[LLVMbugs] [Bug 4897] New: [2.6] clang doesn' t search CWD for include files when reading from stdin

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=4897

           Summary: [2.6] clang doesn't search CWD for include files when
                    reading from stdin
           Product: new-bugs
           Version: 2.6
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: edwintorok at gmail.com
                CC: llvmbugs at cs.uiuc.edu


Perl's t/comp/cpp fails, when using clang:
1..3
ok 1
ok 2
<stdin>:2:10: fatal error: 'Comp_cpp.inc' file not found
#include "Comp_cpp.inc"
         ^
1 diagnostic generated.
not ok 3

This is because the following command gives an error:
$ clang -E -C -I/usr/local/lib/perl5/5.10.0 - <Comp_cpp.tmp
<stdin>:2:10: fatal error: 'Comp_cpp.inc' file not found
#include "Comp_cpp.inc"
         ^
# 1 "<stdin>"
# 1 "<stdin>" 1
# 1 "<built-in>" 1
# 1 "<built-in>" 3
# 105 "<built-in>" 3
# 105 "<command line>" 1
# 1 "<stdin>" 2
$ok = "not ok 3\n";




print $ok;
1 diagnostic generated.

Running this with llvm-gcc or gcc works:
clang -E -C -I/usr/local/lib/perl5/5.10.0 - <Comp_cpp.tmp
<stdin>:2:10: fatal error: 'Comp_cpp.inc' file not found
#include "Comp_cpp.inc"
         ^
# 1 "<stdin>"
# 1 "<stdin>" 1
# 1 "<built-in>" 1
# 1 "<built-in>" 3
# 105 "<built-in>" 3
# 105 "<command line>" 1
# 1 "<stdin>" 2
$ok = "not ok 3\n";




print $ok;
1 diagnostic generated.

Comp_cpp.inc is in the current directory, and contains this:
#define OK "ok 3\n"

This is not due to -I and -C, even clang -E - <Comp_cpp.tmp fails to find the
.inc, however using -x -c Comp_cpp.tmp instead of - <Comp_cpp.tmp works.


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