diff --git a/gcc/testsuite/g++.dg/torture/pr35634.C b/gcc/testsuite/g++.dg/torture/pr35634.C
index 00848e3..1f03bb1 100644
--- a/gcc/testsuite/g++.dg/torture/pr35634.C
+++ b/gcc/testsuite/g++.dg/torture/pr35634.C
@@ -5,7 +5,7 @@ extern "C" void exit (int);
 
 void foo (int i)
 {
-    static int n;
+    static int n = 0;
     if (i < -128 || i > 127)
         abort ();
     if (++n > 1000)
@@ -14,6 +14,6 @@ void foo (int i)
 
 int main ()
 {
-    char c;
+    signed char c;
     for (c = 0; ; c++) foo (c);
 }
diff --git a/gcc/testsuite/gcc.dg/torture/pr35634.c b/gcc/testsuite/gcc.dg/torture/pr35634.c
index 32df7d4..f8876a4 100644
--- a/gcc/testsuite/gcc.dg/torture/pr35634.c
+++ b/gcc/testsuite/gcc.dg/torture/pr35634.c
@@ -5,7 +5,7 @@ void exit (int);
 
 void foo (int i)
 {
-    static int n;
+    static int n = 0;
     if (i < -128 || i > 127)
         abort ();
     if (++n > 1000)
@@ -14,6 +14,6 @@ void foo (int i)
 
 int main ()
 {
-    char c;
+    signed char c;
     for (c = 0; ; c++) foo (c);
 }