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runtime: allocation headers GOEXPERIMENT breaks user arena tests on big endian builders #64048

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mknyszek opened this issue Nov 9, 2023 · 1 comment
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runtime: allocation headers GOEXPERIMENT breaks user arena tests on big endian builders #64048

mknyszek opened this issue Nov 9, 2023 · 1 comment
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compiler/runtime Issues related to the Go compiler and/or runtime. NeedsFix The path to resolution is known, but the work has not been done.
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Go1.22

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mknyszek commented Nov 9, 2023 

#!watchflakes
post <- pkg == "runtime" && `TestUserArena` && (goarch == "ppc64" || goarch == "mips" || goarch == "mips64" || goarch == "s390x")

Example failure on linux-ppc64-sid-buildlet: https://build.golang.org/log/69bfcc3343f81bfc5c2d5a2bda3d8f8269e5b1ea

This is purely an issue on big endian machines with the allocation headers GOEXPERIMENT, and only for the user arenas feature which is also behind a GOEXPERIMENT. The fix is up for review here: https://go.dev/cl/541315.
@mknyszek mknyszek added the NeedsFix The path to resolution is known, but the work has not been done. label Nov 9, 2023
@mknyszek mknyszek added this to the Go1.22 milestone Nov 9, 2023
@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Nov 9, 2023
@mknyszek mknyszek self-assigned this Nov 9, 2023
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Change https://go.dev/cl/541315 mentions this issue: runtime: fix user arena heap bits writing on big endian platforms

This was referenced Nov 10, 2023
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compiler/runtime Issues related to the Go compiler and/or runtime. NeedsFix The path to resolution is known, but the work has not been done.
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