1 files changed, 6 insertions, 1 deletions
diff --git a/src/parser/parser_utils.c b/src/parser/parser_utils.c
index 96b0c17..496db9e 100644
--- a/src/parser/parser_utils.c
+++ b/src/parser/parser_utils.c
@@ -2108,10 +2108,15 @@ char *process_fstring(ParserContext *ctx, const char *content, char ***used_syms
         // Codegen expression to temporary buffer
         char *code_buffer = NULL;
         size_t code_len = 0;
-        FILE *mem_stream = open_memstream(&code_buffer, &code_len);
+        FILE *mem_stream = tmpfile();
         if (mem_stream)
         {
             codegen_expression(ctx, expr_node, mem_stream);
+            code_len = ftell(mem_stream);
+            code_buffer = xmalloc(code_len + 1);
+            fseek(mem_stream, 0, SEEK_SET);
+            fread(code_buffer, 1, code_len, mem_stream);
+            code_buffer[code_len] = 0;
             fclose(mem_stream);
         }