[PATCH] {c, c++, fortran, java} Fix unitialised warnings with -O3

[Manfred Hollstein <mh at suse dot com>]

Hi there,

today I bootstrapped mainline checked out at "Tue Jul 19 06:10:26 UTC
2005" using the usual:

  BOOT_CFLAGS:      -O2 -march=i686 -mtune=pentium4 -fomit-frame-pointer
  CFLAGS:           -O2 -march=i686 -mtune=pentium4 -fomit-frame-pointer
  CXXFLAGS:         -O2 -march=i686 -mtune=pentium4 -fomit-frame-pointer -g
  GCJFLAGS:         -O2 -march=i686 -mtune=pentium4 -fomit-frame-pointer -g

(Results can be found at
<http://gcc.gnu.org/ml/gcc-testresults/2005-07/msg01032.html>). I then
changed the "-O2" into "-O3" and tried to bootstrap again, but failed
due to several warnings like

  ../../gcc-20050719/gcc/tree-ssa-structalias.c: In function 'int_add_graph_edge':
  ../../gcc-20050719/gcc/tree-ssa-structalias.c:945: warning: 'edge.weights' is used uninitialized in this function

This happened in all of the following languages: c, c++, fortran, and
java.

The attached patch fixes this. I bootstrapped and regtested it on
i686-sles9-linux-gnu without any regressions.

OK to install?

Cheers.

l8er
manfred


gcc/ChangeLog:

2005-07-19  Manfred Hollstein  <mh@suse.com>

	* tree-ssa-structalias.c (merge_graph_nodes): Fix uninitialised
	warnings.
	(int_add_graph_edge): Likewise.
	(collapse_nodes): Likewise.
	(process_unification_queue): Likewise.

gcc/cp/ChangeLog

2005-07-19  Manfred Hollstein  <mh@suse.com>

	* parser.c (cp_parser_declaration): Fix unitialised warnings.

gcc/fortran/ChangeLog

2005-07-19  Manfred Hollstein  <mh@suse.com>

	* match.c (gfc_match_symbol): Fix uninitialised warnings.
	* matchexp.c (gfc_match_expr): Likewise.

gcc/java/ChangeLog

2005-07-19  Manfred Hollstein  <mh@suse.com>

	* verify-impl.c (check_class_constant): Fix uninitialised warnings.
	(check_constant): Likewise.
	(check_wide_constant): Likewise.

Attachment: gcc-warnings.patch
Description: Text document