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https://github.com/libffi/libffi/issues/760
https://github.com/libffi/libffi/commit/ce077e5565366171aa1b4438749b0922fce887a4
From ce077e5565366171aa1b4438749b0922fce887a4 Mon Sep 17 00:00:00 2001
From: serge-sans-paille <serge.guelton@telecom-bretagne.eu>
Date: Thu, 2 Feb 2023 14:46:29 +0000
Subject: [PATCH] Forward declare open_temp_exec_file (#764)
It's defined in closures.c and used in tramp.c.
Also declare it as an hidden symbol, as it should be.
Co-authored-by: serge-sans-paille <sguelton@mozilla.com>
--- a/include/ffi_common.h
+++ b/include/ffi_common.h
@@ -128,6 +128,10 @@ void *ffi_data_to_code_pointer (void *data) FFI_HIDDEN;
static trampoline. */
int ffi_tramp_is_present (void *closure) FFI_HIDDEN;
+/* Return a file descriptor of a temporary zero-sized file in a
+ writable and executable filesystem. */
+int open_temp_exec_file(void) FFI_HIDDEN;
+
/* Extended cif, used in callback from assembly routine */
typedef struct
{
--- a/src/tramp.c
+++ b/src/tramp.c
@@ -39,6 +39,10 @@
#ifdef __linux__
#define _GNU_SOURCE 1
#endif
+
+#include <ffi.h>
+#include <ffi_common.h>
+
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
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