[Bug c/59871] [4.7/4.8/4.9 Regression] No unused value warning for comma expression

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59871

--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Thu Jan 23 19:04:29 2014
New Revision: 207002

URL: http://gcc.gnu.org/viewcvs?rev=207002&root=gcc&view=rev
Log:
    PR c/59871
c/
    * c-typeck.c (build_compound_expr): Warn even for right-hand operand
    of a comma expression.
    (emit_side_effect_warnings): Likewise.
libdecnumber/
    * decNumberLocal.h (UBFROMUS, UBFROMUI): Remove last argument.
testsuite/
    * gcc.dg/20020220-2.c: Adjust dg-warning message.
    * gcc.dg/pr59871.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr59871.c
Modified:
    trunk/gcc/c/ChangeLog
    trunk/gcc/c/c-typeck.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/20020220-2.c
    trunk/libdecnumber/ChangeLog
    trunk/libdecnumber/decNumberLocal.h