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cex: make "rerun with '-Wcex'" a note instead of a warning

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Currently the suggestion to rerun is a -Wother warning:

    warning: 2 shift/reduce conflicts [-Wconflicts-sr]
    warning: rerun with option '-Wcounterexamples' to generate conflict counterexamples [-Wother]

Instead, let's attach it as a subnote of the diagnostic (in the
current case, -Wconflicts-sr):

    warning: 2 shift/reduce conflicts [-Wconflicts-sr]
    note: rerun with option '-Wcounterexamples' to generate conflict counterexamples

* src/conflicts.c (conflicts_print): Do that.
Adjust the test suite.
This commit is contained in:
Akim Demaille
2020-07-21 06:52:10 +02:00
parent 28769d608e
commit 6b78e50cef
7 changed files with 60 additions and 47 deletions
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4
tests/existing.at
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@@ -434,7 +434,7 @@ input.y:323.10: warning: empty rule without %empty [-Wempty-rule]
]AT_COND_CASE([[canonical LR]],
[[input.y: warning: 265 shift/reduce conflicts [-Wconflicts-sr]]],
[[input.y: warning: 65 shift/reduce conflicts [-Wconflicts-sr]]])[
input.y: warning: rerun with option '-Wcounterexamples' to generate conflict counterexamples [-Wother]
input.y: note: rerun with option '-Wcounterexamples' to generate conflict counterexamples
input.y:39.1-5: warning: useless associativity for FUNC_CALL, use %precedence [-Wprecedence]
input.y:44.1-5: warning: useless associativity for YNUMBER, use %precedence [-Wprecedence]
input.y:44.1-5: warning: useless associativity for YSTRING, use %precedence [-Wprecedence]
@@ -1419,7 +1419,7 @@ input.y:591.18: warning: empty rule without %empty [-Wempty-rule]
input.y: warning: 144 reduce/reduce conflicts [-Wconflicts-rr]]],
[[input.y: warning: 78 shift/reduce conflicts [-Wconflicts-sr]
input.y: warning: 10 reduce/reduce conflicts [-Wconflicts-rr]]])[
input.y: warning: rerun with option '-Wcounterexamples' to generate conflict counterexamples [-Wother]
input.y: note: rerun with option '-Wcounterexamples' to generate conflict counterexamples
input.y:72.1-5: warning: useless associativity for HQUA, use %precedence [-Wprecedence]
input.y:53.1-6: warning: useless associativity for HASSIGN, use %precedence [-Wprecedence]
input.y:54.1-5: warning: useless associativity for HORELSE, use %precedence [-Wprecedence]