>Submitter-Id: net
>Originator: Stephen Kennedy
>Organization: Telekinesys Research
>Confidential: no
>Synopsis: Address of 'char' is incorrect.
>Severity: serious
>Priority: medium
>Category: c
>Class: wrong-code
>Release: 3.2.3 20030210 (Debian prerelease) (Debian testing/unstable)
>Environment:
System: Linux stag 2.4.19-686 #1 Thu Aug 8 21:30:09 EST 2002 i686 unknown
Architecture: i686
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,pascal,objc,ada --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info
--with-gxx-include-dir=/usr/include/c++/3.2 --enable-shared --with-system-zlib
--enable-nls --without-included-gettext --enable-__cxa_atexit
--enable-clocale=gnu --enable-java-gc=boehm --enable-objc-gc i386-linux
>Description:
In the example below, '&a' is the address of a local copy of 'a' not of
'a'.
if the type of 'a' is changed to int, it works as expected.
>How-To-Repeat:
#define TA char
#define TB int
#define TC int
void foobar(TA a, TB b, TC c);
int main()
{
foobar(1,2,3);
return 0;
}
void foobar(TA a, TB b, TC c)
{
printf("a == %i claims %x\n", a, &a);
printf("a == %i really %x\n", (&b)[-1], (&b)-1);
printf("b == %i %x\n", b, &b);
printf("c == %i %x\n", c, &c);
}
>Fix:
