[wasm][debugger] - RuntimeError: memory access out of bounds #51276
Description
Description
When debugging method which contains StringBuilder, the Mono SDB throws memory access exception.
RuntimeError: memory access out of bounds
at describe_value (http://localhost:8004/dotnet.wasm:wasm-function[7095]:0x1c5eb7)
at describe_variable (http://localhost:8004/dotnet.wasm:wasm-function[7104]:0x1c7242)
at describe_variables_on_frame (http://localhost:8004/dotnet.wasm:wasm-function[7103]:0x1c6fd2)
at mono_walk_stack_full (http://localhost:8004/dotnet.wasm:wasm-function[6414]:0x1a3f20)
at mono_walk_stack_with_ctx (http://localhost:8004/dotnet.wasm:wasm-function[6412]:0x1a3aec)
at mono_wasm_get_local_vars (http://localhost:8004/dotnet.wasm:wasm-function[7102]:0x1c6e05)
at http://localhost:8004/dotnet.js:1431:22
at ccall (http://localhost:8004/dotnet.js:645:18)
at Object.<anonymous> (http://localhost:8004/dotnet.js:657:12)
at Object.value (http://localhost:8004/dotnet.js:7346:60)
Configuration
Steps to reproduce via small code change this branch
main...pavelsavara:wasm_debugger_crash
- build mono runtime in Debug mode
- sample code
[MethodImpl(MethodImplOptions.NoInlining)]
public static int TestMeaning()
{
return 42 + TestMeaningSB(); // place breakpoint here and then step in.
}
[MethodImpl(MethodImplOptions.NoInlining)]
public static int TestMeaningSB()
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
sb.Append('a');
return sb.Length;
}
- put breakpoint into TestMeaning() and step into TestMeaningSB()
- Look into the log of BrowserDebugHost
Regression?
Don't know.
Other information
It's actually able to kill the browser tab 'aw, snap!'
Ubuntu in WSL2, X11
Chmore version 89.0.4389.114 (Official Build) (64-bit)
Enabling browser crash dump prevents the reproduction of the crash for me.