llvm-project/clang/test/Sema/crash-invalid-builtin.c

// RUN: %clang_cc1 -triple=x86_64-apple-darwin -fsyntax-only -verify %s
// PR23086

__builtin_isinf(...); // expected-warning {{type specifier missing, defaults to 'int'}} expected-error {{ISO C requires a named parameter before '...'}} // expected-error {{cannot redeclare builtin function '__builtin_isinf'}} // expected-note {{'__builtin_isinf' is a builtin with type 'int ()'}}
[Sema] Check if a builtin is FunctionPrototype(). Don't assume it's always is. This prevents a crash in Sema while trying to merge return type for a builtin w/out function prototype. PR: 23086 Differential Revision: http://reviews.llvm.org/D9235 Reviewed by: rsmith llvm-svn: 235806 2015-04-26 04:20:04 +08:00			`// RUN: %clang_cc1 -triple=x86_64-apple-darwin -fsyntax-only -verify %s`
			`// PR23086`

Reland [NFC-I] Remove hack for fp-classification builtins The FP-classification builtins (__builtin_isfinite, etc) use variadic packs in the definition file to mean an overload set. Because of that, floats were converted to doubles, which is incorrect. There WAS a patch to remove the cast after the fact. THis patch switches these builtins to just be custom type checking, calls the implicit conversions for the integer members, and makes sure the correct L->R casts are put into place, then does type checking like normal. A future direction (that wouldn't be NFC) would consider making conversions for the floating point parameter legal. Note: The initial patch for this missed that certain systems need to still convert half to float, since they dont' support that type. 2019-12-17 03:15:48 +08:00			`__builtin_isinf(...); // expected-warning {{type specifier missing, defaults to 'int'}} expected-error {{ISO C requires a named parameter before '...'}} // expected-error {{cannot redeclare builtin function '__builtin_isinf'}} // expected-note {{'__builtin_isinf' is a builtin with type 'int ()'}}`