https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119116
Bug ID: 119116
Summary: std::use_facet exception message needs more details
Product: gcc
Version: 14.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: programmingkidx at gmail dot com
Target Milestone: ---
Currently when std:: use_facet() throws a bad_cast exception, the only message
we will see from the what() function is "std::bad_cast". I ask that this
message be enhanced to include more helpful debug messages like these:
- has_facet returned false
- facet id too big
- facet id equal to zero
With any of these messages the exception's what() message should include the
info that use_facet() is what threw the exception.
This could be an example message:
use_facet() has thrown a std::bad_cast
reason: has_facet returned false
