Fix E0531: Const Static Initializer Error in Rust

Mon, 03 Aug 2026 15:08:04 +0800

1. Symptoms

When Rust code triggers error E0531, the compiler produces diagnostic output indicating that a constant expression cannot be evaluated at compile time. The error manifests when attempting to initialize a const or static item with a value that requires runtime computation or contains non-constant operations.

The compiler displays the error with the following characteristics:

error[E0531]: const static initializer观摩会影响常量求值
 --> src/main.rs:X:Y
  |
X | const MY_CONST: u32 = some_function();
  |                    ^^^^^^^^^^^^^^^^^^^ cannot use a non-const function

Additional symptoms include:

E0531 on ErrorVault — Developer Error Code Dictionary

Fix E0531: Const Static Initializer Error in Rust

1. Symptoms