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making literals embedded in the source immutable

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Alex Shinn 2012-06-10 14:22:22 +09:00
parent 638558ebe0
commit 8d5ea4cdf4
1 changed files with 2 additions and 0 deletions
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2
eval.c
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@ -928,6 +928,8 @@ static sexp analyze (sexp ctx, sexp object) {
} else if (sexp_nullp(x)) {
res = sexp_compile_error(ctx, "empty application in source", x);
} else {
if (sexp_pointerp(x)) /* accept vectors and other literals directly, */
sexp_immutablep(x) = 1; /* but they must be immutable */
res = x;
}
if (sexp_exceptionp(res) && sexp_not(sexp_exception_source(res))