15 lines
670 B
C
15 lines
670 B
C
$NetBSD: patch-jsapi.h,v 1.1 2015/09/08 18:53:46 joerg Exp $
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Multiplication is safe, even if the input is negative. Left shift is not.
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--- jsapi.h.orig 2015-09-03 12:07:45.000000000 +0000
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+++ jsapi.h
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@@ -103,7 +103,7 @@ JS_BEGIN_EXTERN_C
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#define JSVAL_INT_MAX (JSVAL_INT_POW2(30) - 1)
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#define INT_FITS_IN_JSVAL(i) ((jsuint)((i)+JSVAL_INT_MAX) <= 2*JSVAL_INT_MAX)
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#define JSVAL_TO_INT(v) ((jsint)(v) >> 1)
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-#define INT_TO_JSVAL(i) (((jsval)(i) << 1) | JSVAL_INT)
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+#define INT_TO_JSVAL(i) (((jsval)(i) * 2) | JSVAL_INT)
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/* Convert between boolean and jsval. */
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#define JSVAL_TO_BOOLEAN(v) ((JSBool)((v) >> JSVAL_TAGBITS))
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