diff options
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index e6f503f..a5481b5 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -256,8 +256,8 @@ Objective-C and Objective-C++ Dialects}. -pedantic-errors @gol -w -Wextra -Wall -Waddress -Waggregate-return @gol -Wno-aggressive-loop-optimizations -Warray-bounds -Warray-bounds=@var{n} @gol --Wno-attributes -Wbool-compare -Wno-builtin-macro-redefined @gol --Wc90-c99-compat -Wc99-c11-compat @gol +-Wno-attributes -Wbool-compare -Wbool-operation @gol +-Wno-builtin-macro-redefined -Wc90-c99-compat -Wc99-c11-compat @gol -Wc++-compat -Wc++11-compat -Wc++14-compat -Wcast-align -Wcast-qual @gol -Wchar-subscripts -Wclobbered -Wcomment -Wconditionally-supported @gol -Wconversion -Wcoverage-mismatch -Wno-cpp -Wdangling-else -Wdate-time @gol @@ -3656,6 +3656,7 @@ Options} and @ref{Objective-C and Objective-C++ Dialect Options}. @gccoptlist{-Waddress @gol -Warray-bounds=1 @r{(only with} @option{-O2}@r{)} @gol -Wbool-compare @gol +-Wbool-operation @gol -Wc++11-compat -Wc++14-compat@gol -Wchar-subscripts @gol -Wcomment @gol @@ -4846,6 +4847,17 @@ if ((n > 1) == 2) @{ @dots{} @} @end smallexample This warning is enabled by @option{-Wall}. +@item -Wbool-operation +@opindex Wno-bool-operation +@opindex Wbool-operation +Warn about suspicious operations on expressions of a boolean type. For +instance, bitwise negation of a boolean is very likely a bug in the program. +For C, this warning also warns about incrementing or decrementing a boolean, +which rarely makes sense. (In C++, decrementing a boolean is always invalid. +Incrementing a boolean is invalid in C++1z, and deprecated otherwise.) + +This warning is enabled by @option{-Wall}. + @item -Wduplicated-cond @opindex Wno-duplicated-cond @opindex Wduplicated-cond |