https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97923
Bug ID: 97923
Summary: [GCOV]Wrong code coverage for multiple expressions
with Logical OR Operator at multiple lines
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: gcov-profile
Assignee: unassigned at gcc dot gnu.org
Reporter: yangyibiao at outlook dot com
CC: marxin at gcc dot gnu.org
Target Milestone: ---
$ cat test.c
int foo(int c)
{
return ((c >= 'A' && c <= 'Z')
|| (c >= 'a' && c <= 'z')
|| (c >= '0' && c <= '0'));
}
int main() { foo(0); }
$ gcc -O0 --coverage test.c; ./a.out; gcov test.c; cat test.c.gcov
File 'test.c'
Lines executed:80.00% of 5
Creating 'test.c.gcov'
-: 0:Source:test.c
-: 0:Graph:test.gcno
-: 0:Data:test.gcda
-: 0:Runs:1
1: 1:int foo(int c)
-: 2:{
#####: 3: return ((c >= 'A' && c <= 'Z')
1*: 4: || (c >= 'a' && c <= 'z')
2*: 5: || (c >= '0' && c <= '0'));
-: 6:}
-: 7:
1: 8:int main() { foo(0); }
###################################
Line 5 is wrongly marked as executed twice.
When debug this program in debugger, Line 5 is only hit once.
$ gcc --version; gcov --version
gcc (GCC) 10.0.1 20200419 (experimental)
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
gcov (GCC) 10.0.1 20200419 (experimental)
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.
