binutils-gdb/binutils/config.in
Richard W.M. Jones 3f8f9745c7 PR 31283 windmc: Parse input correctly on big endian hosts
On big endian hosts (eg. s390x) the windmc tool fails to parse even
trivial files:

  $ cat test.mc
  ;
  $ ./binutils/windmc ./test.mc
  In test.mc at line 1: parser: syntax error.
  In test.mc at line 1: fatal: syntax error.

The tool starts by reading the input as Windows CP1252 and then
converting it internally into an array of UTF-16LE, which it then
processes as an array of unsigned short (typedef unichar).

There are lots of ways this is wrong, but in the specific case of big
endian machines the little endian pairs of bytes are byte-swapped.

For example, the ';' character in the input above is first converted
to UTF16-LE byte sequence { 0x3b, 0x00 }, which is then cast to
unsigned short.  On a big endian machine the first unichar appears to
be 0x3b00.  The lexer is unable to recognize this as the comment
character ((unichar)';') and so parsing fails.

The simple fix is to convert the input to UTF-16BE on big endian
machines (and do the reverse conversion when writing the output).

Fixes: https://sourceware.org/bugzilla/show_bug.cgi?id=31283
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
2024-02-08 12:14:40 +10:30

298 lines
8.1 KiB
Plaintext

/* config.in. Generated from configure.ac by autoheader. */
/* Check that config.h is #included before system headers
(this works only for glibc, but that should be enough). */
#if defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__CONFIG_H__)
# error config.h must be #included before system headers
#endif
#define __CONFIG_H__ 1
/* Define if building universal (internal helper macro) */
#undef AC_APPLE_UNIVERSAL_BUILD
/* Should ar and ranlib use -D behavior by default? */
#undef DEFAULT_AR_DETERMINISTIC
/* Have objdump use colors in its disassembly by default */
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/* Have readelf and objdump follow debug links by default */
#undef DEFAULT_FOR_FOLLOW_LINKS
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/* Define if you want run-time sanity checks. */
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/* Handle .ctf type-info sections */
#undef ENABLE_LIBCTF
/* Define to 1 if translation of program messages to the user's native
language is requested. */
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/* Suffix used for executables, if any. */
#undef EXECUTABLE_SUFFIX
/* Define to 1 if you have the Mac OS X function
CFLocaleCopyPreferredLanguages in the CoreFoundation framework. */
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/* Define to 1 if you have the Mac OS X function CFPreferencesCopyAppValue in
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