[pulse] added an test on memory_leak.c

Reviewed By: jvillard

Differential Revision: D28326961

fbshipit-source-id: 225deb1d8

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

@@ -9,6 +9,7 @@ codetoanalyze/c/pulse/latent.c, latent_use_after_free, 4, NULLPTR_DEREFERENCE, n
 codetoanalyze/c/pulse/latent.c, latent_use_after_free, 4, USE_AFTER_FREE, no_bucket, ERROR, [*** LATENT ***,invalidation part of the trace starts here,parameter `x` of latent_use_after_free,was invalidated by call to `free()`,use-after-lifetime part of the trace starts here,parameter `x` of latent_use_after_free,invalid access occurs here]
 codetoanalyze/c/pulse/latent.c, main, 3, USE_AFTER_FREE, no_bucket, ERROR, [calling context starts here,in call to `latent_use_after_free`,invalidation part of the trace starts here,parameter `x` of latent_use_after_free,was invalidated by call to `free()`,use-after-lifetime part of the trace starts here,parameter `x` of latent_use_after_free,invalid access occurs here]
 codetoanalyze/c/pulse/latent.c, manifest_use_after_free, 0, USE_AFTER_FREE, no_bucket, ERROR, [calling context starts here,in call to `latent_use_after_free`,invalidation part of the trace starts here,parameter `x` of latent_use_after_free,was invalidated by call to `free()`,use-after-lifetime part of the trace starts here,parameter `x` of latent_use_after_free,invalid access occurs here]
+codetoanalyze/c/pulse/memory_leak.c, alias_ptr_free_FP, 9, MEMORY_LEAK, no_bucket, ERROR, [allocation part of the trace starts here,allocated by call to `malloc` (modelled),allocation part of the trace ends here,memory becomes unreachable here]
 codetoanalyze/c/pulse/memory_leak.c, malloc_formal_leak_bad, 0, MEMORY_LEAK, no_bucket, ERROR, [allocation part of the trace starts here,allocated by call to `malloc` (modelled),allocation part of the trace ends here,memory becomes unreachable here]
 codetoanalyze/c/pulse/memory_leak.c, malloc_interproc_no_free_bad, 0, MEMORY_LEAK, no_bucket, ERROR, [allocation part of the trace starts here,when calling `create_p` here,allocated by call to `malloc` (modelled),allocation part of the trace ends here,memory becomes unreachable here]
 codetoanalyze/c/pulse/memory_leak.c, malloc_interproc_no_free_bad2, 5, MEMORY_LEAK, no_bucket, ERROR, [allocation part of the trace starts here,allocated by call to `malloc` (modelled),allocation part of the trace ends here,memory becomes unreachable here]

infer/tests/codetoanalyze/c/pulse/memory_leak.c

@@ -69,3 +69,14 @@ void malloc_ptr_free_ptr_ok() {
   int* p = (int*)malloc_via_ptr(sizeof(int));
   free_via_ptr(p);
 }
+
+void alias_ptr_free_FP(int* out, int flag) {
+  int* y;
+  if (flag) {
+    y = (int*)malloc(sizeof(int));
+  } else {
+    y = out;
+  }
+  if (y && y != out)
+    free(y);
+}