Update.

[bison.git] / tests / regression.at

diff --git a/tests/regression.at b/tests/regression.at
index 68f02adc99b4451f39e9b769e5d71338c6e109e7..d8788f8824def7d63e014a32f8b92cbde438b27f 100644 (file)
--- a/tests/regression.at
+++ b/tests/regression.at
@@ -63,12 +63,14 @@ AT_CHECK([bison input.y -o input.c -v], 0, [],
 AT_CHECK([cat input.output], [],
 [[State 4 contains 1 shift/reduce conflict.
 
+
 Grammar
 
   Number, Line, Rule
     1   3 exp -> exp OP exp
     2   3 exp -> NUM
 
+
 Terminals, with rules where they appear
 
 $ (-1)
@@ -76,6 +78,7 @@ error (256)
 NUM (257) 2
 OP (258) 1
 
+
 Nonterminals, with rules where they appear
 
 exp (5)
@@ -138,6 +141,8 @@ state 5
 state 6
 
     $default   accept
+
+
 ]])
 
 AT_CLEANUP
@@ -162,12 +167,14 @@ AT_CHECK([bison input.y -o input.c -v], 0, [], [])
 AT_CHECK([cat input.output], [],
 [[Conflict in state 4 between rule 1 and token OP resolved as shift.
 
+
 Grammar
 
   Number, Line, Rule
     1   4 exp -> exp OP exp
     2   4 exp -> NUM
 
+
 Terminals, with rules where they appear
 
 $ (-1)
@@ -175,6 +182,7 @@ error (256)
 NUM (257) 2
 OP (258) 1
 
+
 Nonterminals, with rules where they appear
 
 exp (5)
@@ -236,6 +244,147 @@ state 5
 state 6
 
     $default   accept
+
+
+]])
+
+AT_CLEANUP
+
+
+
+
+## ------------------- ##
+## Rule Line Numbers.  ##
+## ------------------- ##
+
+AT_SETUP([Rule Line Numbers])
+
+AT_DATA([input.y],
+[[%%
+expr:
+'a'
+
+{
+
+}
+
+'b'
+
+{
+
+}
+
+|
+
+
+{
+
+
+}
+
+'c'
+
+{
+
+}
+]])
+
+AT_CHECK([bison input.y -o input.c -v], 0, [], [])
+
+# Check the contents of the report.
+AT_CHECK([cat input.output], [],
+[[Grammar
+
+  Number, Line, Rule
+    1   2 @1 -> /* empty */
+    2   2 expr -> 'a' @1 'b'
+    3  15 @2 -> /* empty */
+    4  15 expr -> @2 'c'
+
+
+Terminals, with rules where they appear
+
+$ (-1)
+'a' (97) 2
+'b' (98) 2
+'c' (99) 4
+error (256)
+
+
+Nonterminals, with rules where they appear
+
+expr (6)
+    on left: 2 4
+@1 (7)
+    on left: 1, on right: 2
+@2 (8)
+    on left: 3, on right: 4
+
+
+state 0
+
+    'a'        shift, and go to state 1
+
+    $default   reduce using rule 3 (@2)
+
+    expr       go to state 6
+    @2         go to state 2
+
+
+
+state 1
+
+    expr  ->  'a' . @1 'b'   (rule 2)
+
+    $default   reduce using rule 1 (@1)
+
+    @1         go to state 3
+
+
+
+state 2
+
+    expr  ->  @2 . 'c'   (rule 4)
+
+    'c'        shift, and go to state 4
+
+
+
+state 3
+
+    expr  ->  'a' @1 . 'b'   (rule 2)
+
+    'b'        shift, and go to state 5
+
+
+
+state 4
+
+    expr  ->  @2 'c' .   (rule 4)
+
+    $default   reduce using rule 4 (expr)
+
+
+
+state 5
+
+    expr  ->  'a' @1 'b' .   (rule 2)
+
+    $default   reduce using rule 2 (expr)
+
+
+
+state 6
+
+    $          go to state 7
+
+
+
+state 7
+
+    $default   accept
+
+
 ]])
 
 AT_CLEANUP
@@ -456,3 +605,78 @@ AT_CLEANUP
 
 AT_TEST_CPP_GUARD_H([input/input])
 AT_TEST_CPP_GUARD_H([9foo])
+
+
+## ---------------- ##
+## Broken Closure.  ##
+## ---------------- ##
+
+# TC was once broken during a massive `simplification' of the code.
+# It resulted in bison dumping core on the following grammar (the
+# computation of FIRSTS uses TC).  It managed to produce a pretty
+# exotic closure:
+#
+# TC: Input
+#
+#    01234567
+#   +--------+
+#  0| 1      |
+#  1|  1     |
+#  2|   1    |
+#  3|    1   |
+#  4|     1  |
+#  5|      1 |
+#  6|       1|
+#  7|        |
+#   +--------+
+#
+# TC: Output
+#
+#    01234567
+#   +--------+
+#  0| 1      |
+#  1| 111    |
+#  2| 111    |
+#  3| 1111   |
+#  4| 111 1  |
+#  5| 111  1 |
+#  6| 111   1|
+#  7| 111    |
+#   +--------+
+#
+# instead of that below.
+
+AT_SETUP([Broken Closure])
+
+AT_DATA([input.y],
+[[%%
+a: b
+b: c
+c: d
+d: e
+e: f
+f: g
+g: h
+h: 'h'
+]])
+
+AT_CHECK([bison --trace input.y 2>&1 |
+          sed -n '/^TC: Output BEGIN/,/^TC: Output END/p'],
+         [0],
+[[TC: Output BEGIN
+           @&t@
+   01234567
+  +--------+
+ 0| 1111111|
+ 1|  111111|
+ 2|   11111|
+ 3|    1111|
+ 4|     111|
+ 5|      11|
+ 6|       1|
+ 7|        |
+  +--------+
+TC: Output END
+]])
+
+AT_CLEANUP