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| author | Kaveh R. Ghazi <ghazi@caip.rutgers.edu> | 2000-07-12 20:15:20 +0000 |
|---|---|---|
| committer | Kaveh Ghazi <ghazi@gcc.gnu.org> | 2000-07-12 20:15:20 +0000 |
| commit | 895ea61453c945cced3974a35173dd58c7753758 (patch) | |
| tree | e7fca6dc3d8c848108c755daa00e7fe40a2c41e3 /gcc | |
| parent | 8364301f5a1725e900f4554f5d9358146c804ee3 (diff) | |
| download | gcc-895ea61453c945cced3974a35173dd58c7753758.zip gcc-895ea61453c945cced3974a35173dd58c7753758.tar.gz gcc-895ea61453c945cced3974a35173dd58c7753758.tar.bz2 | |
c-decl.c (define_label): Warn about identifier conflicts with labels in traditional C.
* c-decl.c (define_label): Warn about identifier conflicts with
labels in traditional C.
* c-parse.in (unop +): Warn about the unary plus operator for
traditional C.
* c-typeck.c (store_init_value): Warn about automatic aggregate
initialization for traditional C.
* invoke.texi (-Wtraditional): Document new warnings.
From-SVN: r34997
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 13 | ||||
| -rw-r--r-- | gcc/c-decl.c | 4 | ||||
| -rw-r--r-- | gcc/c-parse.in | 7 | ||||
| -rw-r--r-- | gcc/c-typeck.c | 4 | ||||
| -rw-r--r-- | gcc/invoke.texi | 10 |
5 files changed, 37 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 2f44e35..079c764 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,16 @@ +2000-07-12 Kaveh R. Ghazi <ghazi@caip.rutgers.edu> + + * c-decl.c (define_label): Warn about identifier conflicts with + labels in traditional C. + + * c-parse.in (unop +): Warn about the unary plus operator for + traditional C. + + * c-typeck.c (store_init_value): Warn about automatic aggregate + initialization for traditional C. + + * invoke.texi (-Wtraditional): Document new warnings. + 2000-07-12 Gabriel Dos Reis <gdr@codesourcery.com> * Makefile.in (c-errors.o): Fix thinko in dependency. diff --git a/gcc/c-decl.c b/gcc/c-decl.c index 619c20c..f212e18 100644 --- a/gcc/c-decl.c +++ b/gcc/c-decl.c @@ -2706,6 +2706,10 @@ define_label (filename, line, name) decl = lookup_label (name); } + if (warn_traditional && lookup_name (name)) + warning ("traditional C lacks a separate namespace for labels, identifier `%s' conflicts", + IDENTIFIER_POINTER (name)); + if (DECL_INITIAL (decl) != 0) { error ("duplicate label `%s'", IDENTIFIER_POINTER (name)); diff --git a/gcc/c-parse.in b/gcc/c-parse.in index 04e160d..87dfceb 100644 --- a/gcc/c-parse.in +++ b/gcc/c-parse.in @@ -411,7 +411,12 @@ unop: '&' | '-' { $$ = NEGATE_EXPR; } | '+' - { $$ = CONVERT_EXPR; } + { $$ = CONVERT_EXPR; +ifc + if (warn_traditional) + warning ("traditional C rejects the unary plus operator"); +end ifc + } | PLUSPLUS { $$ = PREINCREMENT_EXPR; } | MINUSMINUS diff --git a/gcc/c-typeck.c b/gcc/c-typeck.c index bebe4a9..f029764 100644 --- a/gcc/c-typeck.c +++ b/gcc/c-typeck.c @@ -4401,6 +4401,10 @@ store_init_value (decl, init) } #endif + if (warn_traditional + && AGGREGATE_TYPE_P (TREE_TYPE (decl)) && ! TREE_STATIC (decl)) + warning ("traditional C rejects automatic aggregate initialization"); + DECL_INITIAL (decl) = value; /* ANSI wants warnings about out-of-range constant initializers. */ diff --git a/gcc/invoke.texi b/gcc/invoke.texi index e1f2503..95d7435 100644 --- a/gcc/invoke.texi +++ b/gcc/invoke.texi @@ -1824,6 +1824,16 @@ Usage of ANSI string concatenation is detected. @item A function macro appears without arguments. + +@item +The unary plus operator. + +@item +Initialization of automatic aggregates. + +@item +Identifier conflicts with labels. Traditional C lacks a separate +namespace for labels. @end itemize @item -Wundef |