Bug#798526: cfortran: PPSTRING arguments give unused parameter warning

[Thomas Jahns]

Package: cfortran
Version: 4.4-14
Severity: minor
Tags: patch

Dear Maintainer,

when compiling sources which use PPSTRING arguments, one receives a warning
about an unused argument. This is because Fortran passes CHARACTER arguments
with a count, but because of the way PPSTRING works, this is discarded.

The following patch solves this problem by replacing the plain passing of only
the pointer by an expression that uses a well established idiom to suppress
unused argument warning while having no other effect.

Regards, Thomas

--- a/cfortran.h        2015-09-10 11:19:38.628955692 +0200
+++ b/cfortran.h        2015-09-10 11:20:46.642443275 +0200
@@ -2218,7 +2218,7 @@
 #define         STRING_cfT(M,I,A,B,D)  TTTTSTR( A,B,D)
 #define        STRINGV_cfT(M,I,A,B,D)  TTTTSTRV(A,B,D,
num_elem(A,D,_3(M,_STRV_A,I)))
 #define        PSTRING_cfT(M,I,A,B,D)    TTSTR( A,B,D)
-#define       PPSTRING_cfT(M,I,A,B,D)           A
+#define       PPSTRING_cfT(M,I,A,B,D)           ((void)D, A)
 #endif
 #endif
 #define       PNSTRING_cfT(M,I,A,B,D)    STRING_cfT(M,I,A,B,D)



-- System Information:
Debian Release: 7.9
  APT prefers oldstable
  APT policy: (900, 'oldstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.0-0.bpo.4-amd64 (SMP w/16 CPU cores)
Locale: LANG=C, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

cfortran depends on no packages.

Versions of packages cfortran recommends:
ii  gcc [c-compiler]             4:4.7.2-1
ii  gcc-3.4 [c-compiler]         3.4.6-5
ii  gcc-4.4 [c-compiler]         4.4.7-2
ii  gcc-4.6 [c-compiler]         4.6.3-14
ii  gcc-4.7 [c-compiler]         4.7.2-5
ii  gfortran [fortran-compiler]  4:4.7.2-1

cfortran suggests no packages.

-- no debconf information