[Tarantool-patches] [PATCH] test: fix warnings spotted by luacheck

[sergeyb@tarantool.org]

From: Sergey Bronnikov <sergeyb@tarantool.org>

luacheck is integrated in tarantool CI pipeline and respects .luacheckrc in
tarantool repo, so jit global is suppressed there.

Co-authored-by: Igor Munkin <imun@tarantool.org>
Reviewed-by: Igor Munkin <imun@tarantool.org>
---
 ...gh-4476-fix-string-find-recording.test.lua |  6 ++---
 .../lj-494-table-chain-infinite-loop.test.lua | 26 +++++++++----------
 test/or-232-unsink-64-kptr.test.lua           |  1 +
 3 files changed, 17 insertions(+), 16 deletions(-)

diff --git a/test/gh-4476-fix-string-find-recording.test.lua b/test/gh-4476-fix-string-find-recording.test.lua
index 209090a..fb55680 100755
--- a/test/gh-4476-fix-string-find-recording.test.lua
+++ b/test/gh-4476-fix-string-find-recording.test.lua
@@ -51,13 +51,13 @@ local err = [[module 'kit.1.10.3-136' not found:
 	no file '/usr/local/lib64/lua/5.1/kit.so'
 	no file '/usr/lib64/lua/5.1/kit.so']]
 
-local at, s, e
+local at, _, e
 local count_vm = 0
 
 jit.off()
 
 repeat
-  s, e = err:find("\n\t", at, true)
+  _, e = err:find("\n\t", at, true)
   at = e
   count_vm = count_vm + 1
 until not e
@@ -68,7 +68,7 @@ jit.on()
 jit.opt.start(0, 'hotloop=1')
 
 repeat
-  s, e = err:find("\n\t", at, true)
+  _, e = err:find("\n\t", at, true)
   at = e
   count_jit = count_jit + 1
   assert(count_jit <= count_vm, "Trace goes in cycles")
diff --git a/test/lj-494-table-chain-infinite-loop.test.lua b/test/lj-494-table-chain-infinite-loop.test.lua
index 0daeca3..314eb29 100755
--- a/test/lj-494-table-chain-infinite-loop.test.lua
+++ b/test/lj-494-table-chain-infinite-loop.test.lua
@@ -16,7 +16,7 @@ ffi.cdef("char* strstr(const char*, const char*)")
 local strstr = ffi.C.strstr
 local cast = ffi.cast
 local str_hash_offset = cast("uint32_t*", strstr("*", ""))[-2] == 1 and 3 or 2
-function str_hash(s)
+local function str_hash(s)
     return cast("uint32_t*", strstr(s, "")) - str_hash_offset
 end
 local table_new = require("table.new")
@@ -25,17 +25,17 @@ local table_new = require("table.new")
 local victims = {}
 local orig_hash = {}
 for c in ("abcdef"):gmatch"." do
-    v = c .. "{09add58a-13a4-44e0-a52c-d44d0f9b2b95}"
+    local v = c .. "{09add58a-13a4-44e0-a52c-d44d0f9b2b95}"
     victims[c] = v
     orig_hash[c] = str_hash(v)[0]
 end
 collectgarbage()
 
 do --- Basic version of the problem
-    for k, v in pairs(victims) do
+    for _, v in pairs(victims) do
         str_hash(v)[0] = 0
     end
-    t = table_new(0, 8)
+    local t = table_new(0, 8)
     -- Make chain a -> b -> c -> d, all with a as primary
     t[victims.a] = true
     t[victims.d] = true
@@ -59,10 +59,10 @@ end
 collectgarbage()
 
 do --- Just `mn != freenode` can lead to infinite loops
-    for k, v in pairs(victims) do
+    for _, v in pairs(victims) do
         str_hash(v)[0] = 0
     end
-    t = table_new(0, 8)
+    local t = table_new(0, 8)
     -- Make chain a -> b -> c -> d, all with a as primary
     t[victims.a] = true
     t[victims.d] = true
@@ -85,10 +85,10 @@ end
 collectgarbage()
 
 do --- Just `mn != nn` can lead to infinite loops
-    for k, v in pairs(victims) do
+    for _, v in pairs(victims) do
         str_hash(v)[0] = 0
     end
-    t = table_new(0, 8)
+    local t = table_new(0, 8)
     -- Make chain a -> b -> c -> d -> e, all with a as primary
     t[victims.a] = true
     t[victims.e] = true
@@ -113,10 +113,10 @@ end
 for i = 0, 10 do --- Non-strings can need rechaining too
     collectgarbage()
 
-    k = tonumber((("0x%xp-1074"):format(i)))
+    local k = tonumber((("0x%xp-1074"):format(i)))
     str_hash(victims.a)[0] = 0
     str_hash(victims.b)[0] = 0
-    t = table_new(0, 4)
+    local t = table_new(0, 4)
     -- a -> b, both with a as primary
     t[victims.a] = true
     t[victims.b] = true
@@ -140,10 +140,10 @@ end
 for i = 0, 10 do --- Non-strings can be moved to freenode
     collectgarbage()
 
-    k = false
+    local k = false
     str_hash(victims.a)[0] = 0
     str_hash(victims.b)[0] = 0
-    t = table_new(0, 4)
+    local t = table_new(0, 4)
     -- a -> k -> b, all with a as primary
     t[victims.a] = true
     t[victims.b] = true
@@ -160,7 +160,7 @@ end
 collectgarbage()
 
 do --- Do not forget to advance freenode in the not-string case
-    t = table_new(0, 4)
+    local t = table_new(0, 4)
     -- Chain of colliding numbers
     t[0x0p-1074] = true
     t[0x4p-1074] = true
diff --git a/test/or-232-unsink-64-kptr.test.lua b/test/or-232-unsink-64-kptr.test.lua
index d9b3f05..0178a6e 100755
--- a/test/or-232-unsink-64-kptr.test.lua
+++ b/test/or-232-unsink-64-kptr.test.lua
@@ -31,6 +31,7 @@ local array = ffi.new("struct { int x; } [1]")
 
 local function fn(i)
     local struct = array[0]     -- Load pointer that the JIT will constify.
+    -- luacheck: ignore
     if i == 1000 then end       -- Force trace exit when i==1000.
     struct.x = 0                -- Ensure that 'struct' is live after exit.
 end
-- 
2.26.2