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| author | Joseph Myers <jsm28@cam.ac.uk> | 2000-12-07 07:56:44 +0000 |
|---|---|---|
| committer | Joseph Myers <jsm28@gcc.gnu.org> | 2000-12-07 07:56:44 +0000 |
| commit | c907e684899b80f605c6f318ac47d825cefd5e04 (patch) | |
| tree | b5375290ebf0a5a6f82ddbfa46e51e6bde6dbb84 /gcc/c-common.c | |
| parent | 1c248308f49a5410b9e69330a924f264707625d7 (diff) | |
| download | gcc-c907e684899b80f605c6f318ac47d825cefd5e04.zip gcc-c907e684899b80f605c6f318ac47d825cefd5e04.tar.gz gcc-c907e684899b80f605c6f318ac47d825cefd5e04.tar.bz2 | |
c-common.c (warn_format_security): New variable.
* c-common.c (warn_format_security): New variable.
(check_format_info): Warn about non-literal formats with no format
arguments if either -Wformat-nonliteral or -Wformat-security is
specified.
(set_Wformat): Set warn_format_security for settings other than 1.
* c-common.h (warn_format_security): Declare.
* c-decl.c (c_decode_option): Decode -Wformat-security and
-Wno-format-security.
* invoke.texi: Document -Wformat-security.
* toplev.c (documented_lang_options): Include -Wformat-security
and -Wno-format-security.
cp:
* decl2.c (lang_decode_option): Handle -Wformat-security.
testsuite:
* format-sec-1.c: New test.
From-SVN: r38106
Diffstat (limited to 'gcc/c-common.c')
| -rw-r--r-- | gcc/c-common.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/gcc/c-common.c b/gcc/c-common.c index 5e7666a..2baba02 100644 --- a/gcc/c-common.c +++ b/gcc/c-common.c @@ -193,6 +193,10 @@ int warn_format_extra_args; int warn_format_nonliteral; +/* Warn about possible security problems with calls to format functions. */ + +int warn_format_security; + /* Nonzero means warn about possible violations of sequence point rules. */ int warn_sequence_point; @@ -2363,7 +2367,7 @@ check_format_info (status, info, params) params = TREE_CHAIN (params); ++arg_num; } - if (params == 0 && warn_format_nonliteral) + if (params == 0 && (warn_format_nonliteral || warn_format_security)) status_warning (status, "format not a string literal and no format arguments"); else if (warn_format_nonliteral) status_warning (status, "format not a string literal, argument types not checked"); @@ -3401,7 +3405,10 @@ set_Wformat (setting) warn_format_y2k = setting; warn_format_extra_args = setting; if (setting != 1) - warn_format_nonliteral = setting; + { + warn_format_nonliteral = setting; + warn_format_security = setting; + } } /* Print a warning if a constant expression had overflow in folding. |