[Kleis Auke Wolthuizen (kleisauke)]

Fixes a regression introduced in commit f72b7a0.

---

That commit moved the include directives before platform selection, i.e.:

--- a/src/prim/prim.c
+++ b/src/prim/prim.c
@@ -5,6 +5,10 @@ terms of the MIT license. A copy of the license can be found in the file
 "LICENSE" at the root of this distribution.
 -----------------------------------------------------------------------------*/
 
+#include "mimalloc/heap/init.h"
+#include "mimalloc/prim.h"
+
+
 // Select the implementation of the primitives
 // depending on the OS.
 
@@ -26,9 +30,6 @@ terms of the MIT license. A copy of the license can be found in the file
 
 #endif
 
-#include "mimalloc/internal/init.h"
-#include "mimalloc/internal/prim.h"
-
 // Generic process initialization
 #if !defined(MI_PRIM_HAS_PROCESS_ATTACH)
 #if defined(__GNUC__) || defined(__clang__)

which causes mimalloc/heap/init.h to transitively include mimalloc/decl.h, which defines __wasi__ for Emscripten builds.

mimalloc/include/mimalloc/decl.h

Lines 106 to 108 in b18ab4e

	#if defined(__EMSCRIPTEN__) && !defined(__wasi__)
	#define __wasi__
	#endif

This consequently selects the WASI backend when building with Emscripten. Fix this by preferring Emscripten's implementation instead.

[Daan (daanx)]

Thank you! I will try to include emscripten in the test workflow to hopefully prevent this in the future.