tests: Fix some memory leaks in testcases.

Make sure all structures allocated in the testcases are disposed so
running them under valgrind will show no memory leaks.

Signed-off-by: Mark Wielaard <mjw@redhat.com>

tests/ChangeLog

@@ -1,3 +1,15 @@
+2015-12-01  Mark Wielaard  <mjw@redhat.com>
+
+	* test-flag-nobits.c (main): Call elf_end.
+	* rerequest_tag.c (main): Call dwarf_end.
+	* funcscopes.c (handle_function): Free scopes.
+	* dwarf-getstring.c (main): Call dwarf_end.
+	* allregs.c (main): Free state.info.
+	* alldts.c (main): Free dyn.
+	* addrcfi.c (handle_address): Free stuff.frame between handle_cfi
+	calls.
+	* addrscopes.c (handle_address): Free scopes.
+
 2015-10-16  Mark Wielaard  <mjw@redhat.com>
 
 	* Makefile.am [BUILD_STATIC] (libdw): Add -lz.

tests/addrcfi.c

@@ -160,10 +160,19 @@ handle_address (GElf_Addr pc, Dwfl *dwfl)
   Dwfl_Module *mod = dwfl_addrmodule (dwfl, pc);
 
   struct stuff stuff;
-  return (handle_cfi (dwfl, ".eh_frame",
-		      dwfl_module_eh_cfi (mod, &stuff.bias), pc, &stuff)
-	  & handle_cfi (dwfl, ".debug_frame",
-			dwfl_module_dwarf_cfi (mod, &stuff.bias), pc, &stuff));
+  stuff.frame = NULL;
+  stuff.bias = 0;
+  int res = handle_cfi (dwfl, ".eh_frame",
+			dwfl_module_eh_cfi (mod, &stuff.bias), pc, &stuff);
+  free (stuff.frame);
+
+  stuff.frame = NULL;
+  stuff.bias = 0;
+  res &= handle_cfi (dwfl, ".debug_frame",
+		     dwfl_module_dwarf_cfi (mod, &stuff.bias), pc, &stuff);
+  free (stuff.frame);
+
+  return res;
 }
 
 int

tests/addrscopes.c

@@ -134,6 +134,7 @@ handle_address (GElf_Addr pc, Dwfl *dwfl)
 
 	  print_vars (indent + INDENT, die);
 	}
+      free (scopes);
     }
 }
 

tests/alldts.c

@@ -256,6 +256,9 @@ main (void)
   /* And the data allocated in the .shstrtab section.  */
   free (data->d_buf);
 
+  /* And the dynamic entries.  */
+  free (dyn);
+
   /* All done.  */
   if (elf_end (elf) != 0)
     {

tests/allregs.c

@@ -184,6 +184,7 @@ main (int argc, char **argv)
 		    dwarf_encoding_string (state.info[i].type),
 		    state.info[i].bits);
 	  }
+      free (state.info);
     }
   else
     do

tests/dwarf-getstring.c

@@ -70,6 +70,7 @@ main (int argc, char *argv[])
 	  offset += len + 1;
 	}
 
+      dwarf_end (dbg);
       close (fd);
     }
 

tests/funcscopes.c

@@ -162,6 +162,7 @@ handle_function (Dwarf_Die *funcdie, void *arg)
 
 	  print_vars (indent + INDENT, die);
 	}
+      free (scopes);
     }
 
   return 0;

tests/rerequest_tag.c

@@ -42,5 +42,6 @@ main (int argc, char **argv)
   assert (die == &die_mem);
   assert (dwarf_tag (die) == 0);
 
+  dwarf_end (dw);
   return 0;
 }

tests/test-flag-nobits.c

@@ -36,4 +36,7 @@ main (int argc, char **argv)
   Elf_Scn *scn = NULL;
   while ((scn = elf_nextscn (stripped, scn)) != NULL)
     elf_flagdata (elf_getdata (scn, NULL), ELF_C_SET, ELF_F_DIRTY);
+
+  elf_end (stripped);
+  return 0;
 }