re PR middle-end/42049 (ICE with -O2 - internal compiler error: in…

re PR middle-end/42049 (ICE with -O2 - internal compiler error: in expand_expr_real_1, at expr.c:9314)

	PR middle-end/42049
	* builtins.c (expand_builtin_strcpy_args): Handle COMPOUND_EXPRs
	potentially returned from folding strcpy.

	* gcc.c-torture/compile/pr42049.c: New test.

From-SVN: r154952

gcc/testsuite/ChangeLog

+2009-12-03  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/42049
+	* gcc.c-torture/compile/pr42049.c: New test.
+
 2009-12-03  Quentin Ochem  <ochem@adacore.com>
 
 	* gnat.dg/controlled5.adb: New test.

gcc/testsuite/gcc.c-torture/compile/pr42049.c

+/* PR middle-end/42049 */
+
+extern char *strcpy (char *s1, const char *s2);
+struct S { char s[4]; };
+
+int
+foo (int x, char **y)
+{
+  char const *a;
+  char const *b;
+  struct S s[9];
+  long i;
+  if (x > 1)
+    a = y[1];
+  else
+    a = "abc";
+  if (x > 2)
+    b = y[2];
+  else
+    b = "def";
+  strcpy (s[0].s, a);
+  strcpy (s[1].s, b);
+  for (i = 2; i < x - 2 && i < 8; i++)
+    strcpy (s[i].s, y[i + 1]);
+  s[i].s[0] = '\0';
+  return 0;
+}