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1 /* { dg-do compile } */
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2 /* { dg-options "-O -w" } */
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3
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4 /* This code snippet from glibc 2.3.5 was causing an ICE during
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5 optimization because we were failing to update the SSA form for
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6 stale name tags. These are tags that are associated with SSA pointers
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7 that have been removed from the IL. This was causing the SSA
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8 verifier to fail before we had a chance to run the cleanup pass that
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9 finally removes all the remaining PHI nodes for the stale name tag. */
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10 struct _IO_wide_data
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11 {
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12 };
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13 struct _IO_FILE {
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14 };
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15 typedef struct _IO_FILE _IO_FILE;
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16 struct _IO_jump_t
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17 {
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18 };
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19 struct _IO_FILE_plus
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20 {
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21 _IO_FILE file;
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22 };
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23 extern const struct _IO_jump_t _IO_file_jumps_maybe_mmap ;
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24 extern const struct _IO_jump_t _IO_wfile_jumps;
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25 extern const struct _IO_jump_t _IO_wfile_jumps_maybe_mmap ;
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26
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27 _IO_new_fdopen (fd, mode)
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28 const char *mode;
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29 {
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30 int read_write;
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31 int posix_mode = 0;
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32 struct locked_FILE
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33 {
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34 struct _IO_FILE_plus fp;
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35 struct _IO_wide_data wd;
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36 } *new_f;
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37 int fd_flags;
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38 int use_mmap = 0;
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39 {
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40 }
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41 {
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42 switch (*++mode)
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43 {
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44 case '\0':
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45 use_mmap = 1;
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46 }
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47 }
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48 if (((fd_flags & 0003) == 00 && !(read_write & 8))
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49 || ((fd_flags & 0003) == 01 && !(read_write & 4)))
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50 {
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51 }
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52 if ((posix_mode & 02000) && !(fd_flags & 02000))
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53 return ((void *)0);
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54 _IO_no_init (&new_f->fp.file, 0, 0, &new_f->wd,
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55 (use_mmap && (read_write & 8))
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56 ? &_IO_wfile_jumps_maybe_mmap :
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57 &_IO_wfile_jumps);
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58 (use_mmap && (read_write & 8)) ? &_IO_file_jumps_maybe_mmap :
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59 _IO_file_init (&new_f->fp);
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60 }
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