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@rvanasa rvanasa commented Jan 21, 2026

Patch for GHSA-r6q2-hw4h-h46w.

@rvanasa rvanasa requested a review from a team as a code owner January 21, 2026 15:15
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Benchmark Results

bench/1-buffer-vector-add.bench.mo $({\color{green}-8.40\%})$

Add (second)

Add items one-by-one (second)

Instructions: ${\color{green}-8.40\%}$
Heap: ${\color{gray}0\%}$
Stable Memory: ${\color{gray}0\%}$
Garbage Collection: ${\color{gray}0\%}$

Instructions

10 10000 1000000
Buffer 9_493 $({\color{green}-30.14\%})$ 5_687_530 $({\color{green}-8.33\%})$ 525_783_824 $({\color{green}-8.25\%})$
Vector 13_461 $({\color{red}+17.91\%})$ 4_378_548 $({\color{green}-10.82\%})$ 417_864_434 $({\color{green}-10.74\%})$

Heap

10 10000 1000000
Buffer 272 B $({\color{gray}0\%})$ 272 B $({\color{gray}0\%})$ 272 B $({\color{gray}0\%})$
Vector 272 B $({\color{gray}0\%})$ 272 B $({\color{gray}0\%})$ 272 B $({\color{gray}0\%})$

Garbage Collection

10 10000 1000000
Buffer 1.09 KiB $({\color{gray}0\%})$ 143.28 KiB $({\color{gray}0\%})$ 12.02 MiB $({\color{gray}0\%})$
Vector 1.09 KiB $({\color{gray}0\%})$ 45.65 KiB $({\color{gray}0\%})$ 3.86 MiB $({\color{gray}0\%})$
bench/2-vector-buffer-add.bench.mo $({\color{green}-10.20\%})$

Add

Add items one-by-one

Instructions: ${\color{green}-10.20\%}$
Heap: ${\color{gray}0\%}$
Stable Memory: ${\color{gray}0\%}$
Garbage Collection: ${\color{gray}0\%}$

Instructions

10 10000 1000000
Vector 13_461 $({\color{green}-12.68\%})$ 4_378_902 $({\color{green}-10.82\%})$ 417_886_028 $({\color{green}-10.74\%})$
Buffer 9_493 $({\color{green}-10.35\%})$ 5_686_822 $({\color{green}-8.33\%})$ 525_780_992 $({\color{green}-8.25\%})$

Heap

10 10000 1000000
Vector 272 B $({\color{gray}0\%})$ 272 B $({\color{gray}0\%})$ 272 B $({\color{gray}0\%})$
Buffer 272 B $({\color{gray}0\%})$ 272 B $({\color{gray}0\%})$ 272 B $({\color{gray}0\%})$

Garbage Collection

10 10000 1000000
Vector 1.09 KiB $({\color{gray}0\%})$ 45.65 KiB $({\color{gray}0\%})$ 3.86 MiB $({\color{gray}0\%})$
Buffer 1.09 KiB $({\color{gray}0\%})$ 143.28 KiB $({\color{gray}0\%})$ 12.02 MiB $({\color{gray}0\%})$
bench/array.bench.mo $({\color{green}-18.10\%})$

Array

arr arr

Instructions: ${\color{green}-18.10\%}$
Heap: ${\color{gray}0\%}$
Stable Memory: ${\color{gray}0\%}$
Garbage Collection: ${\color{gray}0\%}$

Instructions

100k x1 reset1 100k x3 reset2 100k x4 reset3
Array 13_502_032 $({\color{green}-10.00\%})$ 3_271 $({\color{green}-26.58\%})$ 27_003_206 $({\color{green}-10.00\%})$ 3_745 $({\color{green}-26.18\%})$ 54_004_063 $({\color{green}-10.00\%})$ 4_219 $({\color{green}-25.87\%})$

Heap

100k x1 reset1 100k x3 reset2 100k x4 reset3
Array 390.9 KiB $({\color{gray}0\%})$ -390.37 KiB $({\color{gray}0\%})$ 390.9 KiB $({\color{gray}0\%})$ -390.37 KiB $({\color{gray}0\%})$ 390.9 KiB $({\color{gray}0\%})$ -390.37 KiB $({\color{gray}0\%})$

Garbage Collection

100k x1 reset1 100k x3 reset2 100k x4 reset3
Array 360 B $({\color{gray}0\%})$ 390.97 KiB $({\color{gray}0\%})$ 391 KiB $({\color{gray}0\%})$ 390.97 KiB $({\color{gray}0\%})$ 1.14 MiB $({\color{gray}0\%})$ 390.97 KiB $({\color{gray}0\%})$
bench/removeLast.bench.mo $({\color{green}-10.90\%})$

Remove items using removeLast

Vector and buffer are initialized with 100k items and then 70k items are removed one-by-one.

Instructions: ${\color{green}-10.90\%}$
Heap: ${\color{gray}0\%}$
Stable Memory: ${\color{gray}0\%}$
Garbage Collection: ${\color{gray}0\%}$

Instructions

remove 70k
Vector 27_707_652 $({\color{green}-13.98\%})$
Buffer 29_236_913 $({\color{green}-7.82\%})$

Heap

remove 70k
Vector -136.8 KiB $({\color{gray}0\%})$
Buffer -269.76 KiB $({\color{gray}0\%})$

Garbage Collection

remove 70k
Vector 139.45 KiB $({\color{gray}0\%})$
Buffer 540.43 KiB $({\color{gray}0\%})$
bench/stable-memory.bench.mo $({\color{green}-134.72\%})$

Stable Memory and Region

Grow Region and store blobs in it

Instructions: ${\color{green}-67.65\%}$
Heap: ${\color{green}-6.10\%}$
Stable Memory: ${\color{gray}0\%}$
Garbage Collection: ${\color{green}-60.97\%}$

Instructions

Region (fill 1/100) Region (fill 1/50) StableMemory
10 pages 2_626_941 $({\color{green}-95.97\%})$ 10_496_374 $({\color{green}-95.97\%})$ 2_629 $({\color{green}-8.11\%})$
100 pages 52_466_833 $({\color{green}-95.97\%})$ 104_914_386 $({\color{green}-95.97\%})$ 2_634 $({\color{green}-10.83\%})$
256 pages 134_273_326 $({\color{green}-95.97\%})$ 268_574_623 $({\color{green}-95.97\%})$ 3_182 $({\color{green}-14.09\%})$

Heap

Region (fill 1/100) Region (fill 1/50) StableMemory
10 pages 272 B $({\color{green}-8.11\%})$ 272 B $({\color{gray}0\%})$ 276 B $({\color{gray}0\%})$
100 pages 272 B $({\color{green}-11.69\%})$ 272 B $({\color{green}-11.69\%})$ 272 B $({\color{gray}0\%})$
256 pages 272 B $({\color{green}-11.69\%})$ 272 B $({\color{green}-11.69\%})$ 276 B $({\color{gray}0\%})$

Garbage Collection

Region (fill 1/100) Region (fill 1/50) StableMemory
10 pages 208.34 KiB $({\color{green}-91.44\%})$ 832.38 KiB $({\color{green}-91.45\%})$ 336 B $({\color{gray}0\%})$
100 pages 4.06 MiB $({\color{green}-91.46\%})$ 8.13 MiB $({\color{green}-91.46\%})$ 340 B $({\color{gray}0\%})$
256 pages 10.4 MiB $({\color{green}-91.46\%})$ 20.8 MiB $({\color{green}-91.46\%})$ 340 B $({\color{gray}0\%})$

Stable Memory

Region (fill 1/100) Region (fill 1/50) StableMemory
10 pages 8 MiB $({\color{gray}0\%})$ 8 MiB $({\color{gray}0\%})$ 8 MiB $({\color{gray}0\%})$
100 pages 8 MiB $({\color{gray}0\%})$ 8 MiB $({\color{gray}0\%})$ 0 B $({\color{gray}0\%})$
256 pages 16 MiB $({\color{gray}0\%})$ 16 MiB $({\color{gray}0\%})$ 16 MiB $({\color{gray}0\%})$

@rvanasa rvanasa merged commit 3b81c31 into main Jan 21, 2026
23 checks passed
@rvanasa rvanasa deleted the patch-tar branch January 21, 2026 21:59
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2 participants