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Macros accept empty repetitions which hang the compiler #28085

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jonas-schievink opened this issue Aug 29, 2015 · 1 comment
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Macros accept empty repetitions which hang the compiler #28085

jonas-schievink opened this issue Aug 29, 2015 · 1 comment
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A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..)

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@jonas-schievink
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This causes an infinite loop:

macro_rules! m {
    ( $()+ )  => ();
}

m!();
@steveklabnik steveklabnik added the A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) label Sep 3, 2015
@jonas-schievink jonas-schievink mentioned this issue Oct 13, 2015
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@jonas-schievink
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Looks like a duplicate of #24858, so I'll close this

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@steveklabnik @jonas-schievink