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re PR tree-optimization/61773 (ICE in tree-ssa-strlen.c:417)

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PR tree-optimization/61773
	* tree-ssa-strlen.c (get_string_length): Don't assert
	stpcpy has been prototyped if si->stmt is BUILT_IN_MALLOC.

	* gcc.dg/pr61773.c: New test.

From-SVN: r217910
This commit is contained in:
Jakub Jelinek 2014-11-21 10:27:19 +01:00 • committed by Jakub Jelinek
parent aa7da51a8c
commit 1e762c6ad8
4 changed files with 24 additions and 1 deletions
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4
gcc/ChangeLog
View file

@ -1,5 +1,9 @@
2014-11-21 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/61773
* tree-ssa-strlen.c (get_string_length): Don't assert
stpcpy has been prototyped if si->stmt is BUILT_IN_MALLOC.
PR target/63910
* simplify-rtx.c (simplify_immed_subreg): Return NULL for integer
modes wider than MAX_BITSIZE_MODE_ANY_INT. If not using

3
gcc/testsuite/ChangeLog
View file

@ -1,5 +1,8 @@
2014-11-21 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/61773
* gcc.dg/pr61773.c: New test.
PR target/63764
* c-c++-common/pr63764-1.c: New test.
* c-c++-common/pr63764-2.c: New test.

16
gcc/testsuite/gcc.dg/pr61773.c Normal file
View file

@ -0,0 +1,16 @@
/* PR tree-optimization/61773 */
/* { dg-do compile } */
/* { dg-options "-O2" } */
void
foo (char **x)
{
char *p = __builtin_malloc (64);
char *q = __builtin_malloc (64);
__builtin_strcat (q, "abcde");
__builtin_strcat (p, "ab");
p[1] = q[3];
__builtin_strcat (p, q);
x[0] = p;
x[1] = q;
}

2
gcc/tree-ssa-strlen.c
View file

@ -430,7 +430,6 @@ get_string_length (strinfo si)
callee = gimple_call_fndecl (stmt);
gcc_assert (callee && DECL_BUILT_IN_CLASS (callee) == BUILT_IN_NORMAL);
lhs = gimple_call_lhs (stmt);
gcc_assert (builtin_decl_implicit_p (BUILT_IN_STPCPY));
/* unshare_strinfo is intentionally not called here. The (delayed)
transformation of strcpy or strcat into stpcpy is done at the place
of the former strcpy/strcat call and so can affect all the strinfos
@ -479,6 +478,7 @@ get_string_length (strinfo si)
case BUILT_IN_STRCPY_CHK:
case BUILT_IN_STRCPY_CHKP:
case BUILT_IN_STRCPY_CHK_CHKP:
gcc_assert (builtin_decl_implicit_p (BUILT_IN_STPCPY));
if (gimple_call_num_args (stmt) == (with_bounds ? 4 : 2))
fn = builtin_decl_implicit (BUILT_IN_STPCPY);
else