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[Bug fortran/35348] New: g77 fails to warn critical real/complex assignment errors
- From: "ohyeahq at yahoo dot co dot jp" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 24 Feb 2008 10:02:40 -0000
- Subject: [Bug fortran/35348] New: g77 fails to warn critical real/complex assignment errors
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
Dear Fortrunners:
The following code has two very common errors, but complies without errors or
warnings: (1) a complex-to-real assignment without explicit REALPART(); (2) a
subroutine call with an erroneous real-array arg in place of a complex-arrray
arg.
PROGRAM TESTCMPL
IMPLICIT NONE
REAL R,RA(2)
COMPLEX C
C=COMPLEX(1.0,1.0)
R=C
WRITE(*,*) 'C=',C,' -> R=',R
RA(1)=1.0
RA(2)=2.0
WRITE(*,*) 'CALLS AS:',RA(1),RA(2)
CALL ARRAY(RA)
STOP
END
SUBROUTINE ARRAY(CA)
IMPLICIT NONE
COMPLEX CA(2)
WRITE(*,*) 'CALLED AS:',CA(1),CA(2)
RETURN
END
Here is the console output:
>g77 -mno-cygwin -O -fbounds-check -ftrapv -W -Wall -Wsurprising -pedantic -o testcmpl.exe testcmpl.f
>testcmpl
C= (1.,1.) -> R= 1.
CALLS AS: 1. 2.
CALLED AS: (1.,2.) (7.72198524E+033,1.)
g77 should give errors or warnings, because these errors are very common in
real life. I suffered for one week locating these :-)
Cheeeeeers
--
Summary: g77 fails to warn critical real/complex assignment
errors
Product: gcc
Version: 3.4.4
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ohyeahq at yahoo dot co dot jp
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35348