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Sanopt: ignore params with DECL_HAS_VALUE_EXPR_P (PR sanitizer/86962).

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2018-08-27  Martin Liska  <mliska@suse.cz>

        PR sanitizer/86962
	* sanopt.c (sanitize_rewrite_addressable_params): Ignore
        params with DECL_HAS_VALUE_EXPR_P.
2018-08-27  Martin Liska  <mliska@suse.cz>

        PR sanitizer/86962
	* gcc.dg/asan/pr86962.c: New test.

From-SVN: r263882
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Martin Liska 2018-08-27 15:21:28 +02:00 committed by Martin Liska
parent 6b60ee204f
commit 47c3496bf8
4 changed files with 28 additions and 2 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2018-08-27 Martin Liska <mliska@suse.cz>
PR sanitizer/86962
* sanopt.c (sanitize_rewrite_addressable_params): Ignore
params with DECL_HAS_VALUE_EXPR_P.
2018-08-27 Martin Liska <mliska@suse.cz>
* config/i386/i386.c (ix86_expand_set_or_movmem): Dump

6
gcc/sanopt.c
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@ -1165,13 +1165,15 @@ sanitize_rewrite_addressable_params (function *fun)
gimple_add_tmp_var (var);
/* We skip parameters that have a DECL_VALUE_EXPR. */
if (DECL_HAS_VALUE_EXPR_P (arg))
continue;
if (dump_file)
fprintf (dump_file,
"Rewriting parameter whose address is taken: %s\n",
IDENTIFIER_POINTER (DECL_NAME (arg)));
gcc_assert (!DECL_HAS_VALUE_EXPR_P (arg));
SET_DECL_PT_UID (var, DECL_PT_UID (arg));
/* Assign value of parameter to newly created variable. */

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2018-08-27 Martin Liska <mliska@suse.cz>
PR sanitizer/86962
* gcc.dg/asan/pr86962.c: New test.
2018-08-27 Martin Liska <mliska@suse.cz>
* gcc.dg/tree-prof/val-prof-10.c: New test.

13
gcc/testsuite/gcc.dg/asan/pr86962.c Normal file
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@ -0,0 +1,13 @@
/* PR sanitizer/86962 */
/* { dg-do compile } */
extern int dummy (int *);
void foo(int i)
{
int j=i;
void bar() { int x=j, y=i; }
dummy(&i);
}