Difference between using `||` and `or`

[omegahm]

In this example:

if (is_add_sub(instr.opcode) || is_mul_div(instr.opcode)) { ... }
if (is_add_sub(instr.opcode) or is_mul_div(instr.opcode)) { ... }

When using || both functions will be support.function.any-method.c, however when using or the second function gets variable.other.c scope instead.

It even fails in the above markdown. 😢

[thomasjo]

This is because or is not a valid C keyword, and the introduction of a variable in this expression is not valid. Hence the grammar doesn't handle this either.

[omegahm]

But this is C++ and C++ is selected as language. or is valid C++.

[thomasjo]

OK, then I agree that this seems like a bug in the grammar.

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For future reference, it would be helpful with more details such as the fact you were working with C++ and not C. Especially since the scope you provided alluded to this being C code.