Unsolicited warnings

[Enrico Scholz]

While compiling the code shown below, g++ gives out a warning
"straits.h:86: warning: ANSI C++ forbids variable-size array `a'" whose
origin I can not understand and which I like to suppress. AFAIK
variable-sized arrays are an extension and should not be criticized
there. I have tried to prefix straits.h:86 with __extension__ too but it
doesn't help.


------- warning.cc -------
#include <string>

std::basic_string<unsigned char> foo()  { return 0; }
--------------------------


$ g++ -v --save-temps -pedantic -c ~/tmp/warning.cc

Reading specs from /usr/lib/gcc-lib/i686-redhat-linux/2.95.2/specs
gcc version 2.95.2 19991024 (release)
 /usr/lib/gcc-lib/i686-redhat-linux/2.95.2/cpp -lang-c++ -v -D__GNUC__=2 -D__GNUG__=2 -D__GNUC_MINOR__=95 -D__cplusplus -D__ELF__ -Dunix -D__i386__ -Dlinux -D__ELF__ -D__unix__ -D__i386__ -D__linux__ -D__unix -D__linux -Asystem(posix) -D__EXCEPTIONS -pedantic -Acpu(i386) -Amachine(i386) -Di386 -D__i386 -D__i386__ -Di686 -Dpentiumpro -D__i686 -D__i686__ -D__pentiumpro -D__pentiumpro__ /home/ensc/tmp/warning.cc warning.ii
GNU CPP version 2.95.2 19991024 (release) (i386 Linux/ELF)
#include "..." search starts here:
#include <...> search starts here:
 /usr/lib/gcc-lib/i686-redhat-linux/2.95.2/../../../../include/g++-3
 /usr/local/include
 /usr/lib/gcc-lib/i686-redhat-linux/2.95.2/include
 /usr/include
End of search list.
The following default directories have been omitted from the search path:
 /usr/lib/gcc-lib/i686-redhat-linux/2.95.2/../../../../i686-redhat-linux/include
End of omitted list.
 /usr/lib/gcc-lib/i686-redhat-linux/2.95.2/cc1plus warning.ii -quiet -dumpbase warning.cc -pedantic -version -o warning.s
GNU C++ version 2.95.2 19991024 (release) (i686-redhat-linux) compiled by GNU C version 2.95.2 19991024 (release).
/usr/lib/gcc-lib/i686-redhat-linux/2.95.2/../../../../include/g++-3/std/straits.h: In function `static unsigned char * string_char_traits<unsigned char>::move(unsigned char *, const unsigned char *, unsigned int)':
/usr/lib/gcc-lib/i686-redhat-linux/2.95.2/../../../../include/g++-3/std/bastring.cc:147:   instantiated from `basic_string<unsigned char,string_char_traits<unsigned char>,__default_alloc_template<true,0> >::Rep::move(unsigned int, const unsigned char *, unsigned int)'
/usr/lib/gcc-lib/i686-redhat-linux/2.95.2/../../../../include/g++-3/std/bastring.cc:172:   instantiated from `basic_string<unsigned char,string_char_traits<unsigned char>,__default_alloc_template<true,0> >::replace(unsigned int, unsigned int, const unsigned char *, unsigned int)'
/usr/lib/gcc-lib/i686-redhat-linux/2.95.2/../../../../include/g++-3/std/bastring.h:215:   instantiated from here
/usr/lib/gcc-lib/i686-redhat-linux/2.95.2/../../../../include/g++-3/std/straits.h:86: warning: ANSI C++ forbids variable-size array `a'
 as -V -Qy -o warning.o warning.s
GNU assembler version 2.9.5 (i686-redhat-linux) using BFD version 2.9.5.0.22

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