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r222889 - in /trunk/gcc: ChangeLog c-family/Cha...
- From: mpolacek at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Thu, 07 May 2015 19:36:32 -0000
- Subject: r222889 - in /trunk/gcc: ChangeLog c-family/Cha...
Author: mpolacek
Date: Thu May 7 19:36:31 2015
New Revision: 222889
URL: https://gcc.gnu.org/viewcvs?rev=222889&root=gcc&view=rev
Log:
PR c/65179
* c-common.c (c_fully_fold_internal): Warn when left shifting a
negative value.
* c.opt (Wshift-negative-value): New option.
* c-opts.c (c_common_post_options): Set warn_shift_negative_value
when -Wextra and C99/C++11 mode.
* c-typeck.c (build_binary_op): Warn when left shifting a negative
value.
* typeck.c (cp_build_binary_op): Warn when left shifting a negative
value.
* doc/invoke.texi: Document -Wshift-negative-value.
* c-c++-common/Wshift-negative-value-1.c: New test.
* testsuite/c-c++-common/Wshift-negative-value-2.c: New test.
* testsuite/c-c++-common/Wshift-negative-value-3.c: New test.
* testsuite/c-c++-common/Wshift-negative-value-4.c: New test.
* testsuite/c-c++-common/Wshift-negative-value-5.c: New test.
* testsuite/c-c++-common/Wshift-negative-value-6.c: New test.
* testsuite/gcc.dg/c90-left-shift-1.c: New test.
* testsuite/gcc.dg/c99-const-expr-7.c: Add dg-error.
* testsuite/gcc.dg/c99-left-shift-1.c: New test.
Added:
trunk/gcc/testsuite/c-c++-common/Wshift-negative-value-1.c
trunk/gcc/testsuite/c-c++-common/Wshift-negative-value-2.c
trunk/gcc/testsuite/c-c++-common/Wshift-negative-value-3.c
trunk/gcc/testsuite/c-c++-common/Wshift-negative-value-4.c
trunk/gcc/testsuite/c-c++-common/Wshift-negative-value-5.c
trunk/gcc/testsuite/c-c++-common/Wshift-negative-value-6.c
trunk/gcc/testsuite/gcc.dg/c90-left-shift-1.c
trunk/gcc/testsuite/gcc.dg/c99-left-shift-1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-common.c
trunk/gcc/c-family/c-opts.c
trunk/gcc/c-family/c.opt
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-typeck.c
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/typeck.c
trunk/gcc/doc/invoke.texi
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/c99-const-expr-7.c