[Bug middle-end/19515] [4.0 Regression] Violation of C99 6.7.8 §21 for unions

["cvs-commit at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-01-26 15:21 -------
Subject: Bug 19515

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	rth@gcc.gnu.org	2005-01-26 15:20:53

Modified files:
	gcc            : ChangeLog expr.c gimplify.c tree.h 
Added files:
	gcc/testsuite/gcc.c-torture/execute: pr19515.c 

Log message:
	PR middle-end/19515
	* expr.c (categorize_ctor_elements): New argument p_must_clear.
	(categorize_ctor_elements_1): Likewise.  Detect a union that isn't
	fully initialized.
	(mostly_zeros_p): Update for new categorize_ctor_elements argument.
	* gimplify.c (gimplify_init_constructor): Likewise.  Only shove
	objects into static storage if they have more than one non-zero value.
	* tree.h (categorize_ctor_elements): Update decl.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.7285&r2=2.7286
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/expr.c.diff?cvsroot=gcc&r1=1.772&r2=1.773
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/gimplify.c.diff?cvsroot=gcc&r1=2.106&r2=2.107
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree.h.diff?cvsroot=gcc&r1=1.680&r2=1.681
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/execute/pr19515.c.diff?cvsroot=gcc&r1=NONE&r2=1.1



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19515