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Here, if cp_perform_integral_promotions saw that the TREE_TYPE of a bit-field reference was the same as the type it promotes to, it didn't do anything. But then decay_conversion saw that the bit-field reference was unchanged, and converted it to its declared type. So I needed to add something to make it clear that promotion has been done. But then the 33819 change caused trouble by looking through the NOP_EXPR I just added. This was the wrong fix for that bug; I've now fixed that better by recognizing in cp_perform_integral_promotions that we won't promote a bit-field larger than 32 bits, so we should use the declared type. PR c++/33819 - long bit-field promotion. * typeck.c (cp_perform_integral_promotions): Handle large bit-fields properly. Handle 32-bit non-int bit-fields properly. (is_bitfield_expr_with_lowered_type): Don't look through NOP_EXPR. From-SVN: r275746
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