From: Richard Biener <rguenther@suse.de>
To: gcc-patches@gcc.gnu.org
Subject: [PATCH] uninit testcase for PR65244
Date: Wed, 31 Aug 2022 11:07:19 +0200 (CEST) [thread overview]
Message-ID: <20220831090719.8CBA61332D@imap2.suse-dmz.suse.de> (raw)
The PR65244 has an issue with code in init_from_control_deps
for which there's no direct testcase. The following adds one.
Pushed.
PR tree-optimization/65244
* gcc.dg/uninit-pr65244-1.c: New testcase.
---
gcc/testsuite/gcc.dg/uninit-pr65244-1.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
create mode 100644 gcc/testsuite/gcc.dg/uninit-pr65244-1.c
diff --git a/gcc/testsuite/gcc.dg/uninit-pr65244-1.c b/gcc/testsuite/gcc.dg/uninit-pr65244-1.c
new file mode 100644
index 00000000000..7c1d910d546
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/uninit-pr65244-1.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O -Wuninitialized" } */
+
+extern void __attribute__((noreturn)) abort (void);
+
+int foo (int flag, int val)
+{
+ int tem;
+ if (flag)
+ {
+ if (val == 0)
+ abort ();
+ tem = val;
+ }
+ /* large - prevent jump threading */
+ __asm__ volatile ("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
+ if (flag)
+ return tem; /* { dg-bogus "uninitialized" } */
+ return 0;
+}
--
2.35.3
reply other threads:[~2022-08-31 9:07 UTC|newest]
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