diff --git a/core/src/num/mod.rs b/core/src/num/mod.rs
index 5a69dc0c7242b..61beedfcd5d26 100644
--- a/core/src/num/mod.rs
+++ b/core/src/num/mod.rs
@@ -1433,6 +1433,7 @@ macro_rules! from_str_radix_int_impl {
         #[stable(feature = "rust1", since = "1.0.0")]
         impl FromStr for $t {
             type Err = ParseIntError;
+            #[inline]
             fn from_str(src: &str) -> Result<Self, ParseIntError> {
                 <$t>::from_str_radix(src, 10)
             }
@@ -1505,6 +1506,7 @@ macro_rules! from_str_radix {
             /// ```
             #[stable(feature = "rust1", since = "1.0.0")]
             #[rustc_const_stable(feature = "const_int_from_str", since = "1.82.0")]
+            #[inline]
             pub const fn from_str_radix(src: &str, radix: u32) -> Result<$int_ty, ParseIntError> {
                 use self::IntErrorKind::*;
                 use self::ParseIntError as PIE;
@@ -1649,6 +1651,7 @@ macro_rules! from_str_radix_size_impl {
         /// ```
         #[stable(feature = "rust1", since = "1.0.0")]
         #[rustc_const_stable(feature = "const_int_from_str", since = "1.82.0")]
+        #[inline]
         pub const fn from_str_radix(src: &str, radix: u32) -> Result<$size, ParseIntError> {
             match <$t>::from_str_radix(src, radix) {
                 Ok(x) => Ok(x as $size),