Use U'...' character literals instead of L'...' character literals

On Windows `L'...'` is 16 bit, so Rust `char` won't generally fit into it.

src/bindgen/ir/constant.rs

@@ -204,7 +204,7 @@ impl Literal {
                     syn::Lit::Byte(ref value) => Ok(Literal::Expr(format!("{}", value.value()))),
                     syn::Lit::Char(ref value) => Ok(Literal::Expr(match value.value() as u32 {
                         0..=255 => format!("'{}'", value.value().escape_default()),
-                        other_code => format!(r"L'\U{:08X}'", other_code),
+                        other_code => format!(r"U'\U{:08X}'", other_code),
                     })),
                     syn::Lit::Int(ref value) => {
                         if value.base10_parse::<i64>().is_err() {

tests/expectations/both/constant.c

@@ -9,11 +9,11 @@
 
 #define DOUBLE_CAST (uint32_t)(float)1
 
-#define EQUID L'\U00010083'
+#define EQUID U'\U00010083'
 
 #define FOO 10
 
-#define HEART L'\U00002764'
+#define HEART U'\U00002764'
 
 #define LEFTCURLY '{'
 

tests/expectations/both/constant.compat.c

@@ -9,11 +9,11 @@
 
 #define DOUBLE_CAST (uint32_t)(float)1
 
-#define EQUID L'\U00010083'
+#define EQUID U'\U00010083'
 
 #define FOO 10
 
-#define HEART L'\U00002764'
+#define HEART U'\U00002764'
 
 #define LEFTCURLY '{'
 

tests/expectations/constant.c

@@ -9,11 +9,11 @@
 
 #define DOUBLE_CAST (uint32_t)(float)1
 
-#define EQUID L'\U00010083'
+#define EQUID U'\U00010083'
 
 #define FOO 10
 
-#define HEART L'\U00002764'
+#define HEART U'\U00002764'
 
 #define LEFTCURLY '{'
 

tests/expectations/constant.compat.c

@@ -9,11 +9,11 @@
 
 #define DOUBLE_CAST (uint32_t)(float)1
 
-#define EQUID L'\U00010083'
+#define EQUID U'\U00010083'
 
 #define FOO 10
 
-#define HEART L'\U00002764'
+#define HEART U'\U00002764'
 
 #define LEFTCURLY '{'
 

tests/expectations/constant.cpp

@@ -10,11 +10,11 @@ static const uint32_t DELIMITER = ':';
 
 static const uint32_t DOUBLE_CAST = (uint32_t)(float)1;
 
-static const uint32_t EQUID = L'\U00010083';
+static const uint32_t EQUID = U'\U00010083';
 
 static const int32_t FOO = 10;
 
-static const uint32_t HEART = L'\U00002764';
+static const uint32_t HEART = U'\U00002764';
 
 static const uint32_t LEFTCURLY = '{';
 

tests/expectations/tag/constant.c

@@ -9,11 +9,11 @@
 
 #define DOUBLE_CAST (uint32_t)(float)1
 
-#define EQUID L'\U00010083'
+#define EQUID U'\U00010083'
 
 #define FOO 10
 
-#define HEART L'\U00002764'
+#define HEART U'\U00002764'
 
 #define LEFTCURLY '{'
 

tests/expectations/tag/constant.compat.c

@@ -9,11 +9,11 @@
 
 #define DOUBLE_CAST (uint32_t)(float)1
 
-#define EQUID L'\U00010083'
+#define EQUID U'\U00010083'
 
 #define FOO 10
 
-#define HEART L'\U00002764'
+#define HEART U'\U00002764'
 
 #define LEFTCURLY '{'