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Mono is unable to find assemblies named with some international characters #103276

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#103363
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Mono is unable to find assemblies named with some international characters#103276
#103363
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fanyang-mono
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area-VM-meta-mono
Milestone
9.0.0
@rolfbjarne

Description

@rolfbjarne
rolfbjarne
opened on Jun 11, 2024

Description

Type.GetType fails if using fully qualified assembly names where the assembly has certain international characters.

Reproduction Steps

Test case: testcase-3df4585.zip

Execute this to see failure:

$ rm -rf bin obj
$ dotnet build /p:AssemblyName=工程
$ bin/Debug/net8.0-maccatalyst/maccatalyst-*/工程.app/Contents/MacOS/工程

The test code is doing this:

var aqn = GetType ().AssemblyQualifiedName!;
var t = Type.GetType (aqn);
if (t is null) {
	Console.WriteLine ($"❌ FAILED could not find the type '{aqn}'");
} else {
	Console.WriteLine ($"✅ PASSED found {t.AssemblyQualifiedName}");
}

Expected behavior

✅ PASSED found testcase.AppDelegate, 工程, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null

Actual behavior

❌ FAILED could not find the type 'testcase.AppDelegate, 工程, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'

Regression?

I don't think so.

Known Workarounds

Stick to ASCII...

Configuration

 $ dotnet --info
.NET SDK:
 Version:           8.0.301
 Commit:            1a0e9c0300
 Workload version:  8.0.300-manifests.3a2c5bc5
 MSBuild version:   17.10.4+10fbfbf2e

Runtime Environment:
 OS Name:     Mac OS X
 OS Version:  14.5
 OS Platform: Darwin
 RID:         osx-arm64
 Base Path:   /usr/local/share/dotnet/sdk/8.0.301/

.NET workloads installed:
 [maui-maccatalyst]
   Installation Source: SDK 8.0.300
   Manifest Version:    8.0.21/8.0.100
   Manifest Path:       /usr/local/share/dotnet/sdk-manifests/8.0.100/microsoft.net.sdk.maui/8.0.21/WorkloadManifest.json
   Install Type:        FileBased

 [ios]
   Installation Source: SDK 8.0.300
   Manifest Version:    17.2.8473-ci.main/8.0.100
   Manifest Path:       /usr/local/share/dotnet/sdk-manifests/8.0.100/microsoft.net.sdk.ios/17.2.8473-ci.main/WorkloadManifest.json
   Install Type:        FileBased

 [maccatalyst]
   Installation Source: SDK 8.0.300
   Manifest Version:    17.2.8473-ci.main/8.0.100
   Manifest Path:       /usr/local/share/dotnet/sdk-manifests/8.0.100/microsoft.net.sdk.maccatalyst/17.2.8473-ci.main/WorkloadManifest.json
   Install Type:        FileBased


Host:
  Version:      9.0.0-preview.4.24266.19
  Architecture: arm64
  Commit:       d0d6fed6c0

.NET SDKs installed:
  7.0.311 [/usr/local/share/dotnet/sdk]
  8.0.100 [/usr/local/share/dotnet/sdk]
  8.0.104 [/usr/local/share/dotnet/sdk]
  8.0.201 [/usr/local/share/dotnet/sdk]
  8.0.301 [/usr/local/share/dotnet/sdk]
  9.0.100-preview.3.24153.2 [/usr/local/share/dotnet/sdk]
  9.0.100-preview.4.24260.3 [/usr/local/share/dotnet/sdk]
  9.0.100-preview.4.24267.66 [/usr/local/share/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 7.0.14 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 8.0.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 8.0.2 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 8.0.3 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 8.0.6 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 9.0.0-preview.3.24151.1 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 9.0.0-preview.4.24260.3 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 9.0.0-preview.4.24267.6 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 7.0.14 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 8.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 8.0.2 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 8.0.3 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 8.0.6 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 9.0.0-preview.3.24129.2 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 9.0.0-preview.4.24260.3 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 9.0.0-preview.4.24266.19 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

Other architectures found:
  None

Environment variables:
  Not set

global.json file:
  /Users/rolf/test/dotnet/2034162/testcase/global.json

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

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

Other information

Using a different assembly name works fine:

$ rm -rf bin obj
$ dotnet build /p:AssemblyName=ThisWorks
$ bin/Debug/net8.0-maccatalyst/maccatalyst-*/ThisWorks.app/Contents/MacOS/ThisWorks
✅ PASSED found testcase.AppDelegate, ThisWorks, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null

The problem seems to be in assembly_name_to_aname:

Breakpoint 1: where = 工程`assembly_name_to_aname + 17 at reflection.c:1520:2, address = 0x0000000100275a61
(lldb) c
Process 5583 resuming
Process 5583 stopped
* thread #1, name = 'tid_103', queue = 'com.apple.main-thread', stop reason = breakpoint 1.1
    frame #0: 0x0000000100275a61 工程`assembly_name_to_aname(assembly=0x000000030476b1a0, p="工程, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null") at reflection.c:1520:2 [opt]
Target 0: (工程) stopped.
(lldb) finish
Process 5583 stopped
* thread #1, name = 'tid_103', queue = 'com.apple.main-thread', stop reason = step out
Return value: (int) $0 = 1

    frame #0: 0x00000001002741e0 工程`_mono_reflection_parse_type(name=<unavailable>, endptr=0x0000000000000000, is_recursed=0, info=0x000000030476b190) at reflection.c:1847:9 [opt]
Target 0: (工程) stopped.
(lldb) p *(MonoAssemblyName *) 0x000000030476b1a0
(MonoAssemblyName) {
  name = 0x00006000001a5336 "工程, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"
  culture = 0x00000001003e7608 ""
  hash_value = 0x0000000000000000
  public_key = 0x0000000000000000
  public_key_token = ""
  hash_alg = 0
  hash_len = 0
  flags = 0
  major = 0
  minor = 0
  build = 0
  revision = 0
  arch = 0
  without_version = '\x01'
  without_culture = '\x01'
  without_public_key_token = '\x01'
}

I believe the returned MonoAssemblyName should be:

(MonoAssemblyName) {
  name = 0x00006000001a5336 "工程"
  culture = 0x00000001003e7608 ""
  hash_value = 0x0000000000000000
  public_key = 0x0000000000000000
  public_key_token = ""
  hash_alg = 0
  hash_len = 0
  flags = 0
  major = 1
  minor = 0
  build = 0
  revision = 0
  arch = 0
  without_version = '\0'
  without_culture = '\0'
  without_public_key_token = '\0'
}

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