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revision 1.1.2.21 by akim, Mon Dec 10 08:43:38 2001 UTC revision 1.1.2.22 by akim, Thu Dec 13 10:59:37 2001 UTC
# Line 611  AT_CLEANUP Line 611  AT_CLEANUP
611    
612  AT_TEST_CPP_GUARD_H([input/input])  AT_TEST_CPP_GUARD_H([input/input])
613  AT_TEST_CPP_GUARD_H([9foo])  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  

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