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| author | Marek Polacek <polacek@redhat.com> | 2015-10-02 12:56:17 +0000 |
|---|---|---|
| committer | Marek Polacek <mpolacek@gcc.gnu.org> | 2015-10-02 12:56:17 +0000 |
| commit | 3e3b8d63e54773e0f5add898ad55acf1be22d950 (patch) | |
| tree | 2068f8ebdec3daf3c4cd446ea0c01a7dfe75c37d /gcc/c-family/c.opt | |
| parent | 0f6ca79c15711e28ea7a6330fc9ac017077fbaad (diff) | |
| download | gcc-3e3b8d63e54773e0f5add898ad55acf1be22d950.zip gcc-3e3b8d63e54773e0f5add898ad55acf1be22d950.tar.gz gcc-3e3b8d63e54773e0f5add898ad55acf1be22d950.tar.bz2 | |
re PR c/64249 (Missing warning for if (A) else if (A))
PR c/64249
* c-common.c (warn_duplicated_cond_add_or_warn): New function.
* c-common.h (warn_duplicated_cond_add_or_warn): Declare.
* c.opt (Wduplicated-cond): New option.
* c-parser.c (c_parser_statement_after_labels): Add CHAIN parameter
and pass it down to c_parser_if_statement.
(c_parser_else_body): Add CHAIN parameter and pass it down to
c_parser_statement_after_labels.
(c_parser_if_statement): Add CHAIN parameter. Add code to warn about
duplicated if-else-if conditions.
* parser.c (cp_parser_statement): Add CHAIN parameter and pass it
down to cp_parser_selection_statement.
(cp_parser_selection_statement): Add CHAIN parameter. Add code to
warn about duplicated if-else-if conditions.
(cp_parser_implicitly_scoped_statement): Add CHAIN parameter and pass
it down to cp_parser_statement.
* doc/invoke.texi: Document -Wduplicated-cond.
* Makefile.in (insn-latencytab.o): Use -Wno-duplicated-cond.
(insn-dfatab.o): Likewise.
* genemit.c (gen_exp): Rewrite condition to avoid -Wduplicated-cond
warning.
* c-c++-common/Wduplicated-cond-1.c: New test.
* c-c++-common/Wduplicated-cond-2.c: New test.
* c-c++-common/Wduplicated-cond-3.c: New test.
* c-c++-common/Wduplicated-cond-4.c: New test.
* c-c++-common/Wmisleading-indentation.c (fn_37): Avoid
-Wduplicated-cond warning.
From-SVN: r228388
Diffstat (limited to 'gcc/c-family/c.opt')
| -rw-r--r-- | gcc/c-family/c.opt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt index b79c143..a79b9f1 100644 --- a/gcc/c-family/c.opt +++ b/gcc/c-family/c.opt @@ -406,6 +406,10 @@ Wdiv-by-zero C ObjC C++ ObjC++ Var(warn_div_by_zero) Init(1) Warning Warn about compile-time integer division by zero +Wduplicated-cond +C ObjC C++ ObjC++ Var(warn_duplicated_cond) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall) +Warn about duplicated conditions in an if-else-if chain + Weffc++ C++ ObjC++ Var(warn_ecpp) Warning Warn about violations of Effective C++ style rules |