https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77331
Michał Mirosław <mirq-gccboogs at rere dot qmqm.pl> changed:
What |Removed |Added
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CC| |mirq-gccboogs at rere dot
qmqm.pl
--- Comment #1 from Michał Mirosław <mirq-gccboogs at rere dot qmqm.pl> ---
This looks similar (related to PR#52952?): when showing error for concatenated
format string, caret does not point to the triggering format.
void foo(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
#define PREFIX "a:"
#define A(fmt, args...) foo(PREFIX fmt ".", ##args)
void bar()
{
A("%");
}
$ arm-linux-gnueabihf-gcc-7 -fsyntax-only -Wformat foo.c
foo.c: In function ‘bar’:
foo.c:3:16: warning: conversion lacks type at end of format [-Wformat=]
#define PREFIX "a:"
^
foo.c:4:29: note: in expansion of macro ‘PREFIX’
#define A(fmt, args...) foo(PREFIX fmt ".", ##args)
^~~~~~
foo.c:8:2: note: in expansion of macro ‘A’
A("%");
^
foo.c:4:41: note: format string is defined here
#define A(fmt, args...) foo(PREFIX fmt ".", ##args)
^
The same happens with gcc-6.3.0.
