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On 06/15/2016 04:40 PM, John David Anglin wrote:
On 2016-06-15 8:16 AM, Andreas Schwab wrote:Florian Weimer<fweimer@redhat.com> writes:>On 06/15/2016 01:42 PM, John David Anglin wrote:>>The attached patch fixes BZ 20243. The HEADER struct needs to be packed so that >>byte accesses are used. Tested using glibc 2.22-11on hppa. Please install if okay.>>>-} HEADER; >>+} __attribute__ ((packed)) HEADER;
I don't think the packed derivative affects the layout of HEADER given the way the fields are arranged.
I verified that it changes alignment, even on x86_64. That's the intent, and it results in a layout change (if this struct is used as a part of other structs, for example).
Florian
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