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ebcbe4b6aa
Original commit message: Provide -Wnull-conversion separately from -Wconversion. Like GCC, provide a NULL conversion to non-pointer conversion as a separate flag, on by default. GCC's flag is "conversion-null" which we provide for cross compatibility, but in the interests of consistency (with -Wint-conversion, -Wbool-conversion, etc) the canonical Clang flag is called -Wnull-conversion. Patch by Lubos Lunak. Review feedback by myself, Chandler Carruth, and Chad Rosier. llvm-svn: 152774
22 lines
669 B
C++
22 lines
669 B
C++
// RUN: %clang_cc1 -triple x86_64-unknown-unknown %s -Wno-null-conversion -fsyntax-only -verify
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// RUN: %clang_cc1 -triple i686-unknown-unknown %s -Wno-null-conversion -fsyntax-only -verify
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void f() {
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int* i = __null;
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i = __null;
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int i2 = __null;
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// Verify statically that __null is the right size
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int a[sizeof(typeof(__null)) == sizeof(void*)? 1 : -1];
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// Verify that null is evaluated as 0.
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int b[__null ? -1 : 1];
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}
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struct A {};
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void g() {
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(void)(0 ? __null : A()); // expected-error {{non-pointer operand type 'A' incompatible with NULL}}
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(void)(0 ? A(): __null); // expected-error {{non-pointer operand type 'A' incompatible with NULL}}
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}
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