tree 0a0de57e2d21f2dba4b080ecbb2de26a2d30320b
parent e64fee6a38c27dcfbc26a276c8915f44b1091083
parent 339148d6635215cc1b49c2e5e2841074c51d1747
author bors <bors@rust-lang.org> 1546672813 +0000
committer bors <bors@rust-lang.org> 1546672813 +0000

Auto merge of #57019 - QuietMisdreavus:semi-revert-doctest-parsing, r=GuillaumeGomez

[beta] rustdoc: semi-revert libsyntax doctest parsing if a macro is wrapping main

Fixes https://github.com/rust-lang/rust/issues/56898

This is a patch to doctest parsing on beta (that i plan to "forward-port" to master) that reverts to the old text-based `fn main` scan if it found a macro invocation in the doctest but did not find a main function. This should solve situations like `allocator_api` which wrap their main functions in a macro invocation, but doesn't solve something like the initial version of `quicli` which used a macro to *generate* the main function. (Properly doing the latter involves running macro expansion before checking, which is a bit too involved for a beta fix.)