Mono AOT compiler crashes with: condition `p - buf < buf_size' not met

[rolfbjarne]

Description

Crash when AOT-compiling my code.

Reproduction Steps

Clone https://github.com/rolfbjarne/bug-repros and run ./2025-02-24-mono-aot-crash/repro.sh:

$ ./2025-02-24-mono-aot-crash/repro.sh
++ dirname ./2025-02-24-mono-aot-crash/repro.sh
+ cd ./2025-02-24-mono-aot-crash
+ /usr/local/share/dotnet/packs/Microsoft.NETCore.App.Runtime.AOT.osx-arm64.Cross.maccatalyst-arm64/9.0.0/Sdk/../tools/mono-aot-cross --path=./linked --aot=mtriple=arm64-apple-ios15.0-macabi,data-outfile=./monotouchtest.aotdata,static,asmonly,dedup-skip,direct-icalls,full,soft-debug,dwarfdebug,no-direct-calls,outfile=./monotouchtest.dll.s --debug -O=gsharedvt ./linked/monotouchtest.dll
Mono Ahead of Time compiler - compiling assembly [...]/bug-repros/2025-02-24-mono-aot-crash/linked/monotouchtest.dll
AOTID 1085CE5E-EB01-C3CC-909A-0C25AB930848
* Assertion at /Users/runner/work/1/s/src/mono/mono/mini/aot-compiler.c:8037, condition `p - buf < buf_size' not met

./2025-02-24-mono-aot-crash/repro.sh: line 9: 96539 Abort trap: 6           /usr/local/share/dotnet/packs/Microsoft.NETCore.App.Runtime.AOT.osx-arm64.Cross.maccatalyst-arm64/9.0.0/Sdk/../tools/mono-aot-cross --path=./linked --aot=mtriple=arm64-apple-ios15.0-macabi,data-outfile=./monotouchtest.aotdata,static,asmonly,dedup-skip,direct-icalls,full,soft-debug,dwarfdebug,no-direct-calls,outfile=./monotouchtest.dll.s --debug -O=gsharedvt ./linked/monotouchtest.dll

Note: you'll probably have to adjust the path to the mono-aot-cross binary in the script.

Expected behavior

No crash.

Actual behavior

Crash.

Crash report: https://github.com/rolfbjarne/bug-repros/blob/main/2025-02-24-mono-aot-crash/mono-aot-cross-2025-02-24-101943.txt

Regression?

No, this happened as I was adding code to a test project. Removing the new code fixes the crash.

Known Workarounds

No

Configuration

$ dotnet --info
.NET SDK:
 Version:           9.0.103
 Commit:            049799c39d
 Workload version:  9.0.101.2
 MSBuild version:   17.12.21+f7f4b086d

Runtime Environment:
 OS Name:     Mac OS X
 OS Version:  14.7
 OS Platform: Darwin
 RID:         osx-arm64
 Base Path:   /usr/local/share/dotnet/sdk/9.0.103/

.NET workloads installed:
 [macos]
   Installation Source: SDK 9.0.100
   Manifest Version:    15.2.9170/9.0.100
   Manifest Path:       /usr/local/share/dotnet/sdk-manifests/9.0.100/microsoft.net.sdk.macos/15.2.9170/WorkloadManifest.json
   Install Type:        FileBased

 [maui-ios]
   Installation Source: SDK 9.0.100
   Manifest Version:    9.0.0/9.0.100
   Manifest Path:       /usr/local/share/dotnet/sdk-manifests/9.0.100/microsoft.net.sdk.maui/9.0.0/WorkloadManifest.json
   Install Type:        FileBased

 [ios]
   Installation Source: SDK 9.0.100
   Manifest Version:    18.2.9170/9.0.100
   Manifest Path:       /usr/local/share/dotnet/sdk-manifests/9.0.100/microsoft.net.sdk.ios/18.2.9170/WorkloadManifest.json
   Install Type:        FileBased

 [maccatalyst]
   Installation Source: SDK 9.0.100
   Manifest Version:    18.2.9170/9.0.100
   Manifest Path:       /usr/local/share/dotnet/sdk-manifests/9.0.100/microsoft.net.sdk.maccatalyst/18.2.9170/WorkloadManifest.json
   Install Type:        FileBased

 [maui]
   Installation Source: SDK 9.0.100
   Manifest Version:    9.0.0/9.0.100
   Manifest Path:       /usr/local/share/dotnet/sdk-manifests/9.0.100/microsoft.net.sdk.maui/9.0.0/WorkloadManifest.json
   Install Type:        FileBased

 [tvos]
   Installation Source: SDK 9.0.100
   Manifest Version:    18.2.9170/9.0.100
   Manifest Path:       /usr/local/share/dotnet/sdk-manifests/9.0.100/microsoft.net.sdk.tvos/18.2.9170/WorkloadManifest.json
   Install Type:        FileBased

 [android]
   Installation Source: SDK 9.0.100
   Manifest Version:    35.0.24/9.0.100
   Manifest Path:       /usr/local/share/dotnet/sdk-manifests/9.0.100/microsoft.net.sdk.android/35.0.24/WorkloadManifest.json
   Install Type:        FileBased

Configured to use workload sets when installing new manifests.

Host:
  Version:      9.0.1
  Architecture: arm64
  Commit:       c8acea2262

.NET SDKs installed:
  7.0.410 [/usr/local/share/dotnet/sdk]
  8.0.304 [/usr/local/share/dotnet/sdk]
  8.0.402 [/usr/local/share/dotnet/sdk]
  9.0.100 [/usr/local/share/dotnet/sdk]
  9.0.102 [/usr/local/share/dotnet/sdk]
  9.0.103 [/usr/local/share/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 7.0.20 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 8.0.8 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 9.0.0-rc.2.24474.3 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 9.0.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 9.0.1 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 6.0.36 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 7.0.20 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 8.0.8 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 9.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 9.0.1 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

Other architectures found:
  None

Environment variables:
  Not set

global.json file:
  /Users/rolf/work/dotnet/macios/main/macios/global.json

Learn more:
  https://aka.ms/dotnet/info

Download .NET:
  https://aka.ms/dotnet/download

Other information

No response