e0ac46e69d
This reverts commit d618f1c3b12effd0c2bdb7d02108d3551f389d3d. This commit wasn't reviewed ahead of time and significant concerns were raised immediately after it landed. According to our developer policy this warrants immediate revert of the commit. https://llvm.org/docs/DeveloperPolicy.html#patch-reversion-policy Differential Revision: https://reviews.llvm.org/D155509
53 lines
712 B
C
53 lines
712 B
C
/* RUN: %clang_cc1 -E %s -DNO_ERRORS -Werror -Wundef
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RUN: not %clang_cc1 -E %s
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*/
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#ifdef NO_ERRORS
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/* None of these divisions by zero are in live parts of the expression, do not
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emit any diagnostics. */
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#define MACRO_0 0
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#define MACRO_1 1
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#if MACRO_0 && 10 / MACRO_0
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foo
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#endif
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#if MACRO_1 || 10 / MACRO_0
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bar
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#endif
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#if 0 ? 124/0 : 42
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#endif
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// PR2279
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#if 0 ? 1/0: 2
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#else
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#error
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#endif
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// PR2279
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#if 1 ? 2 ? 3 : 4 : 5
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#endif
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// PR2284
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#if 1 ? 0: 1 ? 1/0: 1/0
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#endif
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#else
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/* The 1/0 is live, it should error out. */
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#if 0 && 1 ? 4 : 1 / 0
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baz
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#endif
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#endif
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// rdar://6505352
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// -Wundef should not warn about use of undefined identifier if not live.
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#if (!defined(XXX) || XXX > 42)
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#endif
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