deadprogram c1f48fc79a loader, crypto/internal/entropy: fix 32 MiB RAM overflow on microcontrollers ...

Go 1.26 added a CPU jitter-based SP 800-90B entropy source for FIPS 140-3
compliance (crypto/internal/entropy/v1.0.0). It declares a 32 MiB global
ScratchBuffer ([1<<25]byte) used for memory access timing noise. On systems
with virtual memory this stays in .noptrbss and is lazily paged, but on
baremetal targets it becomes static RAM, causing fatal overflow (e.g.
pybadge with 192 KB SRAM reports 33 MB overflow).

Since FIPS jitter entropy is never used on TinyGo targets (fips140.Enabled
is always false, so drbg.Read falls through to sysrand.Read), provide a
TinyGo overlay that replaces ScratchBuffer with [0]byte and stubs out all
entropy functions with panics.

2026-04-11 12:38:36 +01:00

..

errors.go

main: match go test output

2021-05-06 20:04:16 +02:00

goroot.go

loader, crypto/internal/entropy: fix 32 MiB RAM overflow on microcontrollers

2026-04-11 12:38:36 +01:00

list.go

compileopts: always enable CGo

2024-02-19 17:53:36 +01:00

loader_go122.go

loader: make sure Go version is plumbed through

2024-01-19 21:23:58 +01:00

loader.go

loader: support "all:" prefix in //go:embed patterns

2026-04-05 14:15:40 +02:00

ssa.go

go.*: upgrade golang.org/x/tools to v0.30.0, Go to 1.22

2025-05-06 10:05:20 +02:00