[Bug c++/84056] map insertes a pair when check a value

[alper.ccc at yandex dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84056

--- Comment #1 from Alper Ce <alper.ccc at yandex dot com> ---
output:

a => 1
b => 2
Map after if condition(a new pair ['c':0] inserted in map!):
a => 1
b => 2
c => 0