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make tsizeof run on C++ backend (#9734)

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Arne Döring
2018-11-18 14:36:20 +01:00
committed by Andreas Rumpf
parent 696dc1609f
commit 5dfcc4e91c
2 changed files with 53 additions and 41 deletions
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28
compiler/sizealignoffsetimpl.nim
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@@ -318,16 +318,24 @@ proc computeSizeAlign(conf: ConfigRef; typ: PType) =
var headerAlign: int16
if typ.sons[0] != nil:
# compute header size
var st = typ.sons[0]
while st.kind in skipPtrs:
st = st.sons[^1]
computeSizeAlign(conf, st)
if st.size == szIllegalRecursion:
typ.size = st.size
typ.align = st.align
return
headerSize = st.size
headerAlign = st.align
if conf.cmd == cmdCompileToCpp:
# if the target is C++ the members of this type are written
# into the padding byets at the end of the parent type. At the
# moment it is not supported to calculate that.
headerSize = szUnknownSize
headerAlign = szUncomputedSize
else:
var st = typ.sons[0]
while st.kind in skipPtrs:
st = st.sons[^1]
computeSizeAlign(conf, st)
if st.size == szIllegalRecursion:
typ.size = st.size
typ.align = st.align
return
headerSize = st.size
headerAlign = st.align
elif isObjectWithTypeFieldPredicate(typ):
# this branch is taken for RootObj
headerSize = conf.target.intSize