Changed to whitelist

Author: korken89

cortex-m-rt/macros/src/lib.rs

@@ -832,7 +832,7 @@ fn extract_cfgs(attrs: Vec<Attribute>) -> (Vec<Attribute>, Vec<Attribute>) {
 
 fn check_for_blacklisted_attrs(attrs: &[Attribute]) -> Option<TokenStream> {
     if let Some(val) = containts_blacklist_attrs(attrs) {
-        return Some(parse::Error::new(val.span(), "This attribute is not allowed [blacklisted]")
+        return Some(parse::Error::new(val.span(), "this attribute is not allowed on a function controlled by cortex-m-rt")
             .to_compile_error()
             .into());
     }
@@ -841,11 +841,11 @@ fn check_for_blacklisted_attrs(attrs: &[Attribute]) -> Option<TokenStream> {
 }
 
 fn containts_blacklist_attrs(attrs: &[Attribute]) -> Option<Attribute> {
-    let blacklist = &["inline", "export_name", "no_mangle", "must_use"];
+    let whitelist = &["doc", "link_section"];
 
     for attr in attrs {
-        for val in blacklist {
-            if eq(&attr, &val) {
+        for val in whitelist {
+            if !eq(&attr, &val) {
                 return Some(attr.clone());
             }
         }

cortex-m-rt/tests/compile-fail/blacklist-1.rs

@@ -6,13 +6,13 @@ extern crate panic_halt;
 
 use cortex_m_rt::{entry, exception, interrupt};
 
-#[inline] //~ ERROR This attribute is not allowed [blacklisted]
+#[inline] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
 #[entry]
 fn foo() -> ! {
     loop {}
 }
 
-#[inline] //~ ERROR This attribute is not allowed [blacklisted]
+#[inline] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
 #[exception]
 fn SysTick() {}
 
@@ -21,6 +21,6 @@ enum interrupt {
     USART1,
 }
 
-#[inline] //~ ERROR This attribute is not allowed [blacklisted]
+#[inline] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
 #[interrupt]
 fn USART1() {}

cortex-m-rt/tests/compile-fail/blacklist-2.rs

@@ -6,13 +6,13 @@ extern crate panic_halt;
 
 use cortex_m_rt::{entry, exception, interrupt};
 
-#[export_name = "not_allowed"] //~ ERROR This attribute is not allowed [blacklisted]
+#[export_name = "not_allowed"] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
 #[entry]
 fn foo() -> ! {
     loop {}
 }
 
-#[export_name = "not_allowed"] //~ ERROR This attribute is not allowed [blacklisted]
+#[export_name = "not_allowed"] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
 #[exception]
 fn SysTick() {}
 
@@ -21,6 +21,6 @@ enum interrupt {
     USART1,
 }
 
-#[export_name = "not_allowed"] //~ ERROR This attribute is not allowed [blacklisted]
+#[export_name = "not_allowed"] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
 #[interrupt]
 fn USART1() {}

cortex-m-rt/tests/compile-fail/blacklist-3.rs

@@ -6,13 +6,13 @@ extern crate panic_halt;
 
 use cortex_m_rt::{entry, exception, interrupt};
 
-#[no_mangle] //~ ERROR This attribute is not allowed [blacklisted]
+#[no_mangle] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
 #[entry]
 fn foo() -> ! {
     loop {}
 }
 
-#[no_mangle] //~ ERROR This attribute is not allowed [blacklisted]
+#[no_mangle] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
 #[exception]
 fn SysTick() {}
 
@@ -21,6 +21,6 @@ enum interrupt {
     USART1,
 }
 
-#[no_mangle] //~ ERROR This attribute is not allowed [blacklisted]
+#[no_mangle] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
 #[interrupt]
 fn USART1() {}

cortex-m-rt/tests/compile-fail/blacklist-4.rs

@@ -6,13 +6,13 @@ extern crate panic_halt;
 
 use cortex_m_rt::{entry, exception, interrupt};
 
-#[must_use] //~ ERROR This attribute is not allowed [blacklisted]
+#[must_use] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
 #[entry]
 fn foo() -> ! {
     loop {}
 }
 
-#[must_use] //~ ERROR This attribute is not allowed [blacklisted]
+#[must_use] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
 #[exception]
 fn SysTick() {}
 
@@ -21,6 +21,6 @@ enum interrupt {
     USART1,
 }
 
-#[must_use] //~ ERROR This attribute is not allowed [blacklisted]
+#[must_use] //~ ERROR this attribute is not allowed on a function controlled by cortex-m-rt
 #[interrupt]
 fn USART1() {}