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tests: check token redeclaration

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* src/symtab.c (symbol_class_set): Report previous definitions when
redeclared.
* tests/input.at (Symbol redeclared): New.
This commit is contained in:
Akim Demaille
2019-09-06 17:47:16 +02:00
parent d3a86f7b20
commit 375eb71489
4 changed files with 58 additions and 6 deletions
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32
tests/input.at
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@@ -615,6 +615,38 @@ AT_CHECK_UNUSED_VALUES([1], [1])
AT_CLEANUP
## ------------------- ##
## Symbol redeclared. ##
## ------------------- ##
AT_SETUP([Symbol redeclared])
AT_DATA([[input.y]],
[[%token FOO FOO
%token BAR 12 BAR 12
%%
exp: FOO BAR
]])
AT_BISON_CHECK([-fcaret input.y], [0], [],
[[input.y:1.12-14: warning: symbol FOO redeclared [-Wother]
1 | %token FOO FOO
| ^~~
input.y:1.8-10: previous declaration
1 | %token FOO FOO
| ^~~
input.y:2.15-17: warning: symbol BAR redeclared [-Wother]
2 | %token BAR 12 BAR 12
| ^~~
input.y:2.8-10: previous declaration
2 | %token BAR 12 BAR 12
| ^~~
]])
AT_CLEANUP
## --------------------------- ##
## Symbol class redefinition. ##
## --------------------------- ##