This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
[patch, fortran, documentation] PR34532 - implicit conversion, Integer as logical
- From: Daniel Franke <franke dot daniel at gmail dot com>
- To: fortran at gcc dot gnu dot org
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Tue, 25 Dec 2007 22:36:48 +0100
- Subject: [patch, fortran, documentation] PR34532 - implicit conversion, Integer as logical
The documentation (5.11) indicates that
$> cat if.f90
INTEGER :: i = 1
IF (i) PRINT *, 'True'
END
is valid in gfortran, but
$> gfortran -g if.f90
In file if.f90:2
IF (i) PRINT *, 'True'
1
Error: ELSE IF clause at (1) requires a scalar LOGICAL expression
As discussed in bugzilla, this is to fix the docs.
2007-12-25 Daniel Franke <franke.daniel@gmail.com>
PR fortran/34532
* gfortran.texi: Fixed section about implicit conversion of logical
and integer variables.
Tested doc, dvi and html targets. Ok for trunk?
Regards
Daniel
Index: gfortran.texi
===================================================================
--- gfortran.texi (revision 131167)
+++ gfortran.texi (working copy)
@@ -1165,12 +1165,17 @@ zero, and @code{.TRUE.} is interpreted a
@code{.FALSE.} and any nonzero value is interpreted as @code{.TRUE.}.
@smallexample
- INTEGER :: i = 1
- IF (i) PRINT *, 'True'
+ LOGICAL :: l
+ l = 1
+@end smallexample
+@smallexample
+ INTEGER :: i
+ i = .TRUE.
@end smallexample
-However, there is no implicit conversion of @code{LOGICAL} and
-@code{INTEGER} values performed during I/O operations.
+However, there is no implicit conversion of @code{INTEGER} values in
+@code{if}-statements, nor of @code{LOGICAL} or @code{INTEGER} values
+in I/O operations.
@node Hollerith constants support
@section Hollerith constants support