[Bug middle-end/30729] [4.1/4.2 Regression] value computed is not used warning with unused result of va_arg

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

------- Comment #4 from pinskia at gcc dot gnu dot org  2007-03-09 23:20 -------
Subject: Bug 30729

Author: pinskia
Date: Fri Mar  9 23:20:28 2007
New Revision: 122769

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=122769
Log:
2007-03-09  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        PR middle-end/30729
        * stmt.c (warn_if_unused_value): VA_ARG_EXPR has side
        effects unknown to this function, return early.

2007-03-09  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        PR middle-end/30729
        * gcc.dg/Wunused-value-2.c: New testcase.


Added:
    branches/gcc-4_2-branch/gcc/testsuite/gcc.dg/Wunused-value-2.c
      - copied unchanged from r122027,
trunk/gcc/testsuite/gcc.dg/Wunused-value-2.c
Modified:
    branches/gcc-4_2-branch/gcc/ChangeLog
    branches/gcc-4_2-branch/gcc/stmt.c
    branches/gcc-4_2-branch/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30729