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      1 // RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-output=text -verify %s
      2 // RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-output=text -analyzer-config prune-paths=false -DNPRUNE=1 -verify %s
      3 
      4 // "prune-paths" is a debug option only; this is just a simple test to see that
      5 // it's being honored.
      6 
      7 void helper() {
      8   extern void foo();
      9   foo();
     10 }
     11 
     12 void test() {
     13   helper();
     14 #if NPRUNE
     15   // expected-note@-2 {{Calling 'helper'}}
     16   // expected-note@-3 {{Returning from 'helper'}}
     17 #endif
     18 
     19   *(volatile int *)0 = 1; // expected-warning {{Dereference of null pointer}}
     20   // expected-note@-1 {{Dereference of null pointer}}
     21 }
     22