Fix bootstrap on AIX by adding c-family/c-type-mismatch.cc [PR115167]

PR bootstrap/115167 reports a bootstrap failure on AIX triggered by
r15-636-g770657d02c986c whilst building f951 in stage 2, due to
the linker not being able to find symbols for:

  vtable for range_label_for_type_mismatch
  range_label_for_type_mismatch::get_text(unsigned int) const

The only users of the class range_label_for_type_mismatch are in the
C/C++ frontends, each of which supply their own implementation of:

  range_label_for_type_mismatch::get_text(unsigned int) const

i.e. we had a cluster of symbols that was disconnnected from any
users on f951.

The above patch added a new range_label::get_effects vfunc to the
base class.  My hunch is that we were getting away with not defining
the symbol for Fortran with AIX's linker before (since none of the
users are used), but adding the get_effects vfunc has somehow broken
things (possibly because there's an empty implementation in the base
class in the *header*).

The following patch moves all of the code in
gcc/gcc-rich-location.[cc,h,o} defining and using
range_label_for_type_mismatch to a new
gcc/c-family/c-type-mismatch.{cc,h,o}, to help the linker ignore this
cluster of symbols when it's disconnected from users.

I was able to reproduce the failure without the patch, and then
successfully bootstrap with this patch on powerpc-ibm-aix7.3.1.0
(cfarm119).

gcc/ChangeLog:
	PR bootstrap/115167
	* Makefile.in (C_COMMON_OBJS): Add c-family/c-type-mismatch.o.
	* gcc-rich-location.cc
	(maybe_range_label_for_tree_type_mismatch::get_text): Move to
	c-family/c-type-mismatch.cc.
	(binary_op_rich_location::binary_op_rich_location): Likewise.
	(binary_op_rich_location::use_operator_loc_p): Likewise.
	* gcc-rich-location.h (class range_label_for_type_mismatch):
	Likewise.
	(class maybe_range_label_for_tree_type_mismatch): Likewise.
	(class op_location_t): Likewise for forward decl.
	(class binary_op_rich_location): Likewise.

gcc/c-family/ChangeLog:
	PR bootstrap/115167
	* c-format.cc: Replace include of "gcc-rich-location.h" with
	"c-family/c-type-mismatch.h".
	* c-type-mismatch.cc: New file, taking material from
	gcc-rich-location.cc.
	* c-type-mismatch.h: New file, taking material from
	gcc-rich-location.h.
	* c-warn.cc: Replace include of "gcc-rich-location.h" with
	"c-family/c-type-mismatch.h".

gcc/c/ChangeLog:
	PR bootstrap/115167
	* c-objc-common.cc: Replace include of "gcc-rich-location.h" with
	"c-family/c-type-mismatch.h".
	* c-typeck.cc: Likewise.

gcc/cp/ChangeLog:
	PR bootstrap/115167
	PR bootstrap/115167
	* call.cc: Replace include of "gcc-rich-location.h" with
	"c-family/c-type-mismatch.h".
	* error.cc: Likewise.
	* typeck.cc: Likewise.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/gcc/c/c-objc-common.cc b/gcc/c/c-objc-common.cc
index b7c72d2..42a62c8 100644
--- a/gcc/c/c-objc-common.cc
+++ b/gcc/c/c-objc-common.cc
@@ -27,7 +27,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "gimple-pretty-print.h"
 #include "langhooks.h"
 #include "c-objc-common.h"
-#include "gcc-rich-location.h"
+#include "c-family/c-type-mismatch.h"
 #include "stringpool.h"
 #include "attribs.h"
 #include "dwarf2.h"