teak-llvm/clang/test/Sema/attr-ownership.c
Michael Kruse dc5ce72afa Append new attributes to the end of an AttributeList.
Recommit of r335084 after revert in r335516.

... instead of prepending it at the beginning (the original behavior
since implemented in r122535 2010-12-23). This builds up an
AttributeList in the the order in which the attributes appear in the
source.

The reverse order caused nodes for attributes in the AST (e.g. LoopHint)
to be in the reverse order, and therefore printed in the wrong order in
-ast-dump. Some TODO comments mention this. The order was explicitly
reversed for enable_if attribute overload resolution and name mangling,
which is not necessary anymore with this patch.

The change unfortunately has some secondary effect, especially on
diagnostic output. In the simplest cases, the CHECK lines or expected
diagnostic were changed to the the new output. If the kind of
error/warning changed, the attributes' order was changed instead.

This unfortunately causes some 'previous occurrence here' hints to be
textually after the main marker. This typically happens when attributes
are merged, but are incompatible to each other. Interchanging the role
of the the main and note SourceLocation will also cause the case where
two different declaration's attributes (in contrast to multiple
attributes of the same declaration) are merged to be reverse. There is
no easy fix because sometimes previous attributes are merged into a new
declaration's attribute list, sometimes new attributes are added to a
previous declaration's attribute list. Since 'previous occurrence here'
pointing to locations after the main marker is not rare, I left the
markers as-is; it is only relevant when the attributes are declared in
the same declaration anyway.

Differential Revision: https://reviews.llvm.org/D48100

llvm-svn: 338800
2018-08-03 01:21:16 +00:00

27 lines
2.5 KiB
C

// RUN: %clang_cc1 %s -verify -fsyntax-only
void f1(void) __attribute__((ownership_takes("foo"))); // expected-error {{'ownership_takes' attribute requires parameter 1 to be an identifier}}
void *f2(void) __attribute__((ownership_returns(foo, 1, 2))); // expected-error {{'ownership_returns' attribute takes no more than 1 argument}}
void f3(void) __attribute__((ownership_holds(foo, 1))); // expected-error {{'ownership_holds' attribute parameter 1 is out of bounds}}
void *f4(void) __attribute__((ownership_returns(foo)));
void f5(void) __attribute__((ownership_holds(foo))); // expected-error {{'ownership_holds' attribute takes at least 2 arguments}}
void f6(void) __attribute__((ownership_holds(foo, 1, 2, 3))); // expected-error {{'ownership_holds' attribute parameter 1 is out of bounds}}
void f7(void) __attribute__((ownership_takes(foo))); // expected-error {{'ownership_takes' attribute takes at least 2 arguments}}
void f8(int *i, int *j, int k) __attribute__((ownership_holds(foo, 1, 2, 4))); // expected-error {{'ownership_holds' attribute parameter 3 is out of bounds}}
int f9 __attribute__((ownership_takes(foo, 1))); // expected-warning {{'ownership_takes' attribute only applies to non-K&R-style functions}}
void f10(int i) __attribute__((ownership_holds(foo, 1))); // expected-error {{'ownership_holds' attribute only applies to pointer arguments}}
void *f11(float i) __attribute__((ownership_returns(foo, 1))); // expected-error {{'ownership_returns' attribute only applies to integer arguments}}
void *f12(float i, int k, int f, int *j) __attribute__((ownership_returns(foo, 4))); // expected-error {{'ownership_returns' attribute only applies to integer arguments}}
void f13(int *i, int *j) __attribute__((ownership_holds(foo, 1))) __attribute__((ownership_takes(foo, 2)));
void f14(int i, int j, int *k) __attribute__((ownership_holds(foo, 3))) __attribute__((ownership_takes(foo, 3))); // expected-error {{'ownership_takes' and 'ownership_holds' attributes are not compatible}}
void f15(int, int)
__attribute__((ownership_returns(foo, 1))) // expected-error {{'ownership_returns' attribute index does not match; here it is 1}}
__attribute__((ownership_returns(foo, 2))); // expected-note {{declared with index 2 here}}
void f16(int *i, int *j) __attribute__((ownership_holds(foo, 1))) __attribute__((ownership_holds(foo, 1))); // OK, same index
void f17(void*) __attribute__((ownership_takes(__, 1)));
void f18() __attribute__((ownership_takes(foo, 1))); // expected-warning {{'ownership_takes' attribute only applies to non-K&R-style functions}}