decl.c (start_decl): Improve error location.

decl.c (start_decl): Improve error location.

/cp
2019-01-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (start_decl): Improve error location.
	* decl2.c (grokfield): Likewise.

/testsuite
2019-01-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/diagnostic/typedef-initialized.C: New.

/cp
2019-01-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (grokdeclarator): Move further up the location_t loc
	declaration and use the location when building a TYPE_DECL for
	a typedef name.
	* decl2.c (grokbitfield): Use DECL_SOURCE_LOCATION in the error
	about an ill-formed bit-field as typedef.

/testsuite
2019-01-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/diagnostic/bitfld3.C: New.

From-SVN: r267932