奇怪的gcc错误:在程序中迷路'\ NNN'

Question

我的开源库中出现了以下问题,我无法弄清楚发生了什么.

我的两个用户有(gcc)编译器错误,如下所示:

/home/someone/Source/src/._regex.cpp:1:1: warning: null character(s) ignored
/home/someone/Source/src/._regex.cpp:1: error: stray ‘\5’ in program
/home/someone/Source/src/._regex.cpp:1: error: stray ‘\26’ in program
/home/someone/Source/src/._regex.cpp:1: error: stray ‘\7’ in program
/home/someone/Source/src/._regex.cpp:1:5: warning: null character(s) ignored
/home/someone/Source/src/._regex.cpp:1: error: stray ‘\2’ in program
...

我无法重现这些错误; 代码在我测试过的所有机器上编译得很好.

谷歌搜索似乎表明这通常是奇怪的编码或奇怪的格式化的结果,但我通过十六进制编辑器运行所有源,并且所有字符都是可打印的ASCII(0x20 - 0x7E),或制表符或换行符.而已.

此外,两个用户都成功编译了以前版本的库; 但是问题(regex.cpp)及其头文件中的特定文件从那时起就没有被修改过!

有关详细信息,请参阅此处,包括下载代码的链接(如果需要).但是我会对可能方向上的指针感到高兴.

Answer 1

错误是._regex.cpp,而不是regex.cpp.盯着的文件._由MacOS自动生成.您的构建系统似乎尝试编译以.cpp结尾的所有文件.它可能不应该以点开头编译任何东西.

Answer 2

Baffe Boyois得到了正确的答案 - 你的CMake规则必须做得太多.

在MacOS X 10.5.8(Leopard)上,我得到:

Osiris JL: cmake ..
-- The C compiler identification is GNU
-- The CXX compiler identification is GNU
-- Check for working C compiler: /usr/bin/gcc
-- Check for working C compiler: /usr/bin/gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/jleffler/tmp/yaml-cpp-0.2.3/build
Osiris JL: make
Scanning dependencies of target yaml-cpp
[  2%] Building CXX object CMakeFiles/yaml-cpp.dir/src/._conversion.cpp.o
/tmp/yaml-cpp-0.2.3/src/._conversion.cpp:1:1: warning: null character(s) ignored
/tmp/yaml-cpp-0.2.3/src/._conversion.cpp:1: error: stray ‘\5’ in program
/tmp/yaml-cpp-0.2.3/src/._conversion.cpp:1: error: stray ‘\22’ in program
/tmp/yaml-cpp-0.2.3/src/._conversion.cpp:1: error: stray ‘\7’ in program
/tmp/yaml-cpp-0.2.3/src/._conversion.cpp:1:5: warning: null character(s) ignored
/tmp/yaml-cpp-0.2.3/src/._conversion.cpp:1: error: stray ‘\2’ in program
/tmp/yaml-cpp-0.2.3/src/._conversion.cpp:1:7: warning: null character(s) ignored
/tmp/yaml-cpp-0.2.3/src/._conversion.cpp:1:17: warning: null character(s) ignored
...

你应该列出你需要编译的文件; 你不应该只编译所有和杂项.

问题似乎在CMakeLists.txt中:

file(GLOB public_headers include/*.h)
file(GLOB private_headers src/*.h)
file(GLOB sources src/*.cpp)

要么CMake GLOB有点过于热情(我使用的是版本2.6-patch 4),要么在你的任何客户使用MacOS X时都无法使用它.

GLOB正在扩展以包含以"."开头的文件.是任何人的猜测; 我倾向于将它视为cmake中的一个错误.

但是,作为一种解决方法,我编辑了CMakeLists.txt并使其工作:

file(GLOB public_headers include/[a-z]*.h)
file(GLOB private_headers src/[a-z]*.h)
file(GLOB sources src/[a-z]*.cpp)

这不是完整的解决方案:我在yaml-reader目录中遇到了问题的延续.我以基本相同的方式修改了yaml-reader/CMakeLists.txt文件.

FWIW:

$ file ._*
._conversion.cpp: AppleDouble encoded Macintosh file
._exp.cpp:        AppleDouble encoded Macintosh file
._map.cpp:        AppleDouble encoded Macintosh file
._map.h:          AppleDouble encoded Macintosh file
._node.cpp:       AppleDouble encoded Macintosh file
._null.cpp:       AppleDouble encoded Macintosh file
._ostream.cpp:    AppleDouble encoded Macintosh file
._parser.cpp:     AppleDouble encoded Macintosh file
._regex.cpp:      AppleDouble encoded Macintosh file
._regeximpl.h:    AppleDouble encoded Macintosh file
._scanner.cpp:    AppleDouble encoded Macintosh file
._scanner.h:      AppleDouble encoded Macintosh file
._scanscalar.cpp: AppleDouble encoded Macintosh file
._scanscalar.h:   AppleDouble encoded Macintosh file
._sequence.cpp:   AppleDouble encoded Macintosh file
._simplekey.cpp:  AppleDouble encoded Macintosh file
._stream.cpp:     AppleDouble encoded Macintosh file
._token.h:        AppleDouble encoded Macintosh file
$ odx ._con*.cpp 
0x0000: 00 05 16 07 00 02 00 00 4D 61 63 20 4F 53 20 58   ........Mac OS X
0x0010: 20 20 20 20 20 20 20 20 00 02 00 00 00 09 00 00           ........
0x0020: 00 32 00 00 00 79 00 00 00 02 00 00 00 AB 00 00   .2...y..........
0x0030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
*
0x0050: 00 00 00 00 41 54 54 52 00 3C E0 2B 00 00 00 AB   ....ATTR.<.+....
0x0060: 00 00 00 9C 00 00 00 0F 00 00 00 00 00 00 00 00   ................
0x0070: 00 00 00 00 00 00 00 01 00 00 00 9C 00 00 00 0F   ................
0x0080: 00 00 17 63 6F 6D 2E 61 70 70 6C 65 2E 54 65 78   ...com.apple.Tex
0x0090: 74 45 6E 63 6F 64 69 6E 67 00 00 00 55 54 46 2D   tEncoding...UTF-
0x00A0: 38 3B 31 33 34 32 31 37 39 38 34                  8;134217984
0x00AB:
$

一个奇怪的细节 - 'src'目录中的一些文件没有影子文件.当我'tar -tvf yaml-cpp-0.2.3.tar.gz'时,我看到源附带的文件:

Osiris JL: tar -tvf yaml-cpp-0.2.3.tar.gz
drwxr-xr-x beder/staff       0 2009-10-22 15:13:52 ./
-rw-r--r-- beder/staff    1750 2009-10-22 15:09:05 ./CMakeLists.txt
drwxr-xr-x beder/staff       0 2009-10-19 16:40:15 ./include/
-rw-r--r-- beder/staff     171 2009-09-06 13:41:54 ./include/._conversion.h
-rw-r--r-- beder/staff    1118 2009-09-06 13:41:54 ./include/conversion.h
-rw-r--r-- beder/staff     302 2009-07-29 15:25:23 ./include/crt.h
-rw-r--r-- beder/staff    2254 2009-10-19 16:40:14 ./include/emitter.h
-rw-r--r-- beder/staff    1660 2009-10-19 16:40:14 ./include/emittermanip.h
-rw-r--r-- beder/staff     171 2009-08-18 22:07:22 ./include/._exceptions.h
-rw-r--r-- beder/staff    5638 2009-08-18 22:07:22 ./include/exceptions.h
-rw-r--r-- beder/staff     765 2009-07-29 15:25:23 ./include/iterator.h
-rw-r--r-- beder/staff     444 2009-07-29 15:25:23 ./include/mark.h
-rw-r--r-- beder/staff     171 2009-09-06 12:25:12 ./include/._node.h
-rw-r--r-- beder/staff    3467 2009-09-06 12:25:12 ./include/node.h
-rw-r--r-- beder/staff     171 2009-09-15 20:54:20 ./include/._nodeimpl.h
...
-rw-r--r-- beder/staff     171 2009-07-29 21:28:26 ./include/._yaml.h
-rw-r--r-- beder/staff     321 2009-07-29 21:28:26 ./include/yaml.h
-rw-r--r-- beder/staff     167 2009-09-05 16:01:06 ./._install.txt
-rw-r--r-- beder/staff     652 2009-09-05 16:01:06 ./install.txt
-rw-r--r-- beder/staff    1073 2009-05-29 19:31:21 ./license.txt
drwxr-xr-x beder/staff       0 2009-10-22 14:49:11 ./src/
-rw-r--r-- beder/staff    1697 2009-08-24 16:28:46 ./src/aliascontent.cpp
-rw-r--r-- beder/staff    1171 2009-08-24 16:28:46 ./src/aliascontent.h
-rw-r--r-- beder/staff     112 2009-05-29 19:31:21 ./src/content.cpp
-rw-r--r-- beder/staff    1557 2009-08-24 16:28:46 ./src/content.h
-rw-r--r-- beder/staff     171 2009-09-06 13:31:56 ./src/._conversion.cpp
-rw-r--r-- beder/staff    2027 2009-09-06 13:31:56 ./src/conversion.cpp
...

因此,恶意文件随产品tar文件一起提供.你被某处感染了 - 不确定如何.