From e96c792840bcff583cbb85f553f0563e741b7ab2 Mon Sep 17 00:00:00 2001
From: Hood Chatham <roberthoodchatham@gmail.com>
Date: Tue, 14 Jul 2026 14:41:33 +0200
Subject: [PATCH] gh-153313: Workaround for string decoding regression in emcc
 6.0.2

Upstream issue:
https://github.com/emscripten-core/emscripten/issues/27241
---
 configure    | 1 +
 configure.ac | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/configure b/configure
index c15bc2867b94d7d..c8494891087d045 100755
--- a/configure
+++ b/configure
@@ -9802,6 +9802,7 @@ fi
     as_fn_append LINKFORSHARED " -sEXPORTED_FUNCTIONS=_main,_Py_Version,__PyRuntime,_PyGILState_GetThisThreadState,__PyEM_EMSCRIPTEN_TRAMPOLINE_OFFSET"
     as_fn_append LINKFORSHARED " -sSTACK_SIZE=5MB"
         as_fn_append LINKFORSHARED " -sTEXTDECODER=2"
+        as_fn_append LINKFORSHARED " -sGROWABLE_ARRAYBUFFERS=0"
 
     if test "x$enable_wasm_dynamic_linking" = xyes
 then :
diff --git a/configure.ac b/configure.ac
index 2726a835efc5449..ad8280349466e06 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2410,6 +2410,8 @@ AS_CASE([$ac_sys_system],
     AS_VAR_APPEND([LINKFORSHARED], [" -sSTACK_SIZE=5MB"])
     dnl Avoid bugs in JS fallback string decoding path
     AS_VAR_APPEND([LINKFORSHARED], [" -sTEXTDECODER=2"])
+    dnl workaround for emscripten#27241, can remove when we update to emscripten 6.0.3
+    AS_VAR_APPEND([LINKFORSHARED], [" -sGROWABLE_ARRAYBUFFERS=0"])
 
     AS_VAR_IF([enable_wasm_dynamic_linking], [yes], [
       AS_VAR_APPEND([LINKFORSHARED], [" -sMAIN_MODULE"])