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From: "andre.mccurdy at linaro dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug preprocessor/63662] New: __has_include defined but not implemented
Date: Mon, 27 Oct 2014 23:52:00 -0000 [thread overview]
Message-ID: <bug-63662-4@http.gcc.gnu.org/bugzilla/> (raw)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63662
Bug ID: 63662
Summary: __has_include defined but not implemented
Product: gcc
Version: 4.9.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: preprocessor
Assignee: unassigned at gcc dot gnu.org
Reporter: andre.mccurdy at linaro dot org
Issue seen with Linaro GCC 4.9-2014.10, but believed to also be present in
upstream gcc 4.9.x
$ i586-rdk-linux-gcc -v
Using built-in specs.
COLLECT_GCC=i586-rdk-linux-gcc
COLLECT_LTO_WRAPPER=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux/usr/libexec/i586-rdk-linux/gcc/i586-rdk-linux/4.9.2/lto-wrapper
Target: i586-rdk-linux
Configured with:
/home/andre/rdk/rdk-master/build-qemux86/tmp/work-shared/gcc-linaro-4.9-r2014.10/gcc-linaro-4.9-2014.10/configure
--build=x86_64-linux --host=x86_64-linux --target=i586-rdk-linux
--prefix=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux/usr
--exec_prefix=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux/usr
--bindir=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux/usr/bin/i586-rdk-linux
--sbindir=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux/usr/bin/i586-rdk-linux
--libexecdir=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux/usr/libexec/i586-rdk-linux
--datadir=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux/usr/share
--sysconfdir=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux/etc
--sharedstatedir=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux/com
--localstatedir=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux/var
--libdir=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux/usr/lib/i586-rdk-linux
--includedir=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux/usr/include
--oldincludedir=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux/usr/include
--infodir=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux/usr/share/info
--mandir=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux/usr/share/man
--disable-silent-rules --disable-dependency-tracking
--with-libtool-sysroot=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux
--enable-clocale=generic --with-gnu-ld --enable-shared --enable-languages=c,c++
--enable-threads=posix --disable-multilib --enable-c99 --enable-long-long
--enable-symvers=gnu --enable-libstdcxx-pch --program-prefix=i586-rdk-linux-
--without-local-prefix --enable-target-optspace --enable-lto --enable-libssp
--disable-bootstrap --disable-libmudflap --with-system-zlib
--with-linker-hash-style=gnu --enable-linker-build-id --with-ppl=no
--with-cloog=no --enable-checking=release --enable-cheaders=c_global
--with-gxx-include-dir=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/qemux86/usr/include/c++/4.9.2
--with-sysroot=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/qemux86
--with-build-sysroot=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/qemux86
--enable-targets=all --enable-poison-system-directories
--with-mpfr=/home/andre/rdk/rdk-master/build-qemux86/tmp/sysroots/x86_64-linux/usr
--with-system-zlib --disable-nls --enable-__cxa_atexit
Thread model: posix
gcc version 4.9.2 20141013 (prerelease) (Linaro GCC 4.9-2014.10)
Issue originally seen when building Qt 5.4 alpha1, which includes references to
__has_include such as:
https://qt.gitorious.org/qt/qtbase/source/8e512fbe0b0f99d80d0cf60cd6187a9a9a5a3eb9:src/corelib/global/qlogging.cpp#L77
Minimal testcase:
$ cat tst.c
#ifdef __has_include
# if __has_include(<stdio.h>)
# include <stdio.h>
# endif
#endif
$ i586-rdk-linux-gcc -c tst.c
tst.c:2:7: error: missing binary operator before token "("
# if __has_include(<stdio.h>)
^
Related gcc-4_9-branch check-in ( SVN r215998 ):
https://gcc.gnu.org/viewcvs/gcc?limit_changes=0&view=revision&revision=215998
next reply other threads:[~2014-10-27 23:48 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-27 23:52 andre.mccurdy at linaro dot org [this message]
2014-10-27 23:58 ` [Bug preprocessor/63662] " pinskia at gcc dot gnu.org
2014-10-28 0:20 ` pinskia at gcc dot gnu.org
2014-10-28 7:11 ` [Bug preprocessor/63662] __has_include is not implemented but it is defined, so "#ifdef __has_include" guards are ineffective in blocking usage of __has_include andre.mccurdy at linaro dot org
2014-10-28 8:59 ` rguenth at gcc dot gnu.org
2014-10-29 8:46 ` jakub at gcc dot gnu.org
2014-10-29 19:54 ` andre.mccurdy at linaro dot org
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