[tarantool-patches] [PATCH] Fix csv crash with ending space and empty field

[Alexander Turenko <alexander.turenko@tarantool.org>]

Fixes #3489.
---
branch: Totktonada/gh-3489-fix-csv-crash
travis-ci: https://travis-ci.org/tarantool/tarantool/builds/405298528

 src/lib/csv/csv.c         | 1 +
 test/app-tap/csv.test.lua | 7 ++++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/lib/csv/csv.c b/src/lib/csv/csv.c
index 5f4ff9a9c..0a2f7b4d0 100644
--- a/src/lib/csv/csv.c
+++ b/src/lib/csv/csv.c
@@ -192,6 +192,7 @@ csv_parse_impl(struct csv *csv, const char *s, const char *end, bool firstonly)
 				/* end of field */
 				csv->state = CSV_LEADING_SPACES;
 				csv->bufp -= csv->ending_spaces;
+				csv->ending_spaces = 0;
 				if (firstonly) {
 					csv->state = CSV_NEWFIELD;
 					return p;
diff --git a/test/app-tap/csv.test.lua b/test/app-tap/csv.test.lua
index 472a8d23e..0a656aaa3 100755
--- a/test/app-tap/csv.test.lua
+++ b/test/app-tap/csv.test.lua
@@ -36,7 +36,7 @@ local test6_ans = "|23|\t|456|\t|abcac|\t|'multiword field 4'|\t\n|none|" ..
                   "lag[ flag ])|\t\n||\t||\t||\t\n"
 
 test = tap.test("csv")
-test:plan(11)
+test:plan(12)
 
 readable = {}
 readable.read = myread
@@ -128,4 +128,9 @@ fio.unlink(file3)
 fio.unlink(file4)
 fio.rmdir(tmpdir)
 
+-- gh-3489: crash with ending space and empty field
+local res = csv.load('929,N1XDN ,,"Enfield, CT",')
+local exp = {{'929', 'N1XDN', '', 'Enfield, CT', ''}}
+test:is_deeply(res, exp, 'gh-3489')
+
 test:check()
-- 
2.17.1