Bug 19932 – ICE: compiler crashes when reading ifloat/idouble as uint/ulong during CTFE

Example: ---- auto getBits(U, T)(const T value) if (T.sizeof == U.sizeof && T.alignof >= U.alignof && __traits(isUnsigned, U)) { return *cast(U*) &value; } void main() { const floatBits = getBits!(uint, float)(1.0f); // fine const doubleBits = getBits!(ulong, double)(1.0); // fine const ifloatBits = getBits!(uint, ifloat)(1.0i); // fine const idoubleBits = getBits!(ulong, idouble)(1.0i); // fine enum ctfeFloatBits = getBits!(uint, float)(1.0f); // fine enum ctfeDoubleBits = getBits!(ulong, double)(1.0); // fine //enum ctfeIFloatBits = getBits!(uint, ifloat)(1.0i); // crashes compiler //enum ctfeIDoubleBits = getBits!(ulong, idouble)(1.0i); // crashes compiler } ----

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