diff options
| author | Kaveh R. Ghazi <ghazi@caip.rutgers.edu> | 1999-11-30 23:26:37 +0000 |
|---|---|---|
| committer | Kaveh Ghazi <ghazi@gcc.gnu.org> | 1999-11-30 23:26:37 +0000 |
| commit | 48776cde064312d9fd9bac8c3d0fd73be6944255 (patch) | |
| tree | 1d2e79beb5a4999f5868fca5ed690dba7a1f2a64 /gcc | |
| parent | 481c7efae8707188049cf59ad97f682ba68576ce (diff) | |
| download | gcc-48776cde064312d9fd9bac8c3d0fd73be6944255.zip gcc-48776cde064312d9fd9bac8c3d0fd73be6944255.tar.gz gcc-48776cde064312d9fd9bac8c3d0fd73be6944255.tar.bz2 | |
c-lex.c (yylex): With -Wtraditional...
* c-lex.c (yylex): With -Wtraditional, when the ANSI type of an
integer constant does not match the traditional type, limit the
warnings to cases where the base of the type is ten.
* invoke.texi (-Wtraditional): Document it.
From-SVN: r30730
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/c-lex.c | 6 | ||||
| -rw-r--r-- | gcc/invoke.texi | 6 |
3 files changed, 19 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b77d214..e0a454b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +1999-11-30 Kaveh R. Ghazi <ghazi@caip.rutgers.edu> + + * c-lex.c (yylex): With -Wtraditional, when the ANSI type of an + integer constant does not match the traditional type, limit the + warnings to cases where the base of the type is ten. + + * invoke.texi (-Wtraditional): Document it. + Tue Nov 30 15:18:35 1999 Franz Sirl <Franz.Sirl-kernel@lauterbach.com> * combine.c (try_combine): Only pass SET or CLOBBER to SET_DEST diff --git a/gcc/c-lex.c b/gcc/c-lex.c index ab71f78..d4710a8 100644 --- a/gcc/c-lex.c +++ b/gcc/c-lex.c @@ -1901,7 +1901,11 @@ yylex () type = flag_traditional ? traditional_type : ansi_type; - if (warn_traditional && traditional_type != ansi_type) + /* We assume that constants specified in a non-decimal + base are bit patterns, and that the programmer really + meant what they wrote. */ + if (warn_traditional && base == 10 + && traditional_type != ansi_type) { if (TYPE_PRECISION (traditional_type) != TYPE_PRECISION (ansi_type)) diff --git a/gcc/invoke.texi b/gcc/invoke.texi index 567c2a2..f1b06497 100644 --- a/gcc/invoke.texi +++ b/gcc/invoke.texi @@ -1692,6 +1692,12 @@ A @code{switch} statement has an operand of type @code{long}. @item A non-@code{static} function declaration follows a @code{static} one. This construct is not accepted by some traditional C compilers. + +@item +The ANSI type of an integer constant has a different width or +signedness from its traditional type. This warning is only issued if +the base of the constant is ten. I.e. hexadecimal or octal values, which +typically represent bit patterns, are not warned about. @end itemize @item -Wundef |