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+/*
+Date: 22 Dec 87 08:38:59 PST (Tuesday)
+Subject: Serious bug in gcc 1.16
+From: "James_L_Mayer.WBST128"@xerox.com
+To: bug-gcc@prep.ai.mit.edu
+Message-Id: <871222-084137-7045@Xerox>
+
+Here is a bug in release 1.16 of gcc running on a Sun3:
+
+Problem:
+	In assembler output, "pointer" is incremented twice for each iteration.
+	(when compiled optimized.)
+*/
+
+struct bits
+{
+	unsigned bit0: 1;
+	unsigned bit1: 1;
+} foo[2];
+
+alpha(pointer, count)
+	struct bits *pointer;
+	int count;
+{
+	while (--count >= 0)
+	{
+		pointer->bit0 = !pointer->bit0;
+		pointer++;
+	}
+	
+	if (pointer == &foo[2])
+		printf("Test passed\n");
+	else
+		printf("FAILED, pointer=%x, &foo[2]=%x\n", pointer, &foo[2]);
+}
+
+main()
+{
+	alpha(foo, 2);
+	return 0;
+}