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Fix #13093 C++ Atomics: operator= is implicitly deleted because the default definition would be ill-formed (#21169)

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* add test

* fix #17982 Invalid C++ code generation when returning discardable var T

* fix #13093

* cpp atomic good example

* clearify the condition
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Bung 2023-01-27 00:50:44 -08:00 • committed by GitHub
commit a7bae919ad
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5 changed files with 54 additions and 2 deletions
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4
compiler/cgen.nim
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@ -491,6 +491,10 @@ proc constructLoc(p: BProc, loc: var TLoc, isTemp = false) =
nilLoc.r = rope("NIM_NIL")
genRefAssign(p, loc, nilLoc)
else:
if typ.kind == tyVar:
let tt = typ.skipTypes({tyVar})
if isImportedType(tt) and tfRequiresInit in tt.flags:
return
linefmt(p, cpsStmts, "$1 = ($2)0;$n", [rdLoc(loc),
getTypeDesc(p.module, typ, mapTypeChooser(loc))])
else: