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gc: disallow ... in type conversions
Fixes #1866. R=bradfitz, rsc CC=golang-dev https://golang.org/cl/4548073
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@ -794,7 +794,7 @@ reswitch:
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defaultlit(&n->left, T);
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l = n->left;
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if(l->op == OTYPE) {
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if(n->isddd)
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if(n->isddd || l->type->bound == -100)
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yyerror("invalid use of ... in type conversion", l);
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// pick off before type-checking arguments
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ok |= Erv;
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@ -43,4 +43,5 @@ func bad(args ...int) {
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var x int
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_ = unsafe.Pointer(&x...) // ERROR "[.][.][.]"
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_ = unsafe.Sizeof(x...) // ERROR "[.][.][.]"
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_ = [...]byte("foo") // ERROR "[.][.][.]"
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}
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