On Sep 26, 2006, at 5:48 PM, Ian Lance Taylor wrote:
So I don't understand what the issue is. Can you give an example?
mrs $ cat subdirectory/limits.h
//
// bogus limits.h header should never be included
//
#error "including limits.h from the wrong place"
mrs $ gcc -iquotesubdirectory t.c
In file included from /usr/lib/gcc/powerpc-apple-darwin8/4.0.1/include/
syslimits.h:7,
from /usr/lib/gcc/powerpc-apple-darwin8/4.0.1/
include/limits.h:11,
from t.c:1:
subdirectory/limits.h:5:2: error: #error "including limits.h from the
wrong place"
mrs $ gcc -iquotesubdirectory -I- t.c -c
cc1: note: obsolete option -I- used, please use -iquote instead
mrs $ cat t.c
#include <limits.h>
Here, you can see the right limits.h file is included from t.c, as
we'd expect, but that the wrong one is included from syslimits.h:
$ gcc -iquotesubdirectory t.c -E
# 1 "t.c"
# 1 "<built-in>"
# 1 "<command line>"
# 1 "t.c"
# 1 "/usr/lib/gcc/powerpc-apple-darwin8/4.0.1/include/limits.h" 1 3 4
# 11 "/usr/lib/gcc/powerpc-apple-darwin8/4.0.1/include/limits.h" 3 4
# 1 "/usr/lib/gcc/powerpc-apple-darwin8/4.0.1/include/syslimits.h" 1 3 4
# 1 "subdirectory/limits.h" 1 3 4
# 8 "/usr/lib/gcc/powerpc-apple-darwin8/4.0.1/include/syslimits.h" 2 3 4
# 12 "/usr/lib/gcc/powerpc-apple-darwin8/4.0.1/include/limits.h" 2 3 4
# 1 "t.c" 2
Side note, this stuff makes my head hurt. Maybe it is just a trivial
bug in some logic somewhere, and these aren't the desired/documented
semantics.
