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%nterm: do not accept character literals

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Reported by Rici Lake.
http://lists.gnu.org/archive/html/bug-bison/2018-10/msg00000.html

* src/complain.h: Formatting change.
* src/parse-gram.y (id): Reject character literals used in a context
for non-terminals.
* tests/input.at (Invalid %nterm uses): Check that.
This commit is contained in:
Akim Demaille
2018-11-25 18:07:46 +01:00
parent 4bddd33439
commit 9686b585e7
3 changed files with 25 additions and 3 deletions
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16
tests/input.at
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@@ -140,10 +140,12 @@ AT_DATA([input.y],
[[%nterm expr "expression";
%nterm term 123;
%nterm fact 124 "factor";
%nterm '+' '*';
%nterm "number";
%%
expr: expr '+' term | term;
term: term '*' fact | fact;
fact: '0';
fact: "number";
]])
AT_BISON_CHECK([-fcaret input.y], [1], [],
@@ -168,6 +170,18 @@ input.y:3.13-15: error: non-terminals cannot be given an explicit number
input.y:3.17-24: error: non-terminals cannot be given a string alias
%nterm fact 124 "factor";
^^^^^^^^
input.y:4.1-6: warning: deprecated directive, use '%type' [-Wdeprecated]
%nterm '+' '*';
^^^^^^
input.y:4.8-10: error: character literals cannot be non-terminals
%nterm '+' '*';
^^^
input.y:5.1-6: warning: deprecated directive, use '%type' [-Wdeprecated]
%nterm "number";
^^^^^^
input.y:5.8-15: error: syntax error, unexpected string, expecting char or identifier or <tag>
%nterm "number";
^^^^^^^^
]])
AT_CLEANUP