diff options
Diffstat (limited to 'gcc/c-pch.c')
| -rw-r--r-- | gcc/c-pch.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gcc/c-pch.c b/gcc/c-pch.c index a30310226ff..157061f9177 100644 --- a/gcc/c-pch.c +++ b/gcc/c-pch.c @@ -102,13 +102,14 @@ pch_init (void) FILE *f; struct c_pch_validity v; void *target_validity; + static const char partial_pch[IDENT_LENGTH] = "gpcWrite"; if (! pch_file) return; f = fopen (pch_file, "w+b"); if (f == NULL) - fatal_error ("can't open %s: %m", pch_file); + fatal_error ("can't create precompiled header %s: %m", pch_file); pch_outfile = f; if (strlen (host_machine) > 255 || strlen (target_machine) > 255 @@ -122,7 +123,7 @@ pch_init (void) v.pch_init = &pch_init; target_validity = targetm.get_pch_validity (&v.target_data_length); - if (fwrite (get_ident(), IDENT_LENGTH, 1, f) != 1 + if (fwrite (partial_pch, IDENT_LENGTH, 1, f) != 1 || fwrite (&v, sizeof (v), 1, f) != 1 || fwrite (host_machine, v.host_machine_length, 1, f) != 1 || fwrite (target_machine, v.target_machine_length, 1, f) != 1 @@ -189,6 +190,10 @@ c_common_write_pch (void) gt_pch_save (pch_outfile); cpp_write_pch_state (parse_in, pch_outfile); + if (fseek (pch_outfile, 0, SEEK_SET) != 0 + || fwrite (get_ident (), IDENT_LENGTH, 1, pch_outfile) != 1) + fatal_error ("can't write %s: %m", pch_file); + fclose (pch_outfile); } |