Fix memory leak in selftest::test_expansion_to_rtl

"make selftest-valgrind" shows:

187 bytes in 1 blocks are definitely lost in loss record 567 of 669
    at 0x4A081D4: calloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
    by 0x1F08260: xcalloc (xmalloc.c:162)
    by 0xB24F32: init_emit() (emit-rtl.c:5843)
    by 0xC10080: prepare_function_start() (function.c:4803)
    by 0xC10254: init_function_start(tree_node*) (function.c:4877)
    by 0x1CDF92A: selftest::test_expansion_to_rtl() (function-tests.c:595)
    by 0x1CE007C: selftest::function_tests_c_tests() (function-tests.c:676)
    by 0x1E010E7: selftest::run_tests() (selftest-run-tests.c:98)
    by 0x1062D1E: toplev::run_self_tests() (toplev.c:2225)
    by 0x1062F40: toplev::main(int, char**) (toplev.c:2303)
    by 0x1E5B90A: main (main.c:39)

The allocation in question is:

  crtl->emit.regno_pointer_align
    = XCNEWVEC (unsigned char, crtl->emit.regno_pointer_align_length);

This patch fixes this leak (and makes the output of
"make selftest-valgrind" clean) by calling free_after_compilation at the
end of the selftest in question.

gcc/ChangeLog:
	* function-tests.c (selftest::test_expansion_to_rtl): Call
	free_after_compilation.

From-SVN: r263339

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 05bd803a93458679ef4e8ae7109bf63ff586ce8a..b9a59d9e6b4b67fccc0d08424e858e13c27a550f 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2018-08-06  David Malcolm  <dmalcolm@redhat.com>
+
+       * function-tests.c (selftest::test_expansion_to_rtl): Call
+       free_after_compilation.
+
 2018-08-06  Alan Hayward  <alan.hayward@arm.com>
 
        * config/aarch64/aarch64.md: Add clobber highs to tls_desc.

diff --git a/gcc/function-tests.c b/gcc/function-tests.c
index 1b5ebf3183531296a618d123e23ba0838c3181bf..196b3a3828e14a31c4246ec24fb650ccad5979f0 100644 (file)
--- a/gcc/function-tests.c
+++ b/gcc/function-tests.c
@@ -661,6 +661,7 @@ test_expansion_to_rtl ()
   ASSERT_STR_CONTAINS (dump, ") ;; function \"test_fn\"\n");
 
   free (dump);
+  free_after_compilation (fun);
 }
 
 /* Run all of the selftests within this file.  */