| Issue |
164930
|
| Summary |
C23 parsing of auto type inference doesn't correctly consider typedefs
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
Halalaluyafail3
|
The following program demonstrates the issue:
```c
int main(){
typedef int x;
{
auto x y;
}
}
```
The declaration `auto x y;` should be "declaration of y with type x" where auto has no effect because it's not specifying type inference here. However, in C23 mode Clang will see the `x` after `auto` and then assume that it should be "declaration of x with inferred type". Afterwards it will then complain because there is no initializer. GCC and Clang in pre-C23 modes will accept this code. Related to #164921 example 3, but I split this into a separate issue because it changes the meaning of valid code.
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