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commit cdaac320fd62bff75562aaa3e466494dc72dd175
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Author: Andreas Arnez <arnez@linux.vnet.ibm.com>
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Date: Tue Jun 13 15:20:27 2017 +0200
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write_pieced_value: Fix copy/paste error in size calculation
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In write_pieced_value, the number of bytes containing a portion of the
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bit-field in a given piece is calculated with the wrong starting offset;
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thus the result may be off by one. This bug was probably introduced when
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copying this logic from read_pieced_value. Fix it.
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gdb/ChangeLog:
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* dwarf2loc.c (write_pieced_value): Fix copy/paste error in the
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calculation of this_size.
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### a/gdb/ChangeLog
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### b/gdb/ChangeLog
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## -1,5 +1,10 @@
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2017-06-13 Andreas Arnez <arnez@linux.vnet.ibm.com>
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+ * dwarf2loc.c (write_pieced_value): Fix copy/paste error in the
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+ calculation of this_size.
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+
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+2017-06-13 Andreas Arnez <arnez@linux.vnet.ibm.com>
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+
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* dwarf2loc.c (read_pieced_value): Respect parent value's offset
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when targeting a bit-field.
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(write_pieced_value): Likewise.
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--- a/gdb/dwarf2loc.c
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+++ b/gdb/dwarf2loc.c
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@@ -1983,7 +1983,7 @@ write_pieced_value (struct value *to, struct value *from)
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if (this_size_bits > type_len - offset)
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this_size_bits = type_len - offset;
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- this_size = (this_size_bits + source_offset_bits % 8 + 7) / 8;
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+ this_size = (this_size_bits + dest_offset_bits % 8 + 7) / 8;
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source_offset = source_offset_bits / 8;
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dest_offset = dest_offset_bits / 8;
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if (dest_offset_bits % 8 == 0 && source_offset_bits % 8 == 0)
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