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llvm-project/clang/test/Sema/attr-external-source-symbol.c

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[clang] Enable C++11-style attributes in all language modes This also ignores and deprecates the `-fdouble-square-bracket-attributes` command line flag, which seems to not be used anywhere. At least a code search exclusively found mentions of it in documentation: https://sourcegraph.com/search?q=context:global+-fdouble-square-bracket-attributes+-file:clang/*+-file:test/Sema/*+-file:test/Parser/*+-file:test/AST/*+-file:test/Preprocessor/*+-file:test/Misc/*+archived:yes&patternType=standard&sm=0&groupBy=repo RFC: https://discourse.llvm.org/t/rfc-enable-c-11-c2x-attributes-in-all-standard-modes-as-an-extension-and-remove-fdouble-square-bracket-attributes This enables `[[]]` attributes in all C and C++ language modes without warning by default. `-Wc++-extensions` does warn. GCC has enabled this extension in all C modes since GCC 10. Reviewed By: aaron.ballman, MaskRay Spies: #clang-vendors, beanz, JDevlieghere, Michael137, MaskRay, sstefan1, jplehr, cfe-commits, lldb-commits, dmgreen, jdoerfert, wenlei, wlei Differential Revision: https://reviews.llvm.org/D151683
2023-07-22 09:33:55 -07:00
// RUN: %clang_cc1 -fsyntax-only -fblocks -verify %s
Introduce an 'external_source_symbol' attribute that describes the origin and the nature of a declaration This commit adds an external_source_symbol attribute to Clang. This attribute specifies that a declaration originates from an external source and describes the nature of that source. This attribute will be used to improve IDE features like 'jump-to-definition' for mixed-language projects or project that use auto-generated code. rdar://30423368 Differential Revision: https://reviews.llvm.org/D29819 llvm-svn: 296649
2017-03-01 18:06:25 +00:00
Use functions with prototypes when appropriate; NFC A significant number of our tests in C accidentally use functions without prototypes. This patch converts the function signatures to have a prototype for the situations where the test is not specific to K&R C declarations. e.g., void func(); becomes void func(void); This is the first batch of tests being updated (there are a significant number of other tests left to be updated).
2022-02-03 16:39:21 -05:00
void threeClauses(void) __attribute__((external_source_symbol(language="Swift", defined_in="module", generated_declaration)));
Introduce an 'external_source_symbol' attribute that describes the origin and the nature of a declaration This commit adds an external_source_symbol attribute to Clang. This attribute specifies that a declaration originates from an external source and describes the nature of that source. This attribute will be used to improve IDE features like 'jump-to-definition' for mixed-language projects or project that use auto-generated code. rdar://30423368 Differential Revision: https://reviews.llvm.org/D29819 llvm-svn: 296649
2017-03-01 18:06:25 +00:00
Use functions with prototypes when appropriate; NFC A significant number of our tests in C accidentally use functions without prototypes. This patch converts the function signatures to have a prototype for the situations where the test is not specific to K&R C declarations. e.g., void func(); becomes void func(void); This is the first batch of tests being updated (there are a significant number of other tests left to be updated).
2022-02-03 16:39:21 -05:00
void twoClauses(void) __attribute__((external_source_symbol(language="Swift", defined_in="module")));
Introduce an 'external_source_symbol' attribute that describes the origin and the nature of a declaration This commit adds an external_source_symbol attribute to Clang. This attribute specifies that a declaration originates from an external source and describes the nature of that source. This attribute will be used to improve IDE features like 'jump-to-definition' for mixed-language projects or project that use auto-generated code. rdar://30423368 Differential Revision: https://reviews.llvm.org/D29819 llvm-svn: 296649
2017-03-01 18:06:25 +00:00
[clang] extend external_source_symbol attribute with USR clause Allow the user to specify a concrete USR in the external_source_symbol attribute. That will let Clang's indexer to use Swift USRs for Swift declarations that are represented with C++ declarations. This new clause is used by Swift when generating a C++ header representation of a Swift module: https://github.com/apple/swift/pull/63002 Differential Revision: https://reviews.llvm.org/D141324
2023-02-23 14:14:14 -08:00
void fourClauses(void) __attribute__((external_source_symbol(language="Swift", defined_in="module", generated_declaration, USR="test")));
void fiveClauses(void) __attribute__((external_source_symbol(language="Swift", defined_in="module", generated_declaration, generated_declaration, USR="test"))); // expected-error {{duplicate 'generated_declaration' clause in an 'external_source_symbol' attribute}}
Introduce an 'external_source_symbol' attribute that describes the origin and the nature of a declaration This commit adds an external_source_symbol attribute to Clang. This attribute specifies that a declaration originates from an external source and describes the nature of that source. This attribute will be used to improve IDE features like 'jump-to-definition' for mixed-language projects or project that use auto-generated code. rdar://30423368 Differential Revision: https://reviews.llvm.org/D29819 llvm-svn: 296649
2017-03-01 18:06:25 +00:00
Use functions with prototypes when appropriate; NFC A significant number of our tests in C accidentally use functions without prototypes. This patch converts the function signatures to have a prototype for the situations where the test is not specific to K&R C declarations. e.g., void func(); becomes void func(void); This is the first batch of tests being updated (there are a significant number of other tests left to be updated).
2022-02-03 16:39:21 -05:00
void oneClause(void) __attribute__((external_source_symbol(generated_declaration)));
Introduce an 'external_source_symbol' attribute that describes the origin and the nature of a declaration This commit adds an external_source_symbol attribute to Clang. This attribute specifies that a declaration originates from an external source and describes the nature of that source. This attribute will be used to improve IDE features like 'jump-to-definition' for mixed-language projects or project that use auto-generated code. rdar://30423368 Differential Revision: https://reviews.llvm.org/D29819 llvm-svn: 296649
2017-03-01 18:06:25 +00:00
Use functions with prototypes when appropriate; NFC A significant number of our tests in C accidentally use functions without prototypes. This patch converts the function signatures to have a prototype for the situations where the test is not specific to K&R C declarations. e.g., void func(); becomes void func(void); This is the first batch of tests being updated (there are a significant number of other tests left to be updated).
2022-02-03 16:39:21 -05:00
void noArguments(void)
Introduce an 'external_source_symbol' attribute that describes the origin and the nature of a declaration This commit adds an external_source_symbol attribute to Clang. This attribute specifies that a declaration originates from an external source and describes the nature of that source. This attribute will be used to improve IDE features like 'jump-to-definition' for mixed-language projects or project that use auto-generated code. rdar://30423368 Differential Revision: https://reviews.llvm.org/D29819 llvm-svn: 296649
2017-03-01 18:06:25 +00:00
__attribute__((external_source_symbol)); // expected-error {{'external_source_symbol' attribute takes at least 1 argument}}
Use functions with prototypes when appropriate; NFC A significant number of our tests in C accidentally use functions without prototypes. This patch converts the function signatures to have a prototype for the situations where the test is not specific to K&R C declarations. e.g., void func(); becomes void func(void); This is the first batch of tests being updated (there are a significant number of other tests left to be updated).
2022-02-03 16:39:21 -05:00
void namedDeclsOnly(void) {
Introduce an 'external_source_symbol' attribute that describes the origin and the nature of a declaration This commit adds an external_source_symbol attribute to Clang. This attribute specifies that a declaration originates from an external source and describes the nature of that source. This attribute will be used to improve IDE features like 'jump-to-definition' for mixed-language projects or project that use auto-generated code. rdar://30423368 Differential Revision: https://reviews.llvm.org/D29819 llvm-svn: 296649
2017-03-01 18:06:25 +00:00
int (^block)(void) = ^ (void)
__attribute__((external_source_symbol(language="Swift"))) { // expected-warning {{'external_source_symbol' attribute only applies to named declarations}}
return 1;
};
}
Add a C2x spelling for the external_source_symbol and internal_linkage attributes in the clang vendor namespace. Both of these attributes have existing meaning in C code, so there was no reason to exclude them from using the new spelling. llvm-svn: 326053
2018-02-25 14:43:45 +00:00
Use functions with prototypes when appropriate; NFC A significant number of our tests in C accidentally use functions without prototypes. This patch converts the function signatures to have a prototype for the situations where the test is not specific to K&R C declarations. e.g., void func(); becomes void func(void); This is the first batch of tests being updated (there are a significant number of other tests left to be updated).
2022-02-03 16:39:21 -05:00
[[clang::external_source_symbol(language="Swift", defined_in="module", generated_declaration)]] void threeClauses2(void);
Add a C2x spelling for the external_source_symbol and internal_linkage attributes in the clang vendor namespace. Both of these attributes have existing meaning in C code, so there was no reason to exclude them from using the new spelling. llvm-svn: 326053
2018-02-25 14:43:45 +00:00
Use functions with prototypes when appropriate; NFC A significant number of our tests in C accidentally use functions without prototypes. This patch converts the function signatures to have a prototype for the situations where the test is not specific to K&R C declarations. e.g., void func(); becomes void func(void); This is the first batch of tests being updated (there are a significant number of other tests left to be updated).
2022-02-03 16:39:21 -05:00
[[clang::external_source_symbol(language="Swift", defined_in="module")]] void twoClauses2(void);
Add a C2x spelling for the external_source_symbol and internal_linkage attributes in the clang vendor namespace. Both of these attributes have existing meaning in C code, so there was no reason to exclude them from using the new spelling. llvm-svn: 326053
2018-02-25 14:43:45 +00:00
[clang] extend external_source_symbol attribute with USR clause Allow the user to specify a concrete USR in the external_source_symbol attribute. That will let Clang's indexer to use Swift USRs for Swift declarations that are represented with C++ declarations. This new clause is used by Swift when generating a C++ header representation of a Swift module: https://github.com/apple/swift/pull/63002 Differential Revision: https://reviews.llvm.org/D141324
2023-02-23 14:14:14 -08:00
[[clang::external_source_symbol(language="Swift", defined_in="module", USR="test", generated_declaration, generated_declaration)]] // expected-error {{duplicate 'generated_declaration' clause in an 'external_source_symbol' attribute}}
void fiveClauses2(void);
Add a C2x spelling for the external_source_symbol and internal_linkage attributes in the clang vendor namespace. Both of these attributes have existing meaning in C code, so there was no reason to exclude them from using the new spelling. llvm-svn: 326053
2018-02-25 14:43:45 +00:00
Use functions with prototypes when appropriate; NFC A significant number of our tests in C accidentally use functions without prototypes. This patch converts the function signatures to have a prototype for the situations where the test is not specific to K&R C declarations. e.g., void func(); becomes void func(void); This is the first batch of tests being updated (there are a significant number of other tests left to be updated).
2022-02-03 16:39:21 -05:00
[[clang::external_source_symbol(generated_declaration)]] void oneClause2(void);
Add a C2x spelling for the external_source_symbol and internal_linkage attributes in the clang vendor namespace. Both of these attributes have existing meaning in C code, so there was no reason to exclude them from using the new spelling. llvm-svn: 326053
2018-02-25 14:43:45 +00:00
Fix an accepts-invalid issue with [[]] attributes in the type position in C A user reported an issue to me via email that Clang was accepting some code that GCC was rejecting. After investigation, it turned out to be a general problem of us failing to properly reject attributes written in the type position in C when they don't apply to types. The root cause was a terminology issue -- we sometimes use "CXX11Attr" to mean [[]] in C++11 mode and sometimes [[]] in general -- and this came back to bite us because in this particular case, it really meant [[]] in C++ mode. I fixed the issue by introducing a new function AttributeCommonInfo::isStandardAttributeSyntax() to represent [[]] in either C or C++ mode. This fix pointed out that we've had the issue in some of our existing tests, which have all been corrected. This resolves https://bugs.llvm.org/show_bug.cgi?id=50954.
2021-07-01 12:39:17 -04:00
[[clang::external_source_symbol]] // expected-error {{'external_source_symbol' attribute takes at least 1 argument}}
Use functions with prototypes when appropriate; NFC A significant number of our tests in C accidentally use functions without prototypes. This patch converts the function signatures to have a prototype for the situations where the test is not specific to K&R C declarations. e.g., void func(); becomes void func(void); This is the first batch of tests being updated (there are a significant number of other tests left to be updated).
2022-02-03 16:39:21 -05:00
void noArguments2(void);
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