__builtin_prefetch should be declared as "void __builtin_prefetch(const void *)",

not "const void __builtin_prefetch(void *)".  This fixes PR3912.

llvm-svn: 69425

2 files changed, 7 insertions, 2 deletions

diff --git a/clang/include/clang/AST/Builtins.def b/clang/include/clang/AST/Builtins.def
index 9e2e7859ee0..766cb1143dd 100644
--- a/clang/include/clang/AST/Builtins.def
+++ b/clang/include/clang/AST/Builtins.def
@@ -186,7 +186,7 @@ BUILTIN(__builtin___vfprintf_chk, "iP*icC*a", "FP:2:")
 BUILTIN(__builtin___vprintf_chk, "iicC*a", "FP:1:")
 
 BUILTIN(__builtin_expect, "iii"   , "nc")
-BUILTIN(__builtin_prefetch, "vCv*.", "nc")
+BUILTIN(__builtin_prefetch, "vvC*.", "nc")
 BUILTIN(__builtin_trap, "v", "n")
 
 BUILTIN(__builtin_shufflevector, "v."   , "nc")
diff --git a/clang/test/Sema/statements.c b/clang/test/Sema/statements.c
index 3af984ada45..9a71a403700 100644
--- a/clang/test/Sema/statements.c
+++ b/clang/test/Sema/statements.c
@@ -21,4 +21,9 @@ int test6() { return ({5;}); }
 void test7() { ({5;}); }                   // expected-warning {{expression result unused}}
 
 // PR3062
-int x[({10;})]; // expected-error {{statement expression not allowed at file scope}}
+int test8[({10;})]; // expected-error {{statement expression not allowed at file scope}}
+
+// PR3912
+void test9(const void *P) {
+  __builtin_prefetch(P);
+}