Merge #2943

2943: Fix build error on some archs by using c_char instead of i8 r=epilys a=silwol

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# Description
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# Review

- [x] Add a short description of the change to the CHANGELOG.md file


Co-authored-by: Wolfgang Silbermayr <[email protected]>

CHANGELOG.md

@@ -10,6 +10,7 @@ Looking for changes that affect our C API? See the [C API Changelog](lib/c-api/C
 
 ### Fixed
 - [#2942](https://github.com/wasmerio/wasmer/pull/2942) Fix clippy lints.
+- [#2943](https://github.com/wasmerio/wasmer/pull/2943) Fix build error on some archs by using c_char instead of i8
 
 ## 2.3.0 - 2022/06/06
 

lib/emscripten/src/exec.rs

@@ -1,5 +1,6 @@
 use crate::varargs::VarArgs;
 use crate::EmEnv;
+use libc::c_char;
 use libc::execvp as libc_execvp;
 use std::ffi::CString;
 use wasmer::WasmPtr;
@@ -27,7 +28,7 @@ pub fn execvp(ctx: &EmEnv, command_name_offset: u32, argv_offset: u32) -> i32 {
             CString::new(vec).unwrap()
         })
         .collect();
-    let mut argv: Vec<*const i8> = arg_strings.iter().map(|s| s.as_ptr()).collect();
+    let mut argv: Vec<*const c_char> = arg_strings.iter().map(|s| s.as_ptr()).collect();
 
     // push a nullptr on to the end of the args array
     argv.push(std::ptr::null());