File gcc7-testsuite-fixes.patch of Package cross-s390x-gcc7.21370

diff --git a/gcc/testsuite/gcc.dg/strncmp-2.c b/gcc/testsuite/gcc.dg/strncmp-2.c
index ed6c5fa0880..db46d0af4e0 100644
--- a/gcc/testsuite/gcc.dg/strncmp-2.c
+++ b/gcc/testsuite/gcc.dg/strncmp-2.c
@@ -40,6 +40,7 @@ static void test_driver_strncmp (void (test_strncmp)(const char *, const char *,
     e = lib_memcmp(buf1,p2,sz);
     (*test_memcmp)(buf1,p2,e);
   }
+  mprotect (buf2+pgsz,pgsz,PROT_READ|PROT_WRITE);
   free(buf2);
 }
 
diff --git a/libstdc++-v3/testsuite/ext/stdio_filebuf/char/79820.cc b/libstdc++-v3/testsuite/ext/stdio_filebuf/char/79820.cc
index ba566f869c6..ca51d6d1a78 100644
--- a/libstdc++-v3/testsuite/ext/stdio_filebuf/char/79820.cc
+++ b/libstdc++-v3/testsuite/ext/stdio_filebuf/char/79820.cc
@@ -26,10 +26,12 @@ void
 test01()
 {
   FILE* f = std::fopen("79820.txt", "w");
+    {
+      errno = 127;
+      __gnu_cxx::stdio_filebuf<char> b(f, std::ios::out, BUFSIZ);
+      VERIFY(errno == 127); // PR libstdc++/79820
+    }
   std::fclose(f);
-  errno = 127;
-  __gnu_cxx::stdio_filebuf<char> b(f, std::ios::out, BUFSIZ);
-  VERIFY(errno == 127); // PR libstdc++/79820
 }
 
 int
diff --git a/gcc/testsuite/gcc.target/i386/xop-hsubX.c b/gcc/testsuite/gcc.target/i386/xop-hsubX.c
index f0fa9b312f2..dc7944d8bb7 100644
--- a/gcc/testsuite/gcc.target/i386/xop-hsubX.c
+++ b/gcc/testsuite/gcc.target/i386/xop-hsubX.c
@@ -58,6 +58,7 @@ check_sbyte2word ()
 	    check_fails++;	
 	}
     }
+  return check_fails;
 }
 
 static int
@@ -75,6 +76,7 @@ check_sword2dword ()
 	    check_fails++;	
 	}
     }
+  return check_fails;
 }
 
 static int
@@ -92,6 +94,7 @@ check_dword2qword ()
 	    check_fails++;	
 	}
     }
+  return check_fails;
 }
 
 static void