tests: use %empty

[bison.git] / tests / conflicts.at

diff --git a/tests/conflicts.at b/tests/conflicts.at
index 5325b69e2742ac143930cf6c9ed9d346e13f76e2..9f7d59f93b262552ea753dad9728953683afdb9c 100644 (file)
--- a/tests/conflicts.at
+++ b/tests/conflicts.at
@@ -17,10 +17,9 @@
 
 AT_BANNER([[Conflicts.]])
 
-
-## ------------------------ ##
-## Token declaration order. ##
-## ------------------------ ##
+## ------------------------- ##
+## Token declaration order.  ##
+## ------------------------- ##
 
 # This test checks that token are declared left to right when in a precedence
 # statement.
@@ -74,18 +73,106 @@ int main (void)
   assert (T < U);
   assert (U < V);
   assert (V < W);
+  return 0;
 }
 ]])
 
-AT_FULL_COMPILE([input])
+AT_BISON_CHECK([-o input.c input.y])
+AT_COMPILE([input])
 
-AT_CHECK([./input])
+AT_PARSER_CHECK([./input])
 
 AT_BISON_OPTION_POPDEFS
 
 AT_CLEANUP
 
 
+## ------------------------------- ##
+## Useless associativity warning.  ##
+## ------------------------------- ##
+
+AT_SETUP([Useless associativity warning])
+
+AT_DATA([[input.y]],
+[[%nonassoc "="
+%left "+"
+%left "*"
+%precedence "("
+%%
+stmt:
+  exp
+| "var" "=" exp
+;
+
+exp:
+  exp "+" exp
+| exp "*" "num"
+| "(" exp ")"
+| "num"
+;
+]])
+
+AT_BISON_CHECK([-Wprecedence input.y], 0, [],
+[[input.y:1.11-13: warning: useless precedence and associativity for "=" [-Wprecedence]
+input.y:3.7-9: warning: useless associativity for "*", use %precedence [-Wprecedence]
+input.y:4.13-15: warning: useless precedence for "(" [-Wprecedence]
+]])
+
+AT_CLEANUP
+
+
+## ---------------------------- ##
+## Useless precedence warning.  ##
+## ---------------------------- ##
+
+AT_SETUP([Useless precedence warning])
+
+AT_DATA([[input.y]],
+[[%token A B
+%precedence Z
+%left X
+%precedence Y
+%left W
+%right V
+%nonassoc U
+%%
+a: b
+ | a U b
+ | f
+;
+b: c
+ | b V c
+;
+c: d
+ | c W d
+;
+d: A
+ | d X d
+ | d Y A
+;
+f: B
+ | f Z B
+;
+]])
+
+AT_BISON_CHECK([-Wprecedence -fcaret -o input.c input.y], 0, [],
+[[input.y:2.13: warning: useless precedence for Z [-Wprecedence]
+ %precedence Z
+             ^
+input.y:5.7: warning: useless precedence and associativity for W [-Wprecedence]
+ %left W
+       ^
+input.y:6.8: warning: useless precedence and associativity for V [-Wprecedence]
+ %right V
+        ^
+input.y:7.11: warning: useless precedence and associativity for U [-Wprecedence]
+ %nonassoc U
+           ^
+]])
+
+AT_CLEANUP
+
+
 ## ---------------- ##
 ## S/R in initial.  ##
 ## ---------------- ##
@@ -105,7 +192,7 @@ e: 'e' | /* Nothing. */;
 ]])
 
 AT_BISON_CHECK([-o input.c input.y], 0, [],
-[[input.y:4.9: warning: rule useless in parser due to conflicts: e: /* empty */ [-Wother]
+[[input.y:4.9: warning: rule useless in parser due to conflicts [-Wother]
 ]])
 
 AT_BISON_CHECK([-fcaret -o input.c input.y], 0, [],
@@ -833,7 +920,7 @@ cond:
 
 AT_BISON_CHECK([-o input.c input.y], 0, [],
 [[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
-input.y:12.3-18: warning: rule useless in parser due to conflicts: cond: cond "then" cond [-Wother]
+input.y:12.3-18: warning: rule useless in parser due to conflicts [-Wother]
 ]])
 
 AT_CLEANUP
@@ -877,7 +964,7 @@ id : '0';
 
 AT_BISON_CHECK([-o input.c --report=all input.y], 0, [],
 [[input.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
-input.y:4.6-8: warning: rule useless in parser due to conflicts: id: '0' [-Wother]
+input.y:4.6-8: warning: rule useless in parser due to conflicts [-Wother]
 ]])
 
 # Check the contents of the report.
@@ -1090,8 +1177,10 @@ e:   e '+' e
    ;
 ]])
 
-AT_BISON_CHECK([-o input.c input.y], 0, [],
+AT_BISON_CHECK([-Wall -o input.c input.y], 0, [],
 [[input.y: warning: 4 shift/reduce conflicts [-Wconflicts-sr]
+input.y:1.7-9: warning: useless precedence and associativity for '+' [-Wprecedence]
+input.y:2.7-9: warning: useless precedence and associativity for '*' [-Wprecedence]
 ]])
 AT_CLEANUP
 
@@ -1195,13 +1284,13 @@ reported_conflicts:
 AT_BISON_CHECK([[--report=all input.y]], 0, [],
 [[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
 input.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
-input.y:12.5-20: warning: rule useless in parser due to conflicts: resolved_conflict: 'a' unreachable1 [-Wother]
-input.y:20.5-20: warning: rule useless in parser due to conflicts: unreachable1: 'a' unreachable2 [-Wother]
-input.y:21.4: warning: rule useless in parser due to conflicts: unreachable1: /* empty */ [-Wother]
-input.y:25.13: warning: rule useless in parser due to conflicts: unreachable2: /* empty */ [-Wother]
-input.y:25.16: warning: rule useless in parser due to conflicts: unreachable2: /* empty */ [-Wother]
-input.y:31.5-7: warning: rule useless in parser due to conflicts: reported_conflicts: 'a' [-Wother]
-input.y:32.4: warning: rule useless in parser due to conflicts: reported_conflicts: /* empty */ [-Wother]
+input.y:12.5-20: warning: rule useless in parser due to conflicts [-Wother]
+input.y:20.5-20: warning: rule useless in parser due to conflicts [-Wother]
+input.y:21.4: warning: rule useless in parser due to conflicts [-Wother]
+input.y:25.13: warning: rule useless in parser due to conflicts [-Wother]
+input.y:25.16: warning: rule useless in parser due to conflicts [-Wother]
+input.y:31.5-7: warning: rule useless in parser due to conflicts [-Wother]
+input.y:32.4: warning: rule useless in parser due to conflicts [-Wother]
 ]])
 
 AT_CHECK([[cat input.output]], 0,
@@ -1348,10 +1437,10 @@ AT_CHECK([[cat input.y >> input-keep.y]])
 AT_BISON_CHECK([[input-keep.y]], 0, [],
 [[input-keep.y: warning: 2 shift/reduce conflicts [-Wconflicts-sr]
 input-keep.y: warning: 2 reduce/reduce conflicts [-Wconflicts-rr]
-input-keep.y:22.4: warning: rule useless in parser due to conflicts: unreachable1: /* empty */ [-Wother]
-input-keep.y:26.16: warning: rule useless in parser due to conflicts: unreachable2: /* empty */ [-Wother]
-input-keep.y:32.5-7: warning: rule useless in parser due to conflicts: reported_conflicts: 'a' [-Wother]
-input-keep.y:33.4: warning: rule useless in parser due to conflicts: reported_conflicts: /* empty */ [-Wother]
+input-keep.y:22.4: warning: rule useless in parser due to conflicts [-Wother]
+input-keep.y:26.16: warning: rule useless in parser due to conflicts [-Wother]
+input-keep.y:32.5-7: warning: rule useless in parser due to conflicts [-Wother]
+input-keep.y:33.4: warning: rule useless in parser due to conflicts [-Wother]
 ]])
 
 AT_CLEANUP
@@ -1531,7 +1620,7 @@ exp: 'a' | 'a';
 AT_BISON_CHECK([[2.y]], [[0]], [],
 [[2.y: warning: %expect-rr applies only to GLR parsers [-Wother]
 2.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
-2.y:3.12-14: warning: rule useless in parser due to conflicts: exp: 'a' [-Wother]
+2.y:3.12-14: warning: rule useless in parser due to conflicts [-Wother]
 ]])
 
 AT_CLEANUP