diff options
| -rw-r--r-- | gcc/c-decl.c | 9 | ||||
| -rw-r--r-- | gcc/c-tree.h | 4 | ||||
| -rw-r--r-- | gcc/toplev.c | 2 |
3 files changed, 15 insertions, 0 deletions
diff --git a/gcc/c-decl.c b/gcc/c-decl.c index f28b026..65dfa01 100644 --- a/gcc/c-decl.c +++ b/gcc/c-decl.c @@ -541,6 +541,10 @@ int warn_parentheses; int warn_missing_braces; +/* Warn about comparison of signed and unsigned values. */ + +int warn_sign_compare; + /* Nonzero means `$' can be in an identifier. See cccp.c for reasons why this breaks some obscure ANSI C programs. */ @@ -711,6 +715,10 @@ c_decode_option (p) warn_missing_braces = 1; else if (!strcmp (p, "-Wno-missing-braces")) warn_missing_braces = 0; + else if (!strcmp (p, "-Wsign-compare")) + warn_sign_compare = 1; + else if (!strcmp (p, "-Wno-sign-compare")) + warn_sign_compare = 0; else if (!strcmp (p, "-Wall")) { /* We save the value of warn_uninitialized, since if they put @@ -726,6 +734,7 @@ c_decode_option (p) warn_char_subscripts = 1; warn_parentheses = 1; warn_missing_braces = 1; + warn_sign_compare = 1; } else return 0; diff --git a/gcc/c-tree.h b/gcc/c-tree.h index bb90048..4538f4b 100644 --- a/gcc/c-tree.h +++ b/gcc/c-tree.h @@ -477,6 +477,10 @@ extern int warn_parentheses; extern int warn_missing_braces; +/* Warn about comparison of signed and unsigned values. */ + +int warn_sign_compare; + /* Nonzero means this is a function to call to perform comptypes on two record types. */ diff --git a/gcc/toplev.c b/gcc/toplev.c index 4690f16..052f703 100644 --- a/gcc/toplev.c +++ b/gcc/toplev.c @@ -639,6 +639,8 @@ char *lang_options[] = "-Wno-pointer-arith", "-Wredundant-decls", "-Wno-redundant-decls", + "-Wsign-compare", + "-Wno-sign-compare", "-Wstrict-prototypes", "-Wno-strict-prototypes", "-Wtraditional", |