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Support: improve identify_magic to recognize COFF bigobj

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identify_magic recognized a COFF bigobj as an import library file.
This patch fixes that.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217627 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rui Ueyama
2014-09-11 21:09:57 +00:00
parent 8d230cd536
commit 330c819d83
2 changed files with 12 additions and 3 deletions
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12
lib/Support/Path.cpp
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@ -901,10 +901,16 @@ file_magic identify_magic(StringRef Magic) {
return file_magic::unknown;
switch ((unsigned char)Magic[0]) {
case 0x00: {
// COFF short import library file
// COFF bigobj or short import library file
if (Magic[1] == (char)0x00 && Magic[2] == (char)0xff &&
Magic[3] == (char)0xff)
return file_magic::coff_import_library;
Magic[3] == (char)0xff) {
const char BigobjMagic[] =
"\xc7\xa1\xba\xd1\xee\xba\xa9\x4b\xaf\x20\xfa\xf6\x6a\xa4\xdc\xb8";
if (Magic.size() >= 28 &&
memcmp(Magic.data() + 12, BigobjMagic, sizeof(BigobjMagic)) == 0)
return file_magic::coff_object;
return file_magic::coff_import_library;
}
// Windows resource file
const char Expected[] = { 0, 0, 0, 0, '\x20', 0, 0, 0, '\xff' };
if (Magic.size() >= sizeof(Expected) &&