lib: Wrapper a function to make gcc-10 happy

gcc-10 is complaining:

lib/frrscript.c:42:14: error: cast between incompatible function types from ‘const char * (*)(lua_State *, const char *)’ to ‘void (*)(lua_State *, const void *)’ [-Werror=cast-function-type]
   42 |   .encoder = (encoder_func)lua_pushstring,
      |              ^

Wrapper it to make it happy.  Not sure what else to do.

Signed-off-by: Donald Sharp <sharpd@nvidia.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/lib/frrlua.h b/lib/frrlua.h
index 8e52931e50..6fb30938b0 100644
--- a/lib/frrlua.h
+++ b/lib/frrlua.h
@@ -35,6 +35,17 @@ extern "C" {
 #endif
 
 /*
+ * gcc-10 is complaining about the wrapper function
+ * not being compatible with lua_pushstring returning
+ * a char *.  Let's wrapper it here to make our life
+ * easier
+ */
+static inline void lua_pushstring_wrapper(lua_State *L, const char *str)
+{
+	(void)lua_pushstring(L, str);
+}
+
+/*
  * Converts a prefix to a Lua value and pushes it on the stack.
  */
 void lua_pushprefix(lua_State *L, const struct prefix *prefix);