Mirror/zeek
1
0
Fork 0
mirror of https://github.com/zeek/zeek.git synced 2025-10-02 06:38:20 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Expr: Warn on count underflow for c -= 1 and c = c - 1

Browse source 
I've skipped treating overflows as warnings, as ++ wrapping around at 0
doesn't currently trigger a runtime error and might be expected to be
quiet and silently wrap.

Closes #2486
This commit is contained in:
Arne Welzel 2022-11-29 15:58:36 +01:00
parent a07b0c333f
commit e48618e244
7 changed files with 67 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

5
testing/btest/Baseline/language.count-underflow/.stderr Normal file
View file

@ -0,0 +1,5 @@
### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
expression warning in <...>/count-underflow.zeek, line 10: count underflow (--c1)
expression warning in <...>/count-underflow.zeek, line 14: count underflow (c2 - 1)
expression warning in <...>/count-underflow.zeek, line 18: count underflow (c3 - 1)
expression warning in <...>/count-underflow.zeek, line 22: count underflow (1 - 2)

8
testing/btest/Baseline/language.count-underflow/out Normal file
View file

@ -0,0 +1,8 @@
### BTest baseline data generated by btest-diff. Do not edit. Use "btest -U/-u" to update. Requires BTest >= 0.63.
local c1 = 0; --c1; c1 == 18446744073709551615; T
local c2 = 0; c2 -= 1; c2 == 18446744073709551615; T
local c3 = 0; c3 = c3 - 1; c3 == 18446744073709551615; T
1 - 2, 18446744073709551615
local c4 = count_max; ++c4; c4 == 0; T
local c5 = count_max; c5 += 1; c5 == 0; T
local c6 = count_max; c6 = c6 + 1; c6 == 0; T