gcc 4.6 doesn't provide ptrdiff_t type

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$ make
g++ -o obj/util/arena.o -Wall -O3 -g -pthread   -Wno-sign-compare -c -I.    
-DNDEBUG util/arena.cc
g++ -o obj/util/hash.o -Wall -O3 -g -pthread   -Wno-sign-compare -c -I.    
-DNDEBUG util/hash.cc
g++ -o obj/util/rune.o -Wall -O3 -g -pthread   -Wno-sign-compare -c -I.    
-DNDEBUG util/rune.cc
g++ -o obj/util/stringpiece.o -Wall -O3 -g -pthread   -Wno-sign-compare -c -I.  
  -DNDEBUG util/stringpiece.cc
In file included from util/stringpiece.cc:5:0:
./re2/stringpiece.h:120:11: error: ‘ptrdiff_t’ does not name a type
make: *** [obj/util/stringpiece.o] Error 1
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.6.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /build/src/gcc-4.6.0/configure --prefix=/usr --libdir=/usr/lib 
--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info 
--with-bugurl=https://bugs.archlinux.org/ 
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared 
--enable-threads=posix --with-system-zlib --enable-__cxa_atexit 
--disable-libunwind-exceptions --enable-clocale=gnu --enable-gnu-unique-object 
--enable-linker-build-id --with-ppl --enable-cloog-backend=isl --enable-lto 
--enable-gold --enable-ld=default --enable-plugin --with-plugin-ld=ld.gold 
--disable-multilib --disable-libstdcxx-pch --enable-checking=release
Thread model: posix
gcc version 4.6.0 (GCC)

It works if I change stringpiece.h to use std::ptrdiff_t.

Original issue reported on code.google.com by dgl...@gmail.com on 9 Apr 2011 at 4:51

[GoogleCodeExporter]

This patch fixes it.

Original comment by bique.al...@gmail.com on 25 Apr 2011 at 12:26

Attachments:

• patch

[GoogleCodeExporter]

Original comment by rsc@swtch.com on 1 May 2011 at 7:13

• Changed state: Fixed