Allow adding const to function parameter in definition

[jyn514]

Expected behavior

Adding const to a function parameter in the definition should be legal and mark that parameter as const for the duration of the body.

Code

int f(int i);    
int f(const int i) { return i; }
<stdin>:2:6 error: invalid program: redeclaration of 'f' with different type or qualifiers (originally extern int f(int i), now extern int f(int i))

C Standard

Not sure. Possibly relevant:

• 6.2.7, compatible type
• 6.7.3, type qualifiers,
• 6.7.6.3, function declarators, esp. paragraph 15