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diagnostics: fix invalid error message indentation

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https://lists.gnu.org/archive/html/bison-patches/2019-08/msg00007.html

When Bison is started with a flag that suppresses warning messages, the
error_message() function can produce a few gigabytes of indentation
because of a dangling pointer.

* src/complain.c (error_message): Don't reset indent_ptr here, but...
(complain_indent): here.
* tests/diagnostics.at (Indentation with message suppression): Check
this case.
This commit is contained in:
László Várady
2019-08-09 14:24:14 +02:00
committed by Akim Demaille
parent 47262c36bb
commit e63811dd86
4 changed files with 36 additions and 1 deletions
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NEWS
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@@ -2,6 +2,10 @@ GNU Bison NEWS
* Noteworthy changes in release ?.? (????-??-??) [?]
** Bug fixes
In some cases, when warnings are disabled, bison could emit tons of white
spaces as diagnostics.
* Noteworthy changes in release 3.4.1 (2019-05-22) [stable]