>Submitter-Id: net
>Originator: Petter Reinholdtsen
>Organization: Hungry Programmers
>Confidential: no
>Synopsis: #pragma warnings are "invisible"
>Severity: serious
>Priority: low
>Category: <choose from the top of this file (one line)>
>Class: change-request
>Release: 3.0.2 20010825 (Debian prerelease) (Debian testing/unstable)
>Environment:
System: Linux zoot 2.4.6-686-smp #1 SMP Thu Jul 5 22:06:27 EST 2001 i686
unknownArchitecture: i686
<machine, os, target, libraries (multiple lines)>
host: i386-pc-linux-gnu
build: i386-pc-linux-gnu
target: i386-pc-linux-gnu
configured with: ../src/configure -v
--enable-languages=c,c++,java,f77,proto,objc --prefix=/usr
--infodir=/share/info --mandir=/share/man --enable-shared --with-gnu-as
--with-gnu-ld --with-system-zlib --enable-long-long --enable-nls
--without-included-gettext --disable-checking --enable-threads=posix
--enable-java-gc=boehm --with-cpp-install-dir=bin --enable-objc-gc i386-linux
>Description:
We are compiling the same program using GCC, Compaq C++, SUN
Forte and M$ Visual C++, and want to be able to insert
'warnings' into the code in a common way. At the moment all
'common' code uses '#pragma WARNING("warning"), but these
messages are not displayed when using gcc. The GCC extention
'#warning' is illegal on all the other compilers. Would it be
possible to change gcc to display the content of an unknown
#pragma. At the moment the following file (compiled with
-Wall)
#pragma WARNING "This is a pragma warning"
#pragma WARNING("This is a pragma warning ()")
#warning "This is a GNU C warning"
produces the following messages:
pragmawarn.c:1: warning: ignoring #pragma WARNING
pragmawarn.c:2: warning: ignoring #pragma WARNING
pragmawarn.c:3:2: warning: #warning "This is a GNU C warning"
Could this be changed to display the content of the pragma,
for instance like this:
pragmawarn.c:1: warning: ignoring #pragma WARNING "This is a
pragma warning"
pragmawarn.c:2: warning: ignoring #pragma WARNING("This is a
pragma warning ()")
pragmawarn.c:3:2: warning: #warning "This is a GNU C warning"
This would make GCC much more useful for our purpose.
The Compaq C++ handle the warnings like this, and it works
just fine for us. :-)
>How-To-Repeat:
<When reporting a compiler error, preprocessor output must be included>
>Fix:
<how to correct or work around the problem, if known (multiple lines)>
