GATE | GATE CS 2013 | Question 65

Consider the following two sets of LR(1) items of an LR(1) grammar.

X -> c.X, c/d
   X -> .cX, c/d
   X -> .d, c/d
   X -> c.X, $
   X -> .cX, $
   X -> .d, $

Which of the following statements related to merging of the two sets in the corresponding LALR parser is/are FALSE?

Cannot be merged since look aheads are different.
Can be merged but will result in S-R conflict.
Can be merged but will result in R-R conflict.
Cannot be merged since goto on c will lead to two different sets.

(A)

1 only

(B)

2 only

(C)

1 and 4 only

(D)

1, 2, 3, and 4

Answer

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