[ubsan] Stop cast-overflow.cpp test leaking undefined behaviour into the exit code.

dsandersllvm · dsandersllvm · commit 7ea4cfcf8343 · 2015-04-22T16:14:01.000Z
Summary: ubsan was correctly catching the undefined behaviour but lit's shell was failing the test anyway because the exit code was non-zero as a result of the undefined behaviour. This fixes the test on a mips-linux-gnu target. Reviewers: samsonov Reviewed By: samsonov Subscribers: samsonov, llvm-commits, rsmith, sagar Differential Revision: http://reviews.llvm.org/D9155 llvm-svn: 235518
diff --git a/compiler-rt/test/ubsan/TestCases/Float/cast-overflow.cpp b/compiler-rt/test/ubsan/TestCases/Float/cast-overflow.cpp
@@ -87,9 +87,11 @@ int main(int argc, char **argv) {
     static int test_int = MaxFloatRepresentableAsInt + 0x80;
     return 0;
     }
-  case '1':
+  case '1': {
     // CHECK-1: runtime error: value -2.14748{{.*}} is outside the range of representable values of type 'int'
-    return MinFloatRepresentableAsInt - 0x100;
+    static int test_int = MinFloatRepresentableAsInt - 0x100;
+    return 0;
+  }
   case '2': {
     // CHECK-2: runtime error: value -1 is outside the range of representable values of type 'unsigned int'
     volatile float f = -1.0;
@@ -107,9 +109,11 @@ int main(int argc, char **argv) {
     static int test_int = Inf;
     return 0;
   }
-  case '5':
+  case '5': {
     // CHECK-5: runtime error: value {{.*}} is outside the range of representable values of type 'int'
-    return NaN;
+    static int test_int = NaN;
+    return 0;
+  }
 
     // Integer -> floating point overflow.
   case '6': {
