diff gcc/testsuite/gcc.dg/c99-array-lval-8.c @ 111:04ced10e8804

gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/c99-array-lval-8.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,30 @@
+/* Test for non-lvalue arrays: test that qualifiers on non-lvalues
+   containing arrays do not remain when those arrays decay to
+   pointers.  PR 35235.  */
+/* { dg-do compile } */
+/* { dg-options "-std=iso9899:1999 -pedantic-errors" } */
+
+int a;
+
+void
+f (void)
+{
+  const struct {
+    int a[1];
+  } s;
+  int *p1 = s.a; /* { dg-error "qualifier" } */
+  int *p2 = (a ? s : s).a;
+  /* In this case, the qualifier is properly on the array element type
+     not on the rvalue structure and so is not discarded.  */
+  struct {
+    const int a[1];
+  } t;
+  int *p3 = t.a; /* { dg-error "qualifier" } */
+  int *p4 = (a ? t : t).a; /* { dg-error "qualifier" } */
+  /* The issue could also lead to code being wrongly accepted.  */
+  const struct {
+    int a[1][1];
+  } u;
+  const int (*p5)[1] = u.a;
+  const int (*p6)[1] = (a ? u : u).a; /* { dg-error "pointer" } */
+}