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annotate lphobos/std/stdarg.d @ 70:fb265a6efea1 trunk

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[svn r74] Fixed passing types with different alignment to D-style variadic functions. Fixed casting integer to pointer.
author lindquist
date Sun, 28 Oct 2007 19:33:50 +0100
parents d4a678905d5e
children 5825d48b27d1
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1
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2 /*
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3 * Placed in public domain.
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4 * Written by Hauke Duden and Walter Bright
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5 */
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6
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7 /* This is for use with variable argument lists with extern(D) linkage. */
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8
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9 module std.stdarg;
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10
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11 alias void* va_list;
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12
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13 T va_arg(T)(inout va_list vp)
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14 {
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fb265a6efea1 [svn r74] Fixed passing types with different alignment to D-style variadic functions.
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15 static assert((T.sizeof & (T.sizeof -1)) == 0);
fb265a6efea1 [svn r74] Fixed passing types with different alignment to D-style variadic functions.
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16 va_list vptmp = cast(va_list)((cast(size_t)vp + T.sizeof - 1) & ~(T.sizeof - 1));
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17 vp = vptmp + T.sizeof;
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18 return *cast(T*)vptmp;
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19 }