py: Workaround clang error when building misc.h with C++ compiler.
@@ -273,7 +273,12 @@ typedef union _mp_float_union_t {
// Map MP_COMPRESSED_ROM_TEXT to the compressed strings.
// Force usage of the MP_ERROR_TEXT macro by requiring an opaque type.
-typedef struct {} *mp_rom_error_text_t;
+typedef struct {
+ #ifdef __clang__
+ // Fix "error: empty struct has size 0 in C, size 1 in C++".
+ char dummy;
+ #endif
+} *mp_rom_error_text_t;
#include <string.h>
