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| author | Brooks Moses <bmoses@stanford.edu> | 2006-10-01 00:51:21 +0000 |
|---|---|---|
| committer | Steven G. Kargl <kargl@gcc.gnu.org> | 2006-10-01 00:51:21 +0000 |
| commit | da1e2517fa43519a38a32be959acccafd7f67f02 (patch) | |
| tree | 94929706483e2339daf4f1c17b2cd54be73abfb9 /gcc/fortran/invoke.texi | |
| parent | 04652d6c8d35b508002e2faad2ab0b5eebd4c8ff (diff) | |
| download | gcc-da1e2517fa43519a38a32be959acccafd7f67f02.zip gcc-da1e2517fa43519a38a32be959acccafd7f67f02.tar.gz gcc-da1e2517fa43519a38a32be959acccafd7f67f02.tar.bz2 | |
invoke.texi: Add mention of BOZ constants and integer overflow to -fno-range-check.
2006-09-30 Brooks Moses <bmoses@stanford.edu>
* invoke.texi: Add mention of BOZ constants and integer
overflow to -fno-range-check.
* fortran.texi: Add mention of -fno-range-check to
section on BOZ contants.
From-SVN: r117342
Diffstat (limited to 'gcc/fortran/invoke.texi')
| -rw-r--r-- | gcc/fortran/invoke.texi | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/fortran/invoke.texi b/gcc/fortran/invoke.texi index 7b8036c..e0a0c47 100644 --- a/gcc/fortran/invoke.texi +++ b/gcc/fortran/invoke.texi @@ -315,7 +315,10 @@ Enable range checking on results of simplification of constant expressions during compilation. For example, by default, @command{gfortran} will give an overflow error at compile time when simplifying @code{a = EXP(1000)}. With @samp{-fno-range-check}, no error will be given and the variable @code{a} -will be assigned the value @code{+Infinity}. +will be assigned the value @code{+Infinity}. Similarly, +@code{DATA i/Z'FFFFFFFF'/} will result in an integer overflow on most systems, +but with @samp{-fno-range-check} the value will ``wrap around'' and @code{i} +will be initialized to @math{-1} instead. @cindex -std=@var{std} option @cindex option, -std=@var{std} |