x/tools/gopls: corrupt g in printf.run

[adonovan]

#!stacks
"sigpanic" && "printf.run:+0,+0x0"

Issue created by stacks.

This stack LspbBg was reported by telemetry:

• crash/crash
• runtime.throw:+9,+0x37
• runtime.sigpanic:+33,+0x223
• golang.org/x/tools/go/analysis/passes/printf.run:+0,+0x0
• golang.org/x/tools/gopls/internal/cache.(*action).exec.func6:+31,+0x8b
• golang.org/x/tools/gopls/internal/cache.(*action).exec:+199,+0x883
• golang.org/x/tools/gopls/internal/cache.execActions.func1.1:+2,+0x4f
• sync.(*Once).doSlow:+5,+0xef
• sync.(*Once).Do:=69,+0x7f
• golang.org/x/tools/gopls/internal/cache.execActions.func1:+2,+0x50
• runtime.goexit:+0,+0x3

golang.org/x/tools/gopls@v0.19.1 go1.24.4 darwin/arm64 other,vscode (1)

[gabyhelp]

Related Issues

• x/tools/gopls: SEGV in HasSuffix (corrupt string) #74348
• x/tools/gopls: sigpanic in methods of persistent.Map (corrupt g) #74870
• x/tools/gopls: CodeActions: "end < start" panic #74394 (closed)
• x/tools/gopls: growslice crashes while zeroing #74932
• x/tools/gopls: nil deref in x/telemetry/internal/counter.(*Counter).add #73890
• x/tools/gopls: crash in signature help on error.Error #63578 (closed)
• x/tools/gopls: SIGBUS reading string data in os.File.readdir #74565
• x/tools/gopls: xrefs.Index panics after "can't fail" pgf.PosRange #70446 (closed)
• x/tools/gopls: nil deref panic in go.test code action #72907 (closed)
• gopls panics on interface conversion in printf/printf.go #33911 (closed)

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