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* [Bug server/15081] New: AX with gcc-4.8: Expression pieces exceed word size
@ 2013-01-29 17:47 jan.kratochvil at redhat dot com
2013-01-30 16:00 ` [Bug server/15081] " tromey at redhat dot com
0 siblings, 1 reply; 2+ messages in thread
From: jan.kratochvil at redhat dot com @ 2013-01-29 17:47 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=15081
Bug #: 15081
Summary: AX with gcc-4.8: Expression pieces exceed word size
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: server
AssignedTo: unassigned@sourceware.org
ReportedBy: jan.kratochvil@redhat.com
Classification: Unclassified
Host: x86_64-unknown-linux-gnu
Target: x86_64-unknown-linux-gnu
Then there is in gdbserver mode:
-PASS: gdb.trace/collection.exp: collect register locals collectively: start
trace experiment
+FAIL: gdb.trace/collection.exp: collect register locals collectively: start
trace experiment
due to:
register int locar[4];
locar[0] = 121;
locar[1] = 122;
locar[2] = 123;
locar[3] = 124;
producing with gcc-4.8.0pre:
DW_AT_location:
(DW_OP_reg12(r12);DW_OP_piece:8;DW_OP_reg13(r13);DW_OP_piece:8)
which cannot be handled by current AX:
if (bits_collected + size > 8 * sizeof (LONGEST))
error (_("Expression pieces exceed word size"));
as it is 128-bit variable (from two 64-bit registers).
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* [Bug server/15081] AX with gcc-4.8: Expression pieces exceed word size
2013-01-29 17:47 [Bug server/15081] New: AX with gcc-4.8: Expression pieces exceed word size jan.kratochvil at redhat dot com
@ 2013-01-30 16:00 ` tromey at redhat dot com
0 siblings, 0 replies; 2+ messages in thread
From: tromey at redhat dot com @ 2013-01-30 16:00 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=15081
Tom Tromey <tromey at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tromey at redhat dot com
--- Comment #1 from Tom Tromey <tromey at redhat dot com> 2013-01-30 16:00:25 UTC ---
This looks like a specific sub-case of bug #11662.
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2013-01-29 17:47 [Bug server/15081] New: AX with gcc-4.8: Expression pieces exceed word size jan.kratochvil at redhat dot com
2013-01-30 16:00 ` [Bug server/15081] " tromey at redhat dot com
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