https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69093
Bug ID: 69093
Summary: implement -fmacro-backtrace-limit
Product: gcc
Version: 5.3.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: preprocessor
Assignee: unassigned at gcc dot gnu.org
Reporter: patrick.pelissier at gmail dot com
Target Milestone: ---
Recent gcc performs full backtrace when error / warning appear within a macro
but has not any option to limit its size.
This makes gcc hard to use for debugging deferred recursive macros (See
https://github.com/pfultz2/Cloak/wiki/C-Preprocessor-tricks,-tips,-and-idioms):
in such cases, the backtrace is huge (more than 5000 lines of backtrace per
instance) and useless.
clang has the option -fmacro-backtrace-limit for this purpose.
