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Syntactic error in one-liner definition of generated functions with where syntax #22135

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giordano opened this issue May 30, 2017 · 0 comments · Fixed by #22166
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Syntactic error in one-liner definition of generated functions with where syntax #22135

giordano opened this issue May 30, 2017 · 0 comments · Fixed by #22166
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@JeffBezanson
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bug Indicates an unexpected problem or unintended behavior
Milestone
0.6.x

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@giordano
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julia> @generated foo(x::T) where T = x
ERROR: invalid syntax; @generated must be used with a function definition

julia> @generated foo(x::T where T) = x
foo (generic function with 1 method)

julia> @inline foo(x::T) where T = x
foo (generic function with 1 method)

julia> @fastmath foo(x::T) where T = x
foo (generic function with 1 method)

Is there a particular reason why the first definition is a syntactic error?

First reported at https://discourse.julialang.org/t/one-liner-definition-of-generated-functions-with-where-syntax/3982
@JeffBezanson JeffBezanson added the bug Indicates an unexpected problem or unintended behavior label May 31, 2017
@JeffBezanson JeffBezanson added this to the 0.6.x milestone May 31, 2017
@JeffBezanson JeffBezanson self-assigned this May 31, 2017
JeffBezanson added a commit that referenced this issue May 31, 2017
@JeffBezanson
fix some macro expander issues with new 0.6 syntax
4881b57 
fixes #22135, fixes #22122, fixes #22026, fixes #21581
@JeffBezanson JeffBezanson mentioned this issue May 31, 2017
Merged
JeffBezanson added a commit that referenced this issue Jun 1, 2017
@JeffBezanson
fix some macro expander issues with new 0.6 syntax
6bf8906 
fixes #22135, fixes #22122, fixes #22026, fixes #21581
JeffBezanson added a commit that referenced this issue Jun 1, 2017
@JeffBezanson
fix some macro expander issues with new 0.6 syntax
d54e2bc 
fixes #22135, fixes #22122, fixes #22026, fixes #21581, fixes #16096
JeffBezanson added a commit that referenced this issue Jun 1, 2017
@JeffBezanson
fix some macro expander issues with new 0.6 syntax
60675d2 
fixes #22135, fixes #22122, fixes #22026, fixes #21581, fixes #16096, fixes #19351
tkelman pushed a commit that referenced this issue Jun 3, 2017
@JeffBezanson @tkelman
fix some macro expander issues with new 0.6 syntax
2b17759 
fixes #22135, fixes #22122, fixes #22026, fixes #21581, fixes #16096, fixes #19351

(cherry picked from commit 60675d2)
ref #22166
@rfourquet rfourquet changed the title Syntactic erorr in one-liner definition of generated functions with where syntax Syntactic error in one-liner definition of generated functions with where syntax Jun 6, 2017
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@JeffBezanson JeffBezanson

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fix some macro expander issues with new 0.6 syntax JuliaLang/julia
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@JeffBezanson @giordano