https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85433
Bug ID: 85433
Summary: -fdiagnostics-color=auto doesn't work properly with
LTO
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: dmalcolm at gcc dot gnu.org
Target Milestone: ---
Running:
$ cat 1.c
struct A
{
int a;
double b;
};
extern void foo (struct A *);
int main()
{
struct A a;
foo (&a);
return a.a;
}
$ cat 2.c
struct A
{
int a;
};
$ gcc *.c -fdiagnostics-color=auto -flto
1.c:7:13: warning: type of ‘foo’ does not match original declaration
[-Wlto-type-mismatch]
extern void foo (struct A *);
^
2.c:7:6: note: ‘foo’ was previously declared here
void foo (struct A *a)
^
2.c:7:6: note: code may be misoptimized unless -fno-strict-aliasing is used
Does not produce color output, while:
$ gcc *.c -fdiagnostics-color=always -flto
does. David is it a known issue?
