http://llvm.org/bugs/show_bug.cgi?id=11417
Bug #: 11417
Summary: clang silently ignores #include of non-seekable files
Product: clang
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Frontend
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
Consider this ... insanity:
#include "/proc/cpuinfo"
Okay. This file is not a device, but it is a non-seekable file.
nlewycky@ducttape:~$ ls -l /proc/cpuinfo
-r--r--r-- 1 root root 0 2011-11-21 14:59 /proc/cpuinfo
nlewycky@ducttape:~$ file /proc/cpuinfo
/proc/cpuinfo: empty
"file" in this case has the same bug, it uses the stat size *and trusts it*.
The Unix Way is to just open the file for reading if you're going to read it.
The size in stat is an advisory value only.
What happens is that the include produces no tokens at all. By contrast,
#include "/dev/stdin" produces an actual error "Illegal seek" and points to the
#include responsible. I'd like either the contents or a proper error.
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