https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96935
--- Comment #3 from Jan Smets <jan.smets at nokia dot com> ---
A bisect resulted in this commit :
commit 0d48e8779c6a9ac88f5efd1b4a2d40f43ef75faf
Author: David Malcolm <dmalc...@redhat.com>
Date: Fri Oct 5 19:02:17 2018 +0000
Support string locations for C++ in -Wformat (PR c++/56856)
-Wformat in the C++ FE doesn't work as well as it could:
(a) it doesn't report precise locations within the string literal, and
(b) it doesn't underline arguments for those arguments
!CAN_HAVE_LOCATION_P,
despite having location wrapper nodes.
Your suggestion doesn't trigger it for me.
I'v built GCC with -g -O0 , but the standard provided backtrace didn't include
function call arguments.
A printf confirms your suspicion about start.column == 0
=> start.column=0 literal_length=1
