Date: Sun, 16 Aug 1998 12:56:04 +0300 (IDT)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
To: DJ Delorie <dj AT delorie DOT com>
cc: djgpp-workers AT delorie DOT com
Subject: exe2coff and files withg no .exe extension
Message-ID: <Pine.SUN.3.91.980816125241.7668B-100000@is>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Precedence: bulk

I am told that exe2coff does bad things when invoked with stubified files 
that lack the .exe suffix.  I think such files are generally a bad idea 
(for starters, DOS won't run them), but here's a stopgap that will at 
least prevent exe2coff from crashing:

*** src/stub/exe2coff.c~0	Thu Jan  1 20:38:50 1998
--- src/stub/exe2coff.c	Fri Aug 14 13:02:32 1998
***************
*** 7,12 ****
--- 7,13 ----
  #include <string.h>
  #include <io.h>
  #include <unistd.h>
+ #include <ctype.h>
  
  
  static void
*************** exe2aout(char *fname)
*** 17,22 ****
--- 18,33 ----
    int ofile;
    char buf[4096];
    int rbytes;
+   char *dot = strrchr(fname, '.');
+   if (!dot || strlen(dot) != 4
+       || tolower(dot[1]) != 'e'
+       || tolower(dot[2]) != 'x'
+       || tolower(dot[3]) != 'e')
+   {
+     fprintf(stderr, "Arguments MUST end with a .exe extension\n", fname);
+     return;
+   }
+ 
    ifile = open(fname, O_RDONLY|O_BINARY);
    if (ifile < 0)
    {
*************** exe2aout(char *fname)
*** 34,51 ****
      read(ifile, header, sizeof(header));
      if ((header[0] != 0x010b) && (header[0] != 0x014c))
      {
!       fprintf(stderr, "%s does not have an a.out file appended to it\n", fname);
!       exit(1);
      }
      lseek(ifile, header_offset, 0);
    }
    else
    {
!     fprintf(stderr, "%s is not an .EXE file\n", fname);
!     exit(1);
    }
    
!   *strrchr(fname, '.') = 0;
    ofile = open(fname, O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, 0666);
    if (ofile < 0)
    {
--- 45,62 ----
      read(ifile, header, sizeof(header));
      if ((header[0] != 0x010b) && (header[0] != 0x014c))
      {
!       fprintf(stderr, "`%s' does not have a COFF/AOUT program appended to it\n", fname);
!       return;
      }
      lseek(ifile, header_offset, 0);
    }
    else
    {
!     fprintf(stderr, "`%s' is not an .EXE file\n", fname);
!     return;
    }
    
!   *dot = 0;
    ofile = open(fname, O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, 0666);
    if (ofile < 0)
    {
*************** exe2aout(char *fname)
*** 63,69 ****
      }
      if (wb < rbytes)
      {
!       fprintf(stderr, "%s: disk full\n", fname);
        exit(1);
      }
    }
--- 74,80 ----
      }
      if (wb < rbytes)
      {
!       fprintf(stderr, "`%s': disk full\n", fname);
        exit(1);
      }
    }