https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80076
Bug ID: 80076
Summary: -Wmisleading-indentation doesn't trigger when macro is
misindented
Product: gcc
Version: 7.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: andres at anarazel dot de
CC: dmalcolm at gcc dot gnu.org
Target Milestone: ---
Created attachment 40989
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40989&action=edit
reproducer
Hi,
-Wmisleading-indentation doesn't trigger when the misindented part of the code
consists of a macro. The attached example is silent when a macro is used, and
warns when a function is used.
#ifdef TRIGGER
static void elog(char *msg) { }
#else
#define elog(Y) printf(Y)
#endif
void foo (void);
void test (int flag)
{
if (flag)
foo ();
elog("could not identify CTID variable");
}
andres@alap4:~$ gcc -DTRIGGER -Wmisleading-indentation -c /tmp/repro.c
/tmp/repro.c: In function 'test':
/tmp/repro.c:13:3: warning: this 'if' clause does not guard...
[-Wmisleading-indentation]
if (flag)
^~
/tmp/repro.c:15:5: note: ...this statement, but the latter is misleadingly
indented as if it were guarded by the 'if'
elog("could not identify CTID variable");
^~~~
andres@alap4:~$ gcc -Wmisleading-indentation -c /tmp/repro.c
andres@alap4:~$ gcc --version
gcc (Debian 20170226-1) 7.0.1 20170226 (experimental) [trunk revision 245744]
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Not sure if this is a known "issue", or not. If it's hard to make that work
reliably for macros...
Andres
