From fe11b5492705084d8c1cefcd7a5869a59acf54ac Mon Sep 17 00:00:00 2001
From: Jeff Law <law@redhat.com>
Date: Jan 17 2020 18:39:40 +0000
Subject: - Fix autoconf generated configure tests that are compromised

  by LTO.

---

diff --git a/configure.patch b/configure.patch
new file mode 100644
index 0000000..bbb4ce4
--- /dev/null
+++ b/configure.patch
@@ -0,0 +1,32 @@
+diff -Nrup a/configure b/configure
+--- a/configure	2019-08-24 19:04:36.000000000 -0600
++++ b/configure	2019-12-19 14:22:22.305194031 -0700
+@@ -14479,7 +14479,7 @@ nocrash_init (void)
+ 
+        float x = (float)1.2;
+         float y = (float)1.3;
+-        float fun () { return x*y; }
++        __attribute__ ((noinline,noclone) float fun () { return x*y; }
+         int main()
+         { nocrash_init();
+          {int val = (* (int (*) ()) fun) ();
+@@ -15364,7 +15364,7 @@ fi
+ 
+          mprotect_prog="$mprotect_prog"'
+            char* area = (char*) malloc(6*pagesize);
+-           char* fault_address = area + pagesize*7/2;
++           volatile char* fault_address = area + pagesize*7/2;
+          '
+          if test -z "$no_mprotect"; then
+            if test "$cross_compiling" = yes; then :
+@@ -16534,8 +16534,8 @@ else
+                         {
+                           unsigned int pagesize = getpagesize ();
+                           int fd;
+-                          char *pw;
+-                          char *px;
++                          volatile char *pw;
++                          volatile char *px;
+                           fd = open ("$filename", O_CREAT | O_RDWR | O_TRUNC, 0700);
+                           if (fd < 0)
+                             return 1;
diff --git a/ffcall.spec b/ffcall.spec
index 348bd08..b2dea8a 100644
--- a/ffcall.spec
+++ b/ffcall.spec
@@ -1,11 +1,12 @@
 Name:           ffcall
 Version:        2.2
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Libraries for foreign function call interfaces
 
 License:        GPLv2+
 URL:            http://www.gnu.org/software/libffcall/
 Source0:        https://ftp.gnu.org/gnu/libffcall/lib%{name}-%{version}.tar.gz
+Patch0:         configure.patch
 
 BuildRequires:  gcc
 BuildRequires:  gnulib-devel
@@ -37,6 +38,7 @@ Static libraries for foreign function call interfaces.
 
 %prep
 %setup -q -n lib%{name}-%{version}
+%patch0 -p1
 
 %build
 %configure CFLAGS="%{optflags} -fno-strict-aliasing"
@@ -90,6 +92,10 @@ popd
 
 
 %changelog
+* Fri Jan 17 2020 Jeff Law <law@redhat.com> - 2.2-2
+- Fix autoconf generated configure tests that are compromised
+  by LTO.
+
 * Mon Aug 26 2019 Jerry James <loganjerry@gmail.com> - 2.2-1
 - New upstream release