[over.oper.general] p7 Precedence is not a formal wording nor specified
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Description
[over.oper.general] p7 says
It is not possible to change the precedence, grouping, or number of operands of operators.
The "precedence" is not directly specified in this document, it is implied by the syntaxes of the grammar of expressions. [expr.footnote] p42 says
The precedence of operators is not directly specified, but it can be derived from the syntax.
It is plausible to use syntax in this wording to imply the precedence is not changed.
It is not possible to change the syntax, grouping, or number of operands of operators.
A + B * C;
Assume that A, B, and C are of class types. The expression is interpreted as additive-expression + multiplicative-expression rather than additive-expression * id-expression.
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Research direction
Start at [over.oper.general] p7 and compare its wording with [expr.footnote] p42, using the A + B * C example to understand how precedence follows from grammar syntax. Done means deciding whether the wording should say “syntax” and updating the relevant standards-draft text consistently.
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Assessment
- Tech stack
- tex
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- documentation
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- Documentation
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- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100