[GNATS 26594] Spurious diagnostic expression must have constant value

[jhsedg]

Customer bug ID

url/src/detail/replacement_field_rule.cpp, gnats/26594.C

Description

​The preprocessed test is in gnats/26594.C
​
​cpfe -DTEST_NUMBER=1 --gnu_version=120100 -w --no_inlining --no_wrap_diagnostics --display_error --c++20 -tused Test_name.c
​"../libs/url/src/detail/replacement_field_rule.cpp", line 70: error #28: expression must have a constant value
​ grammar::tuple_rule(
​ ^
​"../libs/url/src/detail/replacement_field_rule.cpp", line 70: note #2431-D: expression not folded to a constant due to excessive constexpr
​function call complexity
​ grammar::tuple_rule(
​ ^
​
​"../libs/url/src/detail/replacement_field_rule.cpp", line 100: error #28: expression must have a constant value
​ grammar::optional_rule(
​ ^
​"../libs/url/src/detail/replacement_field_rule.cpp", line 100: note #2431-D: expression not folded to a constant due to excessive constexpr
​ function call complexity
​ grammar::optional_rule(
​ ^
​
​2 errors detected in the compilation of "Test_name.c".