Fixup C++ style comments are not allowed in ISO C90 to classic C style.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@78152 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/enable_execute_stack.c b/lib/enable_execute_stack.c
index 15ab03f..c2ebc30 100644
--- a/lib/enable_execute_stack.c
+++ b/lib/enable_execute_stack.c
@@ -1,11 +1,12 @@
-//===-- enable_execute_stack.c - Implement __enable_execute_stack ---------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
+/* ===-- enable_execute_stack.c - Implement __enable_execute_stack ---------===
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ */
 
 #include <stdint.h>
 #include <sys/mman.h>
@@ -14,20 +15,21 @@
 #endif
 
 
-//
-// The compiler generates calls to __enable_execute_stack() when creating 
-// trampoline functions on the stack for use with nested functions.
-// It is expected to mark the page(s) containing the address 
-// and the next 48 bytes as executable.  Since the stack is normally rw-
-// that means changing the protection on those page(s) to rwx. 
-//
+/*
+ * The compiler generates calls to __enable_execute_stack() when creating 
+ * trampoline functions on the stack for use with nested functions.
+ * It is expected to mark the page(s) containing the address 
+ * and the next 48 bytes as executable.  Since the stack is normally rw-
+ * that means changing the protection on those page(s) to rwx. 
+ */
+
 void __enable_execute_stack(void* addr)
 {
 #if __APPLE__
-	// On Darwin, pagesize is always 4096 bytes
+	/* On Darwin, pagesize is always 4096 bytes */
 	const uintptr_t pageSize = 4096;
 #else
-        // FIXME: We should have a configure check for this.
+        /* FIXME: We should have a configure check for this. */
         const uintptr_t pageSize = getpagesize();
 #endif
 	const uintptr_t pageAlignMask = ~(pageSize-1);