[LLVMbugs] [Bug 15664] New: -frewrite-includes doesn't handle Windows UTF-8 BOM

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Wed Apr 3 17:05:18 PDT 2013


            Bug ID: 15664
           Summary: -frewrite-includes doesn't handle Windows UTF-8 BOM
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: paul_robinson at playstation.sony.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

when Clang crashes, it will create a preprocessed file using
Unfortunately this does not strip byte-order marks from included headers.

Attached bom.c is a regular text file, bom.h is encoded as UTF-8 with BOM.

C:\Data\scratch>clang -c bom.c 
C:\Data\scratch>clang -E bom.c > bom-E.c
C:\Data\scratch>clang -c bom-E.c
C:\Data\scratch>clang -E -frewrite-includes bom.c > bom-E2.c
C:\Data\scratch>clang -c bom-E2.c
./bom.h:1:1: error: non-ASCII characters are not allowed outside of literals

<U+FEFF>void foo();
1 error generated.

C:\Data\scratch>clang --version
clang version 3.3 (178499)
Target: i686-pc-win32
Thread model: posix

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