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From: Martin Sebor <msebor@gcc.gnu.org>
To: gcc-cvs@gcc.gnu.org
Subject: [gcc r11-8161] PR middle-end/86058 - TARGET_MEM_REF causing incorrect
 message for -Wmaybe-uninitialized warning
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https://gcc.gnu.org/g:8084ab15a3e300e3b2c537e56e0f3a1b00778aec

commit r11-8161-g8084ab15a3e300e3b2c537e56e0f3a1b00778aec
Author: Martin Sebor <msebor@redhat.com>
Date:   Tue Apr 13 13:46:21 2021 -0600

    PR middle-end/86058 - TARGET_MEM_REF causing incorrect message for -Wmaybe-uninitialized warning
    
    gcc/testsuite/ChangeLog:
            PR middle-end/86058
            * gcc.dg/pr86058.c: New test.

Diff:
---
 gcc/testsuite/gcc.dg/pr86058.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/gcc/testsuite/gcc.dg/pr86058.c b/gcc/testsuite/gcc.dg/pr86058.c
new file mode 100644
index 00000000000..0b030b04acf
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr86058.c
@@ -0,0 +1,18 @@
+/* PR middle-end/86058 - TARGET_MEM_REF causing incorrect message for
+   -Wmaybe-uninitialized warning
+   { dg-do compile } 
+   { dg-options "-O2 -Wuninitialized -Wmaybe-uninitialized" } */
+    
+extern void foo (int *);
+
+void zip (int *out, int indx)
+{
+  int arr[10];
+
+  for (int i = 0; i < indx; ++i)
+    out[i] = arr[i] + 1;  // { dg-warning "'arr\\\[i]' may be used uninitialized" "pr?????" { xfail *-*-* } }
+                          // { dg-warning "'arr' may be used uninitialized" "actual" { target *-*-* } .-1 }
+  
+  foo (arr);
+  foo (out);
+}