Implement __attribute__((internal_linkage)).
The attrubite is applicable to functions and variables and changes
the linkage of the subject to internal.
This is the same functionality as C-style "static", but applicable to
class methods; and the same as anonymouns namespaces, but can apply
to individual methods of a class.
Following the proposal in
http://lists.llvm.org/pipermail/cfe-dev/2015-October/045580.html
llvm-svn: 252648
diff --git a/clang/test/Sema/attr-coldhot.c b/clang/test/Sema/attr-coldhot.c
index abadf88..972f5a5 100644
--- a/clang/test/Sema/attr-coldhot.c
+++ b/clang/test/Sema/attr-coldhot.c
@@ -6,5 +6,7 @@
int var1 __attribute__((__cold__)); // expected-warning{{'__cold__' attribute only applies to functions}}
int var2 __attribute__((__hot__)); // expected-warning{{'__hot__' attribute only applies to functions}}
-int qux() __attribute__((__hot__)) __attribute__((__cold__)); // expected-error{{'__hot__' and 'cold' attributes are not compatible}}
-int baz() __attribute__((__cold__)) __attribute__((__hot__)); // expected-error{{'__cold__' and 'hot' attributes are not compatible}}
+int qux() __attribute__((__hot__)) __attribute__((__cold__)); // expected-error{{'__hot__' and 'cold' attributes are not compatible}} \
+// expected-note{{conflicting attribute is here}}
+int baz() __attribute__((__cold__)) __attribute__((__hot__)); // expected-error{{'__cold__' and 'hot' attributes are not compatible}} \
+// expected-note{{conflicting attribute is here}}
diff --git a/clang/test/Sema/attr-notail.c b/clang/test/Sema/attr-notail.c
index 7b8371f..4d05fcf 100644
--- a/clang/test/Sema/attr-notail.c
+++ b/clang/test/Sema/attr-notail.c
@@ -1,7 +1,9 @@
// RUN: %clang_cc1 -fsyntax-only -verify %s
-int callee0() __attribute__((not_tail_called,always_inline)); // expected-error{{'not_tail_called' and 'always_inline' attributes are not compatible}}
-int callee1() __attribute__((always_inline,not_tail_called)); // expected-error{{'always_inline' and 'not_tail_called' attributes are not compatible}}
+int callee0() __attribute__((not_tail_called,always_inline)); // expected-error{{'not_tail_called' and 'always_inline' attributes are not compatible}} \
+// expected-note{{conflicting attribute is here}}
+int callee1() __attribute__((always_inline,not_tail_called)); // expected-error{{'always_inline' and 'not_tail_called' attributes are not compatible}} \
+// expected-note{{conflicting attribute is here}}
int foo(int a) {
return a ? callee0() : callee1();
diff --git a/clang/test/Sema/internal_linkage.c b/clang/test/Sema/internal_linkage.c
new file mode 100644
index 0000000..f4deccc
--- /dev/null
+++ b/clang/test/Sema/internal_linkage.c
@@ -0,0 +1,21 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+int var __attribute__((internal_linkage));
+int var2 __attribute__((internal_linkage,common)); // expected-error{{'internal_linkage' and 'common' attributes are not compatible}} \
+ // expected-note{{conflicting attribute is here}}
+int var3 __attribute__((common,internal_linkage)); // expected-error{{'common' and 'internal_linkage' attributes are not compatible}} \
+ // expected-note{{conflicting attribute is here}}
+
+int var4 __attribute__((common)); // expected-error{{'common' and 'internal_linkage' attributes are not compatible}} \
+// expected-note{{previous definition is here}}
+int var4 __attribute__((internal_linkage)); // expected-note{{conflicting attribute is here}} \
+// expected-error{{'internal_linkage' attribute does not appear on the first declaration of 'var4'}}
+
+int var5 __attribute__((internal_linkage)); // expected-error{{'internal_linkage' and 'common' attributes are not compatible}}
+int var5 __attribute__((common)); // expected-note{{conflicting attribute is here}}
+
+__attribute__((internal_linkage)) int f() {}
+struct __attribute__((internal_linkage)) S { // expected-warning{{'internal_linkage' attribute only applies to variables and functions}}
+};
+
+__attribute__((internal_linkage("foo"))) int g() {} // expected-error{{'internal_linkage' attribute takes no arguments}}