[aspectc-user] extern "C" parsing problem.

[Guilherme .]

Hi!

I have a header file "stdio.h" that has many lines in the format

__externC argument fn(params) __THROW;

__externC expands to extern  "C" (as expected) and __THROW to throw() but on
some lines i get the message:

ecos/install/include/cyg/libc/stdio/stdio.h:155: error: invalid declaration
near token `"C"'

This is weird since for some lines there are no problem and on other it
complains...

Here is what i mean:

Excerpt from stdio.h

145 __externC FILE *
146 fopen( const char * /* filename */, const char * /* mode */ ) __THROW;
147
148 __externC FILE *
149 freopen( const char * /* filename */, const char * /* mode */,
150          FILE * /* stream */ ) __THROW;
151
152 __externC void
153 setbuf( FILE * /* stream */, char * /* buffer */ ) __THROW;
154
155 __externC int
156 setvbuf( FILE * /* stream */, char * /* buffer */, int /* mode */,
157          size_t /* size */ ) __THROW;
158
159
//========================================================================
160
161 // ISO C89 7.9.6 Formatted input/output functions
162
163 __externC int
164 fprintf( FILE * /* stream */, const char * /* format */, ... ) __THROW
165     CYGBLD_ATTRIB_PRINTF_FORMAT(2, 3);
166
167 __externC int
168 fscanf( FILE * /* stream */, const char * /* format */, ... ) __THROW
169     CYGBLD_ATTRIB_SCANF_FORMAT(2, 3);
170
171 __externC int
172 printf( const char * /* format */, ... ) __THROW
173     CYGBLD_ATTRIB_PRINTF_FORMAT(1, 2);
174
175 __externC int
176 scanf( const char * /* format */, ... ) __THROW
177     CYGBLD_ATTRIB_SCANF_FORMAT(1, 2);
178
179 __externC int
180 sprintf( char * /* str */, const char * /* format */, ... ) __THROW
181     CYGBLD_ATTRIB_PRINTF_FORMAT(2, 3);
182
183 __externC int
184 sscanf( const char * /* str */, const char * /* format */, ... ) __THROW
185     CYGBLD_ATTRIB_SCANF_FORMAT(2, 3);
186
187 __externC int
188 vfprintf( FILE * /* stream */, const char * /* format */,
189           va_list /* args */ ) __THROW CYGBLD_ATTRIB_PRINTF_FORMAT(2,
0);
190

and the error message from ac++:

ag++ -v9 --c_compiler i386-elf-g++   -o build/main.o main.cpp -c
-I./ecos/install/include -I.
-I/opt/sigubufo/branch/tools/gnutools/i386-elf/lib/gcc-lib/i386-elf/3.2.1/include/
-Wall -Wpointer-arith -Wstrict-prototypes -Wundef -Woverloaded-virtual
-Wno-write-strings -g -O2 -ffunction-sections -fdata-sections -fno-rtti
-fno-exceptions -D_KERNEL
*
*
* AG++ Configuration:
*   Aspect C++ weaver:  ac++
*   C++ compiler:       i386-elf-g++
*   Files:               main.cpp
*   Options (G++):       -v -o "build/main.o"  -I "."  -c -I
"./ecos/install/include"  -I "."  -I
"/opt/sigubufo/branch/tools/gnutools/i386-elf/lib/gcc-lib/i386-elf/3.2.1/include/"
-Wall -Wpointer-arith -Wstrict-prototypes -Wundef -Woverloaded-virtual
-Wno-write-strings -g -O2 -ffunction-sections -fdata-sections -fno-rtti
-fno-exceptions -D "_KERNEL"
*   Options (AC++):      -v9 -I "./ecos/install/include"  -I "."  -I
"/opt/sigubufo/branch/tools/gnutools/i386-elf/lib/gcc-lib/i386-elf/3.2.1/include/"
-D "_KERNEL"  -p.
*   Options (total):     -v9 -v -o "build/main.o"  main.cpp -I "."  -c -I
"./ecos/install/include"  -I "."  -I
"/opt/sigubufo/branch/tools/gnutools/i386-elf/lib/gcc-lib/i386-elf/3.2.1/include/"
-Wall -Wpointer-arith -Wstrict-prototypes -Wundef -Woverloaded-virtual
-Wno-write-strings -g -O2 -ffunction-sections -fdata-sections -fno-rtti
-fno-exceptions -D "_KERNEL"  -p.
*   PumaConfig: 1 Weave: 1 Compile: 1 Link: 0
*
*
* Generating Puma configuration file
  - Parsing output of g++ compiler
  - Executing: "i386-elf-g++"  -Wall -Wpointer-arith -Wstrict-prototypes
-Wundef -Woverloaded-virtual -Wno-write-strings -g -O2 -ffunction-sections
-fdata-sections -fno-rtti -fno-exceptions -E -dM -v -x c++ "/dev/null"
2>/tmp/agxx_stderrC5cftH 1>/tmp/agxx_stdoutEn4tHb
  - Exit: Success
  - removing temporary file: /tmp/agxx_stdoutEn4tHb
  - removing temporary file: /tmp/agxx_stderrC5cftH
  - Writing puma configuration file '/tmp/agxx_pcfg2cXLVF'
* Weaving
  - Executing: "ac++" --config "/tmp/agxx_pcfg2cXLVF"  -v9 -I
"./ecos/install/include"  -I "."  -I
"/opt/sigubufo/branch/tools/gnutools/i386-elf/lib/gcc-lib/i386-elf/3.2.1/include/"
-D "_KERNEL"  -p. -c "main.cpp" -o "/tmp/main.cpp_agxx_2Dhk1d"
* Running ac++ 1.0
* Handling Translation Unit `main.cpp'.
  - Path "main.cpp"
  - Inserting namespace AC
  - Parsing ...
ecos/install/include/cyg/libc/stdio/stdio.h:155: error: invalid declaration
near token `"C"'
ecos/install/include/cyg/libc/stdio/stdio.h:187: error: invalid declaration
near token `"C"'
ecos/install/include/cyg/libc/stdio/stdio.h:191: error: invalid declaration
near token `"C"'
ecos/install/include/cyg/libc/stdio/stdio.h:195: error: invalid declaration
near token `"C"'
ecos/install/include/cyg/libc/stdio/stdio.h:247: error: invalid declaration
near token `"C"'

as one can see he does only complain for some of the lines (until line 155
he is happy about all those __externC), not all...

Is there a way i can further narrow down this problem?

Best regards,
Guilherme
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