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add warning for function declaration with undefined static parameter #46608

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merged 1 commit into from
Sep 6, 2022

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vtjnash
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@vtjnash vtjnash commented Sep 2, 2022

Refs #27813 (does not fix it)

n.b. The change is very simple (just adding the jl_has_typevar call), but I had to shift around a lot of other code to make it so I had access to the file/line/name variables here for the warning message, so the diff is a big mess.

Includes a fix for #42594 detected by this change during the sysimg build.

n.b. this emits a few warnings in the tests, since we have a couple existing tests that explicitly try this

WARNING: method definition for f33135 at /Users/jameson/julia1/test/syntax.jl:1997 declares type variable C1 but does not use it.
WARNING: method definition for bad_tvars at /Users/jameson/julia1/test/core.jl:5211 declares type variable T but does not use it.
WARNING: method definition for bad_tvars2 at /Users/jameson/julia1/test/core.jl:5214 declares type variable T but does not use it.

@vtjnash vtjnash merged commit cfec173 into master Sep 6, 2022
@vtjnash vtjnash deleted the jn/27813-warn branch September 6, 2022 16:31
@vtjnash vtjnash added the backport 1.8 Change should be backported to release-1.8 label Sep 6, 2022
KristofferC pushed a commit that referenced this pull request Sep 7, 2022
@KristofferC KristofferC mentioned this pull request Sep 7, 2022
28 tasks
maleadt pushed a commit to JuliaGPU/CUDA.jl that referenced this pull request Sep 8, 2022
Unbound type parameters often cause performance issues and run time
dispatch.

Issue found using JuliaLang/julia#46608
@aviatesk aviatesk removed the backport 1.8 Change should be backported to release-1.8 label Sep 9, 2022
domluna pushed a commit to domluna/JuliaFormatter.jl that referenced this pull request Sep 12, 2022
Unbound type parameters cause performance issues.

Issue found using JuliaLang/julia#46608
thchr added a commit to thchr/SnoopCompile.jl that referenced this pull request Sep 20, 2022
On Julia master, JuliaLang/julia#46608 gave rise to a precompilation warning for SnoopCompile:

```jl
julia> using SnoopCompile
[ Info: Precompiling SnoopCompile [aa65fe97-06da-5843-b5b1-d5d13cad87d2]
WARNING: method definition for precompilable_time at /home/tchr/.julia/packages/SnoopCompile/J3dtR/src/parcel_snoopi_deep.jl:290 declares type variable T but does not use it.
```
jkrumbiegel pushed a commit to jkrumbiegel/GridLayoutBase.jl that referenced this pull request Oct 1, 2022
Unbound type parameters often cause performance issues and run time
dispatch.

Issue found using JuliaLang/julia#46608
@ericphanson
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Looks like this was missing a NEWS entry? Pretty visible change that is probably somewhat confusing to a lot of folks, because very-downstream packages see it.

(but I am glad to have the warning, I bet with it many of these will be cleaned up very quickly).

pkofod pushed a commit to JuliaNLSolvers/NLSolversBase.jl that referenced this pull request Nov 21, 2022
Unbound type parameters often cause performance issues and run time
dispatch.

Issue found using JuliaLang/julia#46608
pkofod pushed a commit to JuliaNLSolvers/Optim.jl that referenced this pull request Nov 23, 2022
Unbound type parameters often cause performance issues and run time
dispatch.

Issue found using JuliaLang/julia#46608
jverzani pushed a commit to jverzani/AMRVW.jl that referenced this pull request Dec 14, 2022
I didn't check, but unbound type parameters can be serious performance
bugs.

Found with JuliaLang/julia#46608
maleadt pushed a commit to JuliaGPU/CUDA.jl that referenced this pull request Jan 5, 2023
Unbound type parameters often cause performance issues and run time
dispatch.

Issue found using JuliaLang/julia#46608
maleadt pushed a commit to JuliaGPU/CUDA.jl that referenced this pull request Jan 6, 2023
Unbound type parameters often cause performance issues and run time
dispatch.

Issue found using JuliaLang/julia#46608
simonbyrne pushed a commit to simonbyrne/CUDA.jl that referenced this pull request Nov 13, 2023
Unbound type parameters often cause performance issues and run time
dispatch.

Issue found using JuliaLang/julia#46608
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3 participants