[pulse] Add a new test for npe in objc blocks

Summary: The title

Reviewed By: jvillard

Differential Revision: D23239657

fbshipit-source-id: 48278b82c

infer/tests/codetoanalyze/objc/pulse/NPEBlocks.m

@@ -34,3 +34,12 @@ int captured_npe_bad() {
   };
   return my_block();
 }
+
+int captured_npe_ok_FP(int* y) {
+  __block int* x = NULL;
+  void (^my_block)(void) = ^() {
+    x = y;
+  };
+  my_block();
+  return *x;
+}

infer/tests/codetoanalyze/objc/pulse/issues.exp

@@ -9,5 +9,6 @@ codetoanalyze/objc/pulse/MemoryLeaks.m, call_cfrelease_interproc_leak_ok_FP, 2,
 codetoanalyze/objc/pulse/MemoryLeaksInBlocks.m, block_captured_var_leak_bad, 6, MEMORY_LEAK, no_bucket, ERROR, [allocation part of the trace starts here,allocated by call to `malloc_no_fail` (modelled),allocation part of the trace ends here,memory becomes unreachable here]
 codetoanalyze/objc/pulse/NPEBlocks.m, Singleton.dispatch_once_no_npe_good_FP, 6, NULLPTR_DEREFERENCE, no_bucket, ERROR, [invalidation part of the trace starts here,assigned,is the null pointer,use-after-lifetime part of the trace starts here,assigned,invalid access occurs here]
 codetoanalyze/objc/pulse/NPEBlocks.m, captured_npe_bad, 5, NULLPTR_DEREFERENCE, no_bucket, ERROR, [invalidation part of the trace starts here,assigned,is the null pointer,use-after-lifetime part of the trace starts here,assigned,when calling `objc_blockcaptured_npe_bad_2` here,parameter `x` of objc_blockcaptured_npe_bad_2,invalid access occurs here]
+codetoanalyze/objc/pulse/NPEBlocks.m, captured_npe_ok_FP, 6, NULLPTR_DEREFERENCE, no_bucket, ERROR, [invalidation part of the trace starts here,assigned,is the null pointer,use-after-lifetime part of the trace starts here,assigned,invalid access occurs here]
 codetoanalyze/objc/pulse/use_after_free.m, PulseTest.use_after_free_simple_in_objc_method_bad:, 2, USE_AFTER_FREE, no_bucket, ERROR, [invalidation part of the trace starts here,parameter `x` of PulseTest.use_after_free_simple_in_objc_method_bad:,was invalidated by call to `free()`,use-after-lifetime part of the trace starts here,parameter `x` of PulseTest.use_after_free_simple_in_objc_method_bad:,invalid access occurs here]
 codetoanalyze/objc/pulse/use_after_free.m, use_after_free_simple_bad, 2, USE_AFTER_FREE, no_bucket, ERROR, [invalidation part of the trace starts here,parameter `x` of use_after_free_simple_bad,was invalidated by call to `free()`,use-after-lifetime part of the trace starts here,parameter `x` of use_after_free_simple_bad,invalid access occurs here]