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CT sizeof(+friends) for {.importc, completeStruct.} types, enable ABI static checks (#13926)

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* -d:checkabi obsolete (ABI check now enforced); add `addTypeHeader` helper
* cleanups
* import sizeof at CT for {.completeType.}
* address comments; revert default enabling of -d:checkAbi for now
* mimportc_size_check.nim => msizeof5.nim; merge mabi_check.nim into msizeof5.nim; refactor
* all pragmas in errmsgs should be written: '.importc' (un-ambiguous and less verbose than {.importc.})
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Timothee Cour 2020-04-23 02:24:09 -07:00 • committed by GitHub
commit 66db9de714
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14 changed files with 221 additions and 39 deletions
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6
compiler/pragmas.nim
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@ -61,7 +61,7 @@ const
wGcSafe, wCodegenDecl} - {wExportNims, wError, wUsed} # why exclude these?
typePragmas* = declPragmas + {wMagic, wAcyclic,
wPure, wHeader, wCompilerProc, wCore, wFinal, wSize, wShallow,
wIncompleteStruct, wByCopy, wByRef,
wIncompleteStruct, wCompleteStruct, wByCopy, wByRef,
wInheritable, wGensym, wInject, wRequiresInit, wUnchecked, wUnion, wPacked,
wBorrow, wGcSafe, wPartial, wExplain, wPackage}
fieldPragmas* = declPragmas + {
@ -1072,6 +1072,10 @@ proc singlePragma(c: PContext, sym: PSym, n: PNode, i: var int,
noVal(c, it)
if sym.typ == nil: invalidPragma(c, it)
else: incl(sym.typ.flags, tfIncompleteStruct)
of wCompleteStruct:
noVal(c, it)
if sym.typ == nil: invalidPragma(c, it)
else: incl(sym.typ.flags, tfCompleteStruct)
of wUnchecked:
noVal(c, it)
if sym.typ == nil or sym.typ.kind notin {tyArray, tyUncheckedArray}: