From 1a7ee21aec68719df281300d77480eab4219e47a Mon Sep 17 00:00:00 2001
From: gnzlbg <gonzalobg88@gmail.com>
Date: Wed, 15 May 2019 16:44:07 +0200
Subject: [PATCH] Define DEPRECATED_SCANF macro to use older
scanf,sscanf,fscanf symbols
---
libc-test/build.rs | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libc-test/build.rs b/libc-test/build.rs
index 25eb8e1f..e4cf8eb6 100644
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -2257,6 +2257,10 @@ fn test_linux(target: &str) {
let mut cfg = ctest::TestGenerator::new();
// FIXME: still necessary?
cfg.define("_GNU_SOURCE", None);
+ // This macro re-deifnes fscanf,scanf,sscanf to link to the symbols that are
+ // deprecated since glibc >= 2.29. This allows Rust binaries to link against
+ // glibc versions older than 2.29.
+ cfg.define("DEPRECATED_SCANF", None);
// FIXME: still necessary?
cfg.flag("-Wno-deprecated-declarations");
--
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