diff options
| author | burnus <burnus@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-04-11 22:43:54 +0000 |
|---|---|---|
| committer | burnus <burnus@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-04-11 22:43:54 +0000 |
| commit | 4012a98606090eeb906fd6d4affb6dc079086f2e (patch) | |
| tree | 393f5424c8fd3418772e0a6d95aebafeafbc5175 /gcc/doc/invoke.texi | |
| parent | baf146020ec28e17d9b8f9e7c886e1e25187249b (diff) | |
| download | gcc-4012a98606090eeb906fd6d4affb6dc079086f2e.tar.gz | |
2014-04-11 Tobias Burnus <burnus@net-b.de>
PR c/60194
gcc/
* doc/invoke.texi (-Wformat-signedness): Document it.
(Wformat=2): Mention that this enables -Wformat-signedness.
gcc/c-family/
* c.opt (Wformat-signedness): Add
* c-format.c(check_format_types): Use it.
gcc/testsuite/
* * g++.dg/warn/warn_format_signedness.C: New.
* gcc.dg/format/warn-signedness.c: New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@209328 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index e2fd4c62c18..860a545d95f 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -246,7 +246,7 @@ Objective-C and Objective-C++ Dialects}. -Wno-endif-labels -Werror -Werror=* @gol -Wfatal-errors -Wfloat-equal -Wformat -Wformat=2 @gol -Wno-format-contains-nul -Wno-format-extra-args -Wformat-nonliteral @gol --Wformat-security -Wformat-y2k @gol +-Wformat-security -Wformat-signedness -Wformat-y2k @gol -Wframe-larger-than=@var{len} -Wno-free-nonheap-object -Wjump-misses-init @gol -Wignored-qualifiers @gol -Wimplicit -Wimplicit-function-declaration -Wimplicit-int @gol @@ -3539,7 +3539,7 @@ The C standard specifies that zero-length formats are allowed. @opindex Wformat=2 Enable @option{-Wformat} plus additional format checks. Currently equivalent to @option{-Wformat -Wformat-nonliteral -Wformat-security --Wformat-y2k}. +-Wformat-signedness -Wformat-y2k}. @item -Wformat-nonliteral @opindex Wformat-nonliteral @@ -3561,6 +3561,12 @@ currently a subset of what @option{-Wformat-nonliteral} warns about, but in future warnings may be added to @option{-Wformat-security} that are not included in @option{-Wformat-nonliteral}.) +@item -Wformat-signedness +@opindex Wformat-signedness +@opindex Wno-format-signedness +If @option{-Wformat} is specified, also warn if the format string +requires an unsigned argument and the argument is signed and vice versa. + @item -Wformat-y2k @opindex Wformat-y2k @opindex Wno-format-y2k |