?? expr.c
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/* Copyright (C) 2000, 2001 Free Software Foundation, Inc. *//* { dg-do preprocess } *//* Test we get signedness of ?: operator correct. We would skip evaluation of one argument, and might therefore not transfer its unsignedness to the result. *//* Neil Booth, 19 Jul 2002. */#if (1 ? -2: 0 + 1U) < 0#error /* { dg-bogus "error" } */#endif#if (0 ? 0 + 1U: -2) < 0#error /* { dg-bogus "error" } */#endif?? 快捷鍵說明
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