DIE %s "
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"in cache [from module %s]\n"),
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error (_("Dwarf Error: Cannot not find DIE at %s [from module %s]\n"),
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sect_offset_str (sect_off), bfd_get_filename (objfile->obfd));
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return { cu, pd };
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}
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