bug#7181: 24.0.50; args-out-of-range while reverting C++ header file

["Óscar Fuentes" <ofv@wanadoo.es>]

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With the attached files the problem can be reproduced predictability:

Save the attached files b.h.master and b.h.next to a directory and cd to
it.

$ emacs -Q &
$ cp b.h.master b.h
C-x C-f b.h
$ cp b.h.next b.h
M-x revert-buffer

and the args-out-of-range error pops:

c-clear-char-property-with-value-function: Args out of range: 166, 453

I was unable to try with the latest Emacs sources because the build is
broken. My Emacs is from the 16 September.


[-- Attachment #2: b.h.master --]
[-- Type: application/octet-stream, Size: 452 bytes --]

#ifndef BASICOPS_H_F902161C
#define BASICOPS_H_F902161C

#include "ffi.h"
#include <time.h>

LP0_NEW_TYPE_DEC_EXPORTED(unsigned char);
LP0_NEW_TYPE_DEC_EXPORTED(tm);

namespace lp0 {

struct Int : public OpBase0<int> {};

struct CastCharToStringOP : public OpBase1<std::string, char> {
  static void w(std::string *r, char v) {
    std::string t;
    t += v;
    FFIRetClass(r, t);
  }
};

} // namespace lp0

#endif /* #ifndef BASICOPS_H_F902161C */ 

[-- Attachment #3: b.h.next --]
[-- Type: application/octet-stream, Size: 349 bytes --]

#ifndef BASICOPS_H_F902161C
#define BASICOPS_H_F902161C

#include "ffi.h"
#include <time.h>

namespace lp0 {

template <typename Derived, typename Base>
struct DynamicCastOp : public OpBase1<Derived*, Base*>
{
  static Derived* w(Base *p) {
    return dynamic_cast<Derived*>(p);
  }
};

} // namespace lp0

#endif /* #ifndef BASICOPS_H_F902161C */