https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65834
Bug ID: 65834
Summary: give error for #if with no expression at the previous
location
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: preprocessor
Assignee: unassigned at gcc dot gnu.org
Reporter: manu at gcc dot gnu.org
Distilled from:
http://www.linuxquestions.org/questions/linux-from-scratch-13/replace-gcc-with-clang-4175491981/#post5108443
extern void foo(void);
#define TEST
int bar(void)
{
#if TEST
foo();
#endif
return 0;
}
Currently:
test.c:6:9: error: #if with no expression
#if TEST
^
Expected something like:
test.c:6:9: error: #if with no expression
#if TEST
^
test.c:2:14: note: in expansion of macro ‘TEST’
I think this could be possible by giving the error at the location of TEST
(which should be the previously encoded source_location) rather that at the
current one.
#define TEST
^
