diff options
| -rw-r--r-- | src/librustc_error_codes/error_codes/E0745.md | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/src/librustc_error_codes/error_codes/E0745.md b/src/librustc_error_codes/error_codes/E0745.md index 6595691ce78..23ee7af30f4 100644 --- a/src/librustc_error_codes/error_codes/E0745.md +++ b/src/librustc_error_codes/error_codes/E0745.md @@ -1,20 +1,23 @@ -Cannot take address of temporary value. +The address of temporary value was taken. Erroneous code example: ```compile_fail,E0745 # #![feature(raw_ref_op)] fn temp_address() { - let ptr = &raw const 2; // ERROR + let ptr = &raw const 2; // error! } ``` -To avoid the error, first bind the temporary to a named local variable. +In this example, `2` is destroyed right after the assignment, which means that +`ptr` now points to an unavailable location. + +To avoid this error, first bind the temporary to a named local variable: ``` # #![feature(raw_ref_op)] fn temp_address() { let val = 2; - let ptr = &raw const val; + let ptr = &raw const val; // ok! } ``` |