Comment #0 by bearophile_hugs — 2011-05-15T05:21:23Z
This is D code adapted from a blog post about C language:
http://eli.thegreenplace.net/2011/05/02/the-context-sensitivity-of-c%E2%80%99s-grammar-revisited/http://www.reddit.com/r/programming/comments/h23h3/the_context_sensitivity_of_cs_grammar_revisited/
Three little D2 programs that compile with no errors. Similar code is allowed in C too:
------------
alias int Foo;
void foo() {
Foo bar;
float Foo;
}
void main() {}
------------
alias int Foo;
void foo() {
Foo Foo;
int bar = Foo + 2;
assert (bar == 2);
}
void main() {}
------------
alias char Foo;
void foo() {
int bar = Foo.sizeof, Foo, spam = Foo.sizeof;
assert(bar == 1);
assert(spam == 4);
}
void main() {}
------------
Is it OK to keep allowing such kind of code in D2 too? Or is it better to statically forbid it?
A disadvantage of statically disallowing it is the breakage of some valid C code. On the other hand I don't want to find code like that in D programs.
Comment #1 by robert.schadek — 2024-12-13T17:55:13Z