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f03cb005eb
Introduce `nonblocking` and `nonallocating` attributes. RFC is here: https://discourse.llvm.org/t/rfc-nolock-and-noalloc-attributes/76837 This PR introduces the attributes, with some changes in Sema to deal with them as extensions to function (proto)types. There are some basic type checks, most importantly, a warning when trying to spoof the attribute (implicitly convert a function without the attribute to one that has it). A second, follow-on pull request will introduce new caller/callee verification. --------- Co-authored-by: Doug Wyatt <dwyatt@apple.com> Co-authored-by: Shafik Yaghmour <shafik.yaghmour@intel.com> Co-authored-by: Aaron Ballman <aaron@aaronballman.com> Co-authored-by: Sirraide <aeternalmail@gmail.com>
15 lines
494 B
C
15 lines
494 B
C
// RUN: %clang_cc1 -fsyntax-only -verify -std=c89 %s
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// Tests for a few cases involving C functions without prototypes.
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void noproto() __attribute__((nonblocking)) // expected-error {{'nonblocking' function must have a prototype}}
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{
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}
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// This will succeed
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void noproto(void) __attribute__((blocking));
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// A redeclaration isn't any different - a prototype is required.
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void f1(void);
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void f1() __attribute__((nonblocking)); // expected-error {{'nonblocking' function must have a prototype}}
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