[PATCH] D108592: [WIP][clang][Fuchsia] Support __attribute__((availability)) on Fuchsia
Leonard Chan via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Mon Aug 23 15:41:29 PDT 2021
leonardchan created this revision.
leonardchan added reviewers: phosek, mcgrathr.
leonardchan added a project: clang.
Herald added a reviewer: aaron.ballman.
leonardchan requested review of this revision.
This also adds a warning that triggers when a non-zero minor/subminor are used.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D108592
Files:
clang/include/clang/Basic/Attr.td
clang/include/clang/Basic/DiagnosticSemaKinds.td
clang/lib/Basic/Targets/OSTargets.h
clang/lib/Sema/SemaDeclAttr.cpp
clang/test/Sema/attr-availability-fuchsia.c
Index: clang/test/Sema/attr-availability-fuchsia.c
===================================================================
--- /dev/null
+++ clang/test/Sema/attr-availability-fuchsia.c
@@ -0,0 +1,19 @@
+// RUN: %clang_cc1 "-triple" "x86_64-unknown-fuchsia16" -fsyntax-only -verify %s
+
+void f0(int) __attribute__((availability(fuchsia, introduced = 14, deprecated = 19)));
+void f1(int) __attribute__((availability(fuchsia, introduced = 16)));
+void f2(int) __attribute__((availability(fuchsia, introduced = 14, deprecated = 16))); // expected-note {{'f2' has been explicitly marked deprecated here}}
+void f3(int) __attribute__((availability(fuchsia, introduced = 19)));
+void f4(int) __attribute__((availability(fuchsia, introduced = 9, deprecated = 11, obsoleted = 16), availability(ios, introduced = 2.0, deprecated = 3.0))); // expected-note{{explicitly marked unavailable}}
+void f5(int) __attribute__((availability(ios, introduced = 3.2), availability(fuchsia, unavailable))); // expected-note{{'f5' has been explicitly marked unavailable here}}
+void f6(int) __attribute__((availability(fuchsia, introduced = 16.0)));
+void f7(int) __attribute__((availability(fuchsia, introduced = 16.1))); // expected-warning {{Fuchsia versions only support 'major', not '.minor[.subminor]}}
+
+void test() {
+ f0(0);
+ f1(0);
+ f2(0); // expected-warning{{'f2' is deprecated: first deprecated in Fuchsia 16}}
+ f3(0);
+ f4(0); // expected-error{{f4' is unavailable: obsoleted in Fuchsia 16}}
+ f5(0); // expected-error{{'f5' is unavailable: not available on Fuchsia}}
+}
Index: clang/lib/Sema/SemaDeclAttr.cpp
===================================================================
--- clang/lib/Sema/SemaDeclAttr.cpp
+++ clang/lib/Sema/SemaDeclAttr.cpp
@@ -2488,6 +2488,15 @@
}
}
+ if (II->isStr("fuchsia")) {
+ Optional<unsigned> Min, Sub;
+ if (((Min = Introduced.Version.getMinor()) && Min.getValue()) ||
+ ((Sub = Introduced.Version.getSubminor()) && Sub.getValue())) {
+ S.Diag(AL.getLoc(), diag::warn_availability_fuchsia_unavailable_minor);
+ return;
+ }
+ }
+
int PriorityModifier = AL.isPragmaClangAttribute()
? Sema::AP_PragmaClangAttribute
: Sema::AP_Explicit;
Index: clang/lib/Basic/Targets/OSTargets.h
===================================================================
--- clang/lib/Basic/Targets/OSTargets.h
+++ clang/lib/Basic/Targets/OSTargets.h
@@ -885,6 +885,11 @@
// Required by the libc++ locale support.
if (Opts.CPlusPlus)
Builder.defineMacro("_GNU_SOURCE");
+
+ unsigned Maj, Min, Rev;
+ Triple.getOSVersion(Maj, Min, Rev);
+ this->PlatformName = "fuchsia";
+ this->PlatformMinVersion = VersionTuple(Maj, Min, Rev);
}
public:
Index: clang/include/clang/Basic/DiagnosticSemaKinds.td
===================================================================
--- clang/include/clang/Basic/DiagnosticSemaKinds.td
+++ clang/include/clang/Basic/DiagnosticSemaKinds.td
@@ -3543,6 +3543,9 @@
InGroup<Availability>;
def note_protocol_method : Note<
"protocol method is here">;
+def warn_availability_fuchsia_unavailable_minor : Warning<
+ "Fuchsia versions only support 'major', not '.minor[.subminor]'">,
+ InGroup<Availability>;
def warn_unguarded_availability :
Warning<"%0 is only available on %1 %2 or newer">,
Index: clang/include/clang/Basic/Attr.td
===================================================================
--- clang/include/clang/Basic/Attr.td
+++ clang/include/clang/Basic/Attr.td
@@ -848,6 +848,7 @@
[{static llvm::StringRef getPrettyPlatformName(llvm::StringRef Platform) {
return llvm::StringSwitch<llvm::StringRef>(Platform)
.Case("android", "Android")
+ .Case("fuchsia", "Fuchsia")
.Case("ios", "iOS")
.Case("macos", "macOS")
.Case("tvos", "tvOS")
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