[GNATS 25915] Spurious diagnostic expression must have constant value due to excessive constexpr function ca ll complexity

[jhsedg]

Customer bug ID

gnats/25915.C, boost/url/test/unit/doc_grammar.test/doc_grammar.cpp

Description

​cpfe -DTEST_NUMBER=1 --gnu_version=120100 -w --no_inlining --no_wrap_diagnostics --display_error --error_limit 1 --c
​++20 -tused Test_name.c
​"Test_name.c", line 100487: error #28: expression must have a constant value
​ constexpr lut_chars visible_chars( is_visible {} );
​ ^
​"Test_name.c", line 100487: note #2431-D: expression not folded to a constant due to excessive constexpr function ca
​ll complexity
​ constexpr lut_chars visible_chars( is_visible {} );
​ ^
​
​Error limit reached.
​1 error detected in the compilation of "Test_name.c".