Static variables and functions won't collide with standard library

functions, so if we're declaring a static we should implicitly declare
a library function by the same name (e.g., malloc, strdup). Fixes PR3592.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64736 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 7 insertions, 1 deletions

diff --git a/test/Sema/implicit-builtin-decl.c b/test/Sema/implicit-builtin-decl.c
index 892e372eff..efaf3ed455 100644
--- a/test/Sema/implicit-builtin-decl.c
+++ b/test/Sema/implicit-builtin-decl.c
@@ -41,4 +41,3 @@ void * realloc(void *p, int size) { // expected-warning{{incompatible redeclarat
   // expected-note{{use -ffreestanding to compile as a freestanding implementation}}
   return p;
 }
-
diff --git a/test/Sema/implicit-builtin-redecl.c b/test/Sema/implicit-builtin-redecl.c
new file mode 100644
index 0000000000..837f79f4ef
--- /dev/null
+++ b/test/Sema/implicit-builtin-redecl.c
@@ -0,0 +1,7 @@
+// RUN: clang -fsyntax-only -verify %s
+
+// PR3592
+static void* malloc(int);
+static void* malloc(int size) {
+  return ((void*)0); /*do not use heap in this file*/
+}