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Currently Sema::CheckForIntOverflow misses several case that other compilers diagnose for overflow in integral constant expressions. This includes the arguments of a CXXConstructExpr as well as the expressions used in an ArraySubscriptExpr, CXXNewExpr and CompoundLiteralExpr. This fixes https://github.com/llvm/llvm-project/issues/58944 Differential Revision: https://reviews.llvm.org/D137897
19 lines
638 B
C++
19 lines
638 B
C++
// RUN: %clang_cc1 %s -Wno-unused-value -verify -fsyntax-only
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namespace GH58944 {
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struct A {
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A(unsigned long) ;
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};
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A a(1024 * 1024 * 1024 * 1024 * 1024ull); // expected-warning {{overflow in expression; result is 0 with type 'int'}}
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void f() {
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new int[1024 * 1024 * 1024 * 1024 * 1024ull]; // expected-warning {{overflow in expression; result is 0 with type 'int'}}
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int arr[]{1,2,3};
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arr[1024 * 1024 * 1024 * 1024 * 1024ull]; // expected-warning {{overflow in expression; result is 0 with type 'int'}}
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(int){1024 * 1024 * 1024 * 1024 * 1024}; // expected-warning {{overflow in expression; result is 0 with type 'int'}}
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}
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}
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