Vsnprintf's a warning into the buffer if eastl::to_string is used.

 * unfortunately, a compile time warning is not feasable w/o modifying EASTL sources

Signed-off-by: Toni Uhlig <matzeton@googlemail.com>

3 files changed, 41 insertions, 0 deletions

diff --git a/CRT/eastl_user_config.hpp b/CRT/eastl_user_config.hpp
new file mode 100644
index 0000000..5a2f733
--- /dev/null
+++ b/CRT/eastl_user_config.hpp
@@ -0,0 +1,37 @@
+#ifndef EASTL_USER_CONFIG_HPP
+#define EASTL_USER_CONFIG_HPP 1
+
+#include <string.h>
+
+extern "C" {
+static inline int snprintf_eastl_to_string_warning(char * out, unsigned long long int size)
+{
+    const char msg[] = "!!! DO NOT USE eastl::to_string !!!";
+    const unsigned long long int msg_size = sizeof(msg);
+
+    if (out == NULL || size < msg_size)
+    {
+        return sizeof(msg);
+    }
+
+    memcpy(out, msg, msg_size);
+    return msg_size;
+}
+
+static inline int Vsnprintf8(char * out, unsigned long long int size, const char *, char *)
+{
+    return snprintf_eastl_to_string_warning(out, size);
+}
+
+static inline int Vsnprintf16(char * out, unsigned long long int size, const char *, char *)
+{
+    return snprintf_eastl_to_string_warning(out, size);;
+}
+
+static inline int Vsnprintf32(char * out, unsigned long long int size, const char *, char *)
+{
+    return snprintf_eastl_to_string_warning(out, size);
+}
+};
+
+#endif
diff --git a/Makefile.inc b/Makefile.inc
index 49f6e7b..1689579 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -61,6 +61,7 @@ endif
 
 CXXFLAGS := -fno-exceptions -fno-rtti -fuse-cxa-atexit
 EASTL_CXXFLAGS := -I$(DPP_ROOT)/EASTL/include -I$(DPP_ROOT)/EASTL/test/packages/EABase/include/Common \
+	-DEASTL_USER_CONFIG_HEADER="<eastl_user_config.hpp>" \
 	-DEASTL_EABASE_DISABLED=1 \
 	-DEASTL_THREAD_SUPPORT_AVAILABLE=0 \
 	-DEASTL_EXCEPTIONS_ENABLED=0 \
diff --git a/examples/dpp-example-cplusplus.cpp b/examples/dpp-example-cplusplus.cpp
index 736fb32..50ff6b0 100644
--- a/examples/dpp-example-cplusplus.cpp
+++ b/examples/dpp-example-cplusplus.cpp
@@ -19,6 +19,9 @@ public:
     {
         DbgPrint("%s\n", "Hello Class!");
 
+        const auto & eastl_to_string = eastl::to_string(0xDEADC0DE);
+        DbgPrint("Using eastl::to_string should return a warning: %s\n", eastl_to_string.c_str());
+
         const auto & number_ud = ::to_string(1337u);
         DbgPrint("Value 1337u to String: %s\n", number_ud.c_str());
         const auto & number_d = ::to_string(1337);