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FFI: sizeof: Account for trailing padding of structs.

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* libguile/foreign.c (scm_sizeof): Make sure the overall size is a
  multiple of the alignment of the structure.
* test-suite/tests/foreign.test: Test size of { double, int8 }.
This commit is contained in:
Ken Raeburn 2012-05-21 00:30:45 -04:00 • committed by Ludovic Courtès
parent 0854b87493
commit 67d8ccc0e4
2 changed files with 7 additions and 2 deletions
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4
test-suite/tests/foreign.test
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@ -342,6 +342,10 @@
(= (sizeof (list int8 double))
(+ (alignof double) (sizeof double))))
(pass-if "sizeof { double, int8 }"
(= (sizeof (list double int8))
(+ (alignof double) (sizeof double))))
(pass-if "sizeof { short, int, long, pointer }"
(let ((layout (list short int long '*)))
(>= (sizeof layout)