Remove the error about redefining library functions. It's causing too
much pain when compiling the Linux kernel (PR3592).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64767 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Basic/DiagnosticSemaKinds.def b/include/clang/Basic/DiagnosticSemaKinds.def
index 3f7ad9a..11db059 100644
--- a/include/clang/Basic/DiagnosticSemaKinds.def
+++ b/include/clang/Basic/DiagnosticSemaKinds.def
@@ -97,10 +97,6 @@
"incompatible redeclaration of library function %0 will be ignored")
DIAG(err_builtin_definition, ERROR,
"definition of builtin function %0")
-DIAG(err_builtin_lib_definition, ERROR,
- "definition of library function %0 in a hosted implementation")
-DIAG(note_builtin_lib_def_freestanding, NOTE,
- "use -ffreestanding to compile as a freestanding implementation")
/// parser diagnostics
DIAG(ext_typedef_without_a_name, EXTWARN,
diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp
index bf6a637..b5e6bd6 100644
--- a/lib/Sema/SemaDecl.cpp
+++ b/lib/Sema/SemaDecl.cpp
@@ -2802,12 +2802,10 @@
// Builtin functions cannot be defined.
if (unsigned BuiltinID = FD->getBuiltinID(Context)) {
- if (Context.BuiltinInfo.isPredefinedLibFunction(BuiltinID)) {
- Diag(FD->getLocation(), diag::err_builtin_lib_definition) << FD;
- Diag(FD->getLocation(), diag::note_builtin_lib_def_freestanding);
- } else
+ if (!Context.BuiltinInfo.isPredefinedLibFunction(BuiltinID)) {
Diag(FD->getLocation(), diag::err_builtin_definition) << FD;
- FD->setInvalidDecl();
+ FD->setInvalidDecl();
+ }
}
PushDeclContext(FnBodyScope, FD);
diff --git a/test/Sema/implicit-builtin-decl.c b/test/Sema/implicit-builtin-decl.c
index efaf3ed..4c28d8c 100644
--- a/test/Sema/implicit-builtin-decl.c
+++ b/test/Sema/implicit-builtin-decl.c
@@ -36,8 +36,6 @@
}
void * realloc(void *p, int size) { // expected-warning{{incompatible redeclaration of library function 'realloc' will be ignored}} \
-// expected-note{{'realloc' is a builtin with type 'void *(void *, unsigned long)'}} \
-// expected-error{{definition of library function 'realloc' in a hosted implementation}} \
- // expected-note{{use -ffreestanding to compile as a freestanding implementation}}
+// expected-note{{'realloc' is a builtin with type 'void *(void *, unsigned long)'}}
return p;
}