https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90677
Bug ID: 90677
Summary: gcc-9.1.0 fails to build __gcc_diag__ souce: error:
'cgraph_node' is not defined as a type
Product: gcc
Version: 9.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: slyfox at inbox dot ru
Target Milestone: ---
Minimal reproducer:
$ cat tree-mudflap.i
int cgraph_node;
void a() __attribute__((__format__(__gcc_diag__, 2, 3)));
$ LANG=C gcc-8.3.0 -fsyntax-only -c tree-mudflap.i
$ LANG=C gcc-9.1.0 -fsyntax-only -c tree-mudflap.i
tree-mudflap.i:2:1: error: 'cgraph_node' is not defined as a type
2 | void a() __attribute__((__format__(__gcc_diag__, 2, 3)));
| ^~~~
The original build failure was observed on gcc-4.6.4.
gcc-9.1.0 failed to to build gcc-4.6.4 while gcc-8.3.0 succeeded.
I was not able to produce a reasonable workaround to make 4.6.4 compile again.
gcc-4.6.4 failure looks like that:
In file included from
/tmp/portage/sys-devel/gcc-4.6.4-r1/work/gcc-4.6.4/gcc/diagnostic.h:25,
from
/tmp/portage/sys-devel/gcc-4.6.4-r1/work/gcc-4.6.4/gcc/tree-mudflap.c:41:
/tmp/portage/sys-devel/gcc-4.6.4-r1/work/gcc-4.6.4/gcc/pretty-print.h:322:6:
error: 'cgraph_node' is not defined as a type
322 | ATTRIBUTE_GCC_PPDIAG(2,3);
| ^~~~~~~~~~~~~
/tmp/portage/sys-devel/gcc-4.6.4-r1/work/gcc-4.6.4/gcc/pretty-print.h:325:6:
error: 'cgraph_node' is not defined as a type
325 | ATTRIBUTE_GCC_PPDIAG(2,3);
| ^~~~~~~~~~~~~
I think there are two bugs here:
- (major) gcc-9.1.0 fails to build the code that used to compile
- (minor) diagnostic complains about 'cgraph_node' but does not mention it in
warning text.
