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-rw-r--r--gcc/c-family/c-warn.c3
-rw-r--r--gcc/testsuite/gcc.dg/Wvla-parameter-13.c18
2 files changed, 20 insertions, 1 deletions
diff --git a/gcc/c-family/c-warn.c b/gcc/c-family/c-warn.c
index 552a29f..84ad663 100644
--- a/gcc/c-family/c-warn.c
+++ b/gcc/c-family/c-warn.c
@@ -3275,7 +3275,8 @@ warn_parm_ptrarray_mismatch (location_t origloc, tree curparms, tree newparms)
/* Move on if the bounds look the same. */
if (!pcurbndpos && !pnewbndpos
&& curbnd && newbnd
- && operand_equal_p (curbnd, newbnd, OEP_LEXICOGRAPHIC))
+ && operand_equal_p (curbnd, newbnd,
+ OEP_DECL_NAME | OEP_LEXICOGRAPHIC))
continue;
if ((curbnd && TREE_CODE (curbnd) != INTEGER_CST)
diff --git a/gcc/testsuite/gcc.dg/Wvla-parameter-13.c b/gcc/testsuite/gcc.dg/Wvla-parameter-13.c
new file mode 100644
index 0000000..f64d29c
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/Wvla-parameter-13.c
@@ -0,0 +1,18 @@
+/* PR c/101585 - Bad interaction of -fsanitize=undefined and -Wvla-parameters
+ { dg-do compile }
+ { dg-options "-Wall -fsanitize=undefined" } */
+
+void f1 (int n, int (*)[n]);
+void f1 (int n, int (*)[n]); // { dg-bogus "\\\[-Wvla-parameter" }
+
+void g1 (int m, int (*)[m]);
+void g1 (int n, int (*)[n]); // { dg-bogus "\\\[-Wvla-parameter" "pr101605" { xfail *-*-* } }
+
+void h1 (int n, int (*)[n]);
+void h1 (int n, int (*)[n + 1]); // { dg-warning "\\\[-Wvla-parameter" }
+
+void f2 (int m, int n, int (*)[m][n]);
+void f2 (int n, int m, int (*)[n][m]); // { dg-bogus "\\\[-Wvla-parameter" "pr101605" { xfail *-*-* } }
+
+void g2 (int m, int n, int (*)[m][n]);
+void g2 (int n, int m, int (*)[m][n]); // { dg-warning "\\\[-Wvla-parameter" "pr101605" { xfail *-*-* } }