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[PATCH v2 2/8] config: report correct line number upon error

From
Johannes Schindelin <johannes.schindelin@gmx.de>
Date
Jun 8, 2017, 19:53 UTC
Message-ID
<291e8b643990aee04654b34c6f953387c3c030d4.1496951503.git.johannes.schindelin@gmx.de>
In-Reply-To
<cover.1496951503.git.johannes.schindelin@gmx.de>

When get_value() parses a key/value pair, it is possible that the line number is decreased (because the \n has been consumed already) before the key/value pair is passed to the callback function, to allow for the correct line to be attributed in case of an error.

However, when git_parse_source() asks get_value() to parse the key/value pair, the error reporting is performed *after* get_value() returns.

Which means that we have to be careful not to increase the line number in get_value() after the callback function returned an error.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
 config.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/config.c b/config.c
index 146cb3452ad..9b88531a70d 100644
--- a/config.c
+++ b/config.c
@@ -604,7 +604,8 @@ static int get_value(config_fn_t fn, void *data, struct strbuf *name)
 	 */
 	cf->linenr--;
 	ret = fn(name->buf, value, data);
-	cf->linenr++;
+	if (!ret)
+		cf->linenr++;
 	return ret;
 }
 
-- 
2.13.0.windows.1.460.g13f583bedb5
Previous: Johannes SchindelinNext: Jeff King
Message 2 of 32 in “Avoid problem where git_dir is set after alias expansion”
  1. 0/8 Avoid problem where git_dir is set after alias expansionJohannes Schindelin, Jun 8, 2017
  2. 2/8 config: report correct line number upon errorJohannes Schindelin, Jun 8, 2017
  3. Jeff KingJun 10, 2017
  4. Johannes SchindelinJun 13, 2017
  5. Jeff KingJun 13, 2017
  6. 4/8 read_early_config(): optionally return the worktree's top-level directoryJohannes Schindelin, Jun 8, 2017
  7. Jeff KingJun 10, 2017
  8. 1/8 discover_git_directory(): avoid setting invalid git_dirJohannes Schindelin, Jun 8, 2017
  9. Jeff KingJun 10, 2017
  10. 3/8 help: use early config when autocorrecting aliasesJohannes Schindelin, Jun 8, 2017
  11. Jeff KingJun 10, 2017
  12. 5/8 t1308: relax the test verifying that empty alias values are disallowedJohannes Schindelin, Jun 8, 2017
  13. Junio C HamanoJun 10, 2017
  14. Johannes SchindelinJun 13, 2017
  15. Junio C HamanoJun 13, 2017
  16. 6/8 t7006: demonstrate a problem with aliases in subdirectoriesJohannes Schindelin, Jun 8, 2017
  17. 8/8 Use the early config machinery to expand aliasesJohannes Schindelin, Jun 8, 2017
  18. Jeff KingJun 10, 2017
  19. Jeff KingJun 10, 2017
  20. Junio C HamanoJun 12, 2017
  21. Johannes SchindelinJun 13, 2017
  22. Jeff KingJun 13, 2017
  23. 7/8 alias_lookup(): optionally return top-level directoryJohannes Schindelin, Jun 8, 2017
  24. Jeff KingJun 10, 2017
  25. Johannes SchindelinJun 13, 2017
  26. Jeff KingJun 13, 2017
  27. Johannes SchindelinJun 13, 2017
  28. Jeff KingJun 13, 2017
  29. Junio C HamanoJun 13, 2017
  30. Jeff KingJun 14, 2017
  31. Johannes SchindelinJun 14, 2017
  32. Brandon WilliamsJun 8, 2017

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