nickdesaulniers updated this revision to Diff 167845.
nickdesaulniers marked an inline comment as done.
nickdesaulniers added a comment.
- move back untouched test case
Repository:
rC Clang
https://reviews.llvm.org/D52248
Files:
include/clang/Basic/DiagnosticSemaKinds.td
lib/Parse/ParseDecl.cpp
lib/Sema/DeclSpec.cpp
lib/Sema/SemaType.cpp
test/FixIt/fixit-eof-space.c
test/Parser/atomic.c
test/Sema/declspec.c
test/Sema/dupl-declspec.c
Index: test/Sema/dupl-declspec.c
===================================================================
--- /dev/null
+++ test/Sema/dupl-declspec.c
@@ -0,0 +1,242 @@
+/*
+RUN: not %clang_cc1 %s -std=c89 -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-C89 %s
+RUN: not %clang_cc1 %s -std=c89 -pedantic -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-C89-PEDANTIC %s
+RUN: not %clang_cc1 %s -std=c99 -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-C99 %s
+RUN: not %clang_cc1 %s -std=c99 -pedantic -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-C99-PEDANTIC %s
+RUN: not %clang_cc1 %s -std=c11 -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-C11 %s
+RUN: not %clang_cc1 %s -std=c11 -pedantic -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-C11-PEDANTIC %s
+RUN: not %clang_cc1 %s -std=c17 -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-C17 %s
+RUN: not %clang_cc1 %s -std=c17 -pedantic -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-C17-PEDANTIC %s
+
+RUN: not %clang_cc1 %s -std=gnu89 -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-GNU89 -allow-empty %s
+RUN: not %clang_cc1 %s -std=gnu89 -pedantic -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-GNU89-PEDANTIC %s
+RUN: %clang_cc1 %s -std=gnu99 -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-GNU99 -allow-empty %s
+RUN: %clang_cc1 %s -std=gnu99 -pedantic -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-GNU99-PEDANTIC %s
+RUN: %clang_cc1 %s -std=gnu11 -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-GNU11 -allow-empty %s
+RUN: %clang_cc1 %s -std=gnu11 -pedantic -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-GNU11-PEDANTIC %s
+RUN: %clang_cc1 %s -std=gnu17 -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-GNU17 -allow-empty %s
+RUN: %clang_cc1 %s -std=gnu17 -pedantic -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-GNU17-PEDANTIC %s
+*/
+
+const const int pr8264_1;
+/*
+CHECK-C89-NOT: 21:7: warning: duplicate 'const' declaration specifier
+CHECK-C89-PEDANTIC: 21:7: warning: duplicate 'const' declaration specifier
+ ^ NOTE: special case
+CHECK-C99-NOT: 21:7: warning: duplicate 'const' declaration specifier
+CHECK-C99-PEDANTIC-NOT: 21:7: warning: duplicate 'const' declaration specifier
+CHECK-C11-NOT: 21:7: warning: duplicate 'const' declaration specifier
+CHECK-C11-PEDANTIC-NOT: 21:7: warning: duplicate 'const' declaration specifier
+CHECK-C17-NOT: 21:7: warning: duplicate 'const' declaration specifier
+CHECK-C17-PEDANTIC-NOT: 21:7: warning: duplicate 'const' declaration specifier
+
+CHECK-GNU89-NOT: 21:7: warning: duplicate 'const' declaration specifier
+CHECK-GNU89-PEDANTIC: 21:7: warning: duplicate 'const' declaration specifier
+ ^ NOTE: special case
+CHECK-GNU99-NOT: 21:7: warning: duplicate 'const' declaration specifier
+CHECK-GNU99-PEDANTIC-NOT: 21:7: warning: duplicate 'const' declaration specifier
+CHECK-GNU11-NOT: 21:7: warning: duplicate 'const' declaration specifier
+CHECK-GNU11-PEDANTIC-NOT: 21:7: warning: duplicate 'const' declaration specifier
+CHECK-GNU17-NOT: 21:7: warning: duplicate 'const' declaration specifier
+CHECK-GNU17-PEDANTIC-NOT: 21:7: warning: duplicate 'const' declaration specifier
+*/
+
+typedef const int t;
+const t c_i;
+/*
+CHECK-C89-NOT: 45:1: warning: duplicate 'const' declaration specifier
+CHECK-C89-PEDANTIC: 45:1: warning: duplicate 'const' declaration specifier
+ ^ NOTE: special case
+CHECK-C99-NOT: 45:1: warning: duplicate 'const' declaration specifier
+CHECK-C99-PEDANTIC-NOT: 45:1: warning: duplicate 'const' declaration specifier
+CHECK-C11-NOT: 45:1: warning: duplicate 'const' declaration specifier
+CHECK-C11-PEDANTIC-NOT: 45:1: warning: duplicate 'const' declaration specifier
+CHECK-C17-NOT: 45:1: warning: duplicate 'const' declaration specifier
+CHECK-C17-PEDANTIC-NOT: 45:1: warning: duplicate 'const' declaration specifier
+
+CHECK-GNU89-NOT: 45:1: warning: duplicate 'const' declaration specifier
+CHECK-GNU89-PEDANTIC: 45:1: warning: duplicate 'const' declaration specifier
+ ^ NOTE: special case
+CHECK-GNU99-NOT: 45:1: warning: duplicate 'const' declaration specifier
+CHECK-GNU99-PEDANTIC-NOT: 45:1: warning: duplicate 'const' declaration specifier
+CHECK-GNU11-NOT: 45:1: warning: duplicate 'const' declaration specifier
+CHECK-GNU11-PEDANTIC-NOT: 45:1: warning: duplicate 'const' declaration specifier
+CHECK-GNU17-NOT: 45:1: warning: duplicate 'const' declaration specifier
+CHECK-GNU17-PEDANTIC-NOT: 45:1: warning: duplicate 'const' declaration specifier
+*/
+
+const int c_i2;
+const typeof(pr8264_1) c_i4;
+/*
+CHECK-C89-NOT: 69:1: warning: duplicate 'const' declaration specifier
+CHECK-C89-PEDANTIC-NOT: 69:1: warning: duplicate 'const' declaration specifier
+CHECK-C99-NOT: 69:1: warning: duplicate 'const' declaration specifier
+CHECK-C99-PEDANTIC-NOT: 69:1: warning: duplicate 'const' declaration specifier
+CHECK-C11-NOT: 69:1: warning: duplicate 'const' declaration specifier
+CHECK-C11-PEDANTIC-NOT: 69:1: warning: duplicate 'const' declaration specifier
+CHECK-C17-NOT: 69:1: warning: duplicate 'const' declaration specifier
+CHECK-C17-PEDANTIC-NOT: 69:1: warning: duplicate 'const' declaration specifier
+
+CHECK-GNU89-NOT: 69:1: warning: duplicate 'const' declaration specifier
+CHECK-GNU89-PEDANTIC: 69:1: warning: duplicate 'const' declaration specifier
+ ^ NOTE: special case
+CHECK-GNU99-NOT: 69:1: warning: duplicate 'const' declaration specifier
+CHECK-GNU99-PEDANTIC-NOT: 69:1: warning: duplicate 'const' declaration specifier
+CHECK-GNU11-NOT: 69:1: warning: duplicate 'const' declaration specifier
+CHECK-GNU11-PEDANTIC-NOT: 69:1: warning: duplicate 'const' declaration specifier
+CHECK-GNU17-NOT: 69:1: warning: duplicate 'const' declaration specifier
+CHECK-GNU17-PEDANTIC-NOT: 69:1: warning: duplicate 'const' declaration specifier
+*/
+
+volatile volatile int pr8264_2;
+/*
+CHECK-C89-NOT: 91:10: warning: duplicate 'volatile' declaration specifier
+CHECK-C89-PEDANTIC: 91:10: warning: duplicate 'volatile' declaration specifier
+ ^ NOTE: special case
+CHECK-C99-NOT: 91:10: warning: duplicate 'volatile' declaration specifier
+CHECK-C99-PEDANTIC-NOT: 91:10: warning: duplicate 'volatile' declaration specifier
+CHECK-C11-NOT: 91:10: warning: duplicate 'volatile' declaration specifier
+CHECK-C11-PEDANTIC-NOT: 91:10: warning: duplicate 'volatile' declaration specifier
+CHECK-C17-NOT: 91:10: warning: duplicate 'volatile' declaration specifier
+CHECK-C17-PEDANTIC-NOT: 91:10: warning: duplicate 'volatile' declaration specifier
+
+CHECK-GNU89-NOT: 91:10: warning: duplicate 'volatile' declaration specifier
+CHECK-GNU89-PEDANTIC: 91:10: warning: duplicate 'volatile' declaration specifier
+ ^ NOTE: special case
+CHECK-GNU99-NOT: 91:10: warning: duplicate 'volatile' declaration specifier
+CHECK-GNU99-PEDANTIC-NOT: 91:10: warning: duplicate 'volatile' declaration specifier
+CHECK-GNU11-NOT: 91:10: warning: duplicate 'volatile' declaration specifier
+CHECK-GNU11-PEDANTIC-NOT: 91:10: warning: duplicate 'volatile' declaration specifier
+CHECK-GNU17-NOT: 91:10: warning: duplicate 'volatile' declaration specifier
+CHECK-GNU17-PEDANTIC-NOT: 91:10: warning: duplicate 'volatile' declaration specifier
+*/
+
+extern extern int pr8264_3;
+/*
+CHECK-C89: 114:8: warning: duplicate 'extern' declaration specifier
+CHECK-C89-PEDANTIC: 114:8: warning: duplicate 'extern' declaration specifier
+CHECK-C99: 114:8: warning: duplicate 'extern' declaration specifier
+CHECK-C99-PEDANTIC: 114:8: warning: duplicate 'extern' declaration specifier
+CHECK-C11: 114:8: warning: duplicate 'extern' declaration specifier
+CHECK-C11-PEDANTIC: 114:8: warning: duplicate 'extern' declaration specifier
+CHECK-C17: 114:8: warning: duplicate 'extern' declaration specifier
+CHECK-C17-PEDANTIC: 114:8: warning: duplicate 'extern' declaration specifier
+
+CHECK-GNU89: 114:8: warning: duplicate 'extern' declaration specifier
+CHECK-GNU89-PEDANTIC: 114:8: warning: duplicate 'extern' declaration specifier
+CHECK-GNU99: 114:8: warning: duplicate 'extern' declaration specifier
+CHECK-GNU99-PEDANTIC: 114:8: warning: duplicate 'extern' declaration specifier
+CHECK-GNU11: 114:8: warning: duplicate 'extern' declaration specifier
+CHECK-GNU11-PEDANTIC: 114:8: warning: duplicate 'extern' declaration specifier
+CHECK-GNU17: 114:8: warning: duplicate 'extern' declaration specifier
+CHECK-GNU17-PEDANTIC: 114:8: warning: duplicate 'extern' declaration specifier
+*/
+
+void pr8264_4() {
+ register register int x;
+}
+/*
+CHECK-C89: 136:12: warning: duplicate 'register' declaration specifier
+CHECK-C89-PEDANTIC: 136:12: warning: duplicate 'register' declaration specifier
+CHECK-C99: 136:12: warning: duplicate 'register' declaration specifier
+CHECK-C99-PEDANTIC: 136:12: warning: duplicate 'register' declaration specifier
+CHECK-C11: 136:12: warning: duplicate 'register' declaration specifier
+CHECK-C11-PEDANTIC: 136:12: warning: duplicate 'register' declaration specifier
+CHECK-C17: 136:12: warning: duplicate 'register' declaration specifier
+CHECK-C17-PEDANTIC: 136:12: warning: duplicate 'register' declaration specifier
+
+CHECK-GNU89: 136:12: warning: duplicate 'register' declaration specifier
+CHECK-GNU89-PEDANTIC: 136:12: warning: duplicate 'register' declaration specifier
+CHECK-GNU99: 136:12: warning: duplicate 'register' declaration specifier
+CHECK-GNU99-PEDANTIC: 136:12: warning: duplicate 'register' declaration specifier
+CHECK-GNU11: 136:12: warning: duplicate 'register' declaration specifier
+CHECK-GNU11-PEDANTIC: 136:12: warning: duplicate 'register' declaration specifier
+CHECK-GNU17: 136:12: warning: duplicate 'register' declaration specifier
+CHECK-GNU17-PEDANTIC: 136:12: warning: duplicate 'register' declaration specifier
+*/
+
+inline inline void pr8264_5() {}
+/*
+CHECK-C89-NOT: 158:8: warning: duplicate 'inline' declaration specifier
+CHECK-C89-PEDANTIC-NOT: 158:8: warning: duplicate 'inline' declaration specifier
+CHECK-C99: 158:8: warning: duplicate 'inline' declaration specifier
+CHECK-C99-PEDANTIC: 158:8: warning: duplicate 'inline' declaration specifier
+CHECK-C11: 158:8: warning: duplicate 'inline' declaration specifier
+CHECK-C11-PEDANTIC: 158:8: warning: duplicate 'inline' declaration specifier
+CHECK-C17: 158:8: warning: duplicate 'inline' declaration specifier
+CHECK-C17-PEDANTIC: 158:8: warning: duplicate 'inline' declaration specifier
+
+CHECK-GNU89: 158:8: warning: duplicate 'inline' declaration specifier
+CHECK-GNU89-PEDANTIC: 158:8: warning: duplicate 'inline' declaration specifier
+CHECK-GNU99: 158:8: warning: duplicate 'inline' declaration specifier
+CHECK-GNU99-PEDANTIC: 158:8: warning: duplicate 'inline' declaration specifier
+CHECK-GNU11: 158:8: warning: duplicate 'inline' declaration specifier
+CHECK-GNU11-PEDANTIC: 158:8: warning: duplicate 'inline' declaration specifier
+CHECK-GNU17: 158:8: warning: duplicate 'inline' declaration specifier
+CHECK-GNU17-PEDANTIC: 158:8: warning: duplicate 'inline' declaration specifier
+*/
+
+_Noreturn _Noreturn void pr8264_6() {}
+/*
+CHECK-C89: 179:11: warning: duplicate '_Noreturn' declaration specifier
+CHECK-C89-PEDANTIC: 179:11: warning: duplicate '_Noreturn' declaration specifier
+CHECK-C99: 179:11: warning: duplicate '_Noreturn' declaration specifier
+CHECK-C99-PEDANTIC: 179:11: warning: duplicate '_Noreturn' declaration specifier
+CHECK-C11: 179:11: warning: duplicate '_Noreturn' declaration specifier
+CHECK-C11-PEDANTIC: 179:11: warning: duplicate '_Noreturn' declaration specifier
+CHECK-C17: 179:11: warning: duplicate '_Noreturn' declaration specifier
+CHECK-C17-PEDANTIC: 179:11: warning: duplicate '_Noreturn' declaration specifier
+
+CHECK-GNU89: 179:11: warning: duplicate '_Noreturn' declaration specifier
+CHECK-GNU89-PEDANTIC: 179:11: warning: duplicate '_Noreturn' declaration specifier
+CHECK-GNU99: 179:11: warning: duplicate '_Noreturn' declaration specifier
+CHECK-GNU99-PEDANTIC: 179:11: warning: duplicate '_Noreturn' declaration specifier
+CHECK-GNU11: 179:11: warning: duplicate '_Noreturn' declaration specifier
+CHECK-GNU11-PEDANTIC: 179:11: warning: duplicate '_Noreturn' declaration specifier
+CHECK-GNU17: 179:11: warning: duplicate '_Noreturn' declaration specifier
+CHECK-GNU17-PEDANTIC: 179:11: warning: duplicate '_Noreturn' declaration specifier
+*/
+
+typedef _Atomic _Atomic _Atomic(int) atomic_int;
+/*
+CHECK-C89-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier
+CHECK-C89-PEDANTIC: 200:17: warning: duplicate '_Atomic' declaration specifier
+ ^ NOTE: special case
+CHECK-C99-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier
+CHECK-C99-PEDANTIC-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier
+CHECK-C11-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier
+CHECK-C11-PEDANTIC-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier
+CHECK-C17-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier
+CHECK-C17-PEDANTIC-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier
+
+CHECK-GNU89-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier
+CHECK-GNU89-PEDANTIC: 200:17: warning: duplicate '_Atomic' declaration specifier
+ ^ NOTE: special case
+CHECK-GNU99-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier
+CHECK-GNU99-PEDANTIC-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier
+CHECK-GNU11-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier
+CHECK-GNU11-PEDANTIC-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier
+CHECK-GNU17-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier
+CHECK-GNU17-PEDANTIC-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier
+*/
+
+char * restrict restrict pr8264_7;
+/*
+CHECK-C89-NOT: 223:17: warning: duplicate 'restrict' declaration specifier
+CHECK-C89-PEDANTIC-NOT: 223:17: warning: duplicate 'restrict' declaration specifier
+CHECK-C99-NOT: 223:17: warning: duplicate 'restrict' declaration specifier
+CHECK-C99-PEDANTIC-NOT: 223:17: warning: duplicate 'restrict' declaration specifier
+CHECK-C11-NOT: 223:17: warning: duplicate 'restrict' declaration specifier
+CHECK-C11-PEDANTIC-NOT: 223:17: warning: duplicate 'restrict' declaration specifier
+CHECK-C17-NOT: 223:17: warning: duplicate 'restrict' declaration specifier
+CHECK-C17-PEDANTIC-NOT: 223:17: warning: duplicate 'restrict' declaration specifier
+
+CHECK-GNU89-NOT: 223:17: warning: duplicate 'restrict' declaration specifier
+CHECK-GNU89-PEDANTIC-NOT: 223:17: warning: duplicate 'restrict' declaration specifier
+CHECK-GNU99-NOT: 223:17: warning: duplicate 'restrict' declaration specifier
+CHECK-GNU99-PEDANTIC-NOT: 223:17: warning: duplicate 'restrict' declaration specifier
+CHECK-GNU11-NOT: 223:17: warning: duplicate 'restrict' declaration specifier
+CHECK-GNU11-PEDANTIC-NOT: 223:17: warning: duplicate 'restrict' declaration specifier
+CHECK-GNU17-NOT: 223:17: warning: duplicate 'restrict' declaration specifier
+CHECK-GNU17-PEDANTIC-NOT: 223:17: warning: duplicate 'restrict' declaration specifier
+*/
Index: test/Sema/declspec.c
===================================================================
--- test/Sema/declspec.c
+++ test/Sema/declspec.c
@@ -36,16 +36,3 @@
struct test3s {
} // expected-error {{expected ';' after struct}}
typedef int test3g;
-
-// PR8264
-const const int pr8264_1 = 0; // expected-warning {{duplicate 'const' declaration specifier}}
-volatile volatile int pr8264_2; // expected-warning {{duplicate 'volatile' declaration specifier}}
-char * restrict restrict pr8264_3; // expected-warning {{duplicate 'restrict' declaration specifier}}
-
-extern extern int pr8264_4; // expected-warning {{duplicate 'extern' declaration specifier}}
-void pr8264_5() {
- register register int x; // expected-warning {{duplicate 'register' declaration specifier}}
-}
-
-inline inline void pr8264_6() {} // expected-warning {{duplicate 'inline' declaration specifier}}
-_Noreturn _Noreturn void pr8264_7(); // expected-warning {{duplicate '_Noreturn' declaration specifier}}
Index: test/Parser/atomic.c
===================================================================
--- test/Parser/atomic.c
+++ test/Parser/atomic.c
@@ -2,7 +2,6 @@
typedef _Atomic(int) atomic_int;
typedef _Atomic int atomic_int;
-typedef _Atomic _Atomic _Atomic(int) atomic_int; // expected-warning {{duplicate '_Atomic' declaration specifier}}
typedef const int const_int;
Index: test/FixIt/fixit-eof-space.c
===================================================================
--- test/FixIt/fixit-eof-space.c
+++ test/FixIt/fixit-eof-space.c
@@ -1,9 +1,9 @@
-// RUN: not %clang_cc1 %s -fsyntax-only -fdiagnostics-parseable-fixits 2>&1 | FileCheck %s
+// RUN: not %clang_cc1 %s -fsyntax-only -fdiagnostics-parseable-fixits -std=c90 -pedantic 2>&1 | FileCheck %s
// vim: set binary noeol:
// This file intentionally ends without a \n on the last line. Make sure your
// editor doesn't add one. The trailing space is also intentional.
// CHECK: :9:8: warning: duplicate 'extern' declaration specifier
// CHECK: fix-it:"{{.*}}":{9:8-9:15}:""
extern extern
\ No newline at end of file
Index: lib/Sema/SemaType.cpp
===================================================================
--- lib/Sema/SemaType.cpp
+++ lib/Sema/SemaType.cpp
@@ -1679,8 +1679,12 @@
// C90 6.5.3 constraints: "The same type qualifier shall not appear more
// than once in the same specifier-list or qualifier-list, either directly
// or via one or more typedefs."
- if (!S.getLangOpts().C99 && !S.getLangOpts().CPlusPlus
- && TypeQuals & Result.getCVRQualifiers()) {
+ //
+ // C90 and GNU89 do not warn if the TST is from a typedef unless -pedantic
+ // was set. GNU89 additionally does not warn if the TST is from a typeof
+ // expression unless -pedantic was set.
+ if (!S.getLangOpts().C99 && !S.getLangOpts().CPlusPlus &&
+ TypeQuals & Result.getCVRQualifiers()) {
if (TypeQuals & DeclSpec::TQ_const && Result.isConstQualified()) {
S.Diag(DS.getConstSpecLoc(), diag::ext_duplicate_declspec)
<< "const";
Index: lib/Sema/DeclSpec.cpp
===================================================================
--- lib/Sema/DeclSpec.cpp
+++ lib/Sema/DeclSpec.cpp
@@ -438,8 +438,8 @@
if (TNew != TPrev)
DiagID = diag::err_invalid_decl_spec_combination;
else
- DiagID = IsExtension ? diag::ext_duplicate_declspec :
- diag::warn_duplicate_declspec;
+ DiagID = IsExtension ? diag::ext_duplicate_declspec
+ : diag::extwarn_duplicate_declspec;
return true;
}
@@ -608,7 +608,8 @@
!(SCS_extern_in_linkage_spec &&
StorageClassSpec == SCS_extern &&
SC == SCS_typedef))
- return BadSpecifier(SC, (SCS)StorageClassSpec, PrevSpec, DiagID);
+ return BadSpecifier(SC, (SCS)StorageClassSpec, PrevSpec, DiagID,
+ /*IsExtension=*/false);
}
StorageClassSpec = SC;
StorageClassSpecLoc = Loc;
@@ -850,14 +851,11 @@
bool DeclSpec::SetTypeQual(TQ T, SourceLocation Loc, const char *&PrevSpec,
unsigned &DiagID, const LangOptions &Lang) {
- // Duplicates are permitted in C99 onwards, but are not permitted in C89 or
- // C++. However, since this is likely not what the user intended, we will
- // always warn. We do not need to set the qualifier's location since we
- // already have it.
- if (TypeQualifiers & T) {
- bool IsExtension = true;
- if (Lang.C99)
- IsExtension = false;
+ // Duplicates are permitted in C99 onwards, but are not permitted in C++. In
+ // C90, they are a warning if -pedantic. We do not need to set the
+ // qualifier's location since we already have it.
+ if (TypeQualifiers & T && !Lang.C99) {
+ bool IsExtension = !Lang.CPlusPlus;
return BadSpecifier(T, T, PrevSpec, DiagID, IsExtension);
}
TypeQualifiers |= T;
@@ -967,7 +965,7 @@
unsigned &DiagID) {
if (isModulePrivateSpecified()) {
PrevSpec = "__module_private__";
- DiagID = diag::ext_duplicate_declspec;
+ DiagID = diag::extwarn_duplicate_declspec;
return true;
}
Index: lib/Parse/ParseDecl.cpp
===================================================================
--- lib/Parse/ParseDecl.cpp
+++ lib/Parse/ParseDecl.cpp
@@ -3838,7 +3838,8 @@
assert(PrevSpec && "Method did not return previous specifier!");
assert(DiagID);
- if (DiagID == diag::ext_duplicate_declspec)
+ if (DiagID == diag::ext_duplicate_declspec ||
+ DiagID == diag::extwarn_duplicate_declspec)
Diag(Tok, DiagID)
<< PrevSpec << FixItHint::CreateRemoval(Tok.getLocation());
else if (DiagID == diag::err_opencl_unknown_type_specifier) {
Index: include/clang/Basic/DiagnosticSemaKinds.td
===================================================================
--- include/clang/Basic/DiagnosticSemaKinds.td
+++ include/clang/Basic/DiagnosticSemaKinds.td
@@ -192,7 +192,9 @@
"flexible array initialization is a GNU extension">, InGroup<GNUFlexibleArrayInitializer>;
// Declarations.
-def ext_duplicate_declspec : ExtWarn<"duplicate '%0' declaration specifier">,
+def ext_duplicate_declspec : Extension<"duplicate '%0' declaration specifier">,
+ InGroup<DuplicateDeclSpecifier>;
+def extwarn_duplicate_declspec : ExtWarn<"duplicate '%0' declaration specifier">,
InGroup<DuplicateDeclSpecifier>;
def warn_duplicate_declspec : Warning<"duplicate '%0' declaration specifier">,
InGroup<DuplicateDeclSpecifier>;
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