Обсуждение: pgsql: Add definition pg_attribute_aligned() for MSVC

Add definition pg_attribute_aligned() for MSVC

Visual Studio 2015+ has support for a macro to control the alignement of
structures as of __declspec(align(#)), and this commit adds a definition
of pg_attribute_aligned() based on that.  It happens that this was
already used in the implementation of atomics for MSVC.  Note that there
is still no definition fo pg_attribute_packed(), so this does not impact
itemptr.h.

Author: James Coleman
Discussion: https://postgr.es/m/CAAaqYe-HbtZvR3msoMtk+hYW2S0e0OapzMW8icSMYTMA+mN8Aw@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/ec3c9cc202fb2749fce82483e6dc247cfe286cab

Modified Files
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config/c-compiler.m4                    |  2 ++
configure                               |  2 ++
src/include/c.h                         | 11 +++++++++++
src/include/port/atomics/generic-msvc.h |  2 +-
4 files changed, 16 insertions(+), 1 deletion(-)