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| author | Jerry DeLisle <jvdelisle@gcc.gnu.org> | 2017-05-15 23:48:39 +0000 |
|---|---|---|
| committer | Jerry DeLisle <jvdelisle@gcc.gnu.org> | 2017-05-15 23:48:39 +0000 |
| commit | a5768d38a66fc4136208bc8442a4118df2bd588f (patch) | |
| tree | aae6a5d219e2a2328d5b0eca6f9178cbe3e6fd86 /libgfortran/io/transfer.c | |
| parent | b2954e124bc411b0b9d8f5f7b4fe2e50f241bbd0 (diff) | |
| download | gcc-a5768d38a66fc4136208bc8442a4118df2bd588f.zip gcc-a5768d38a66fc4136208bc8442a4118df2bd588f.tar.gz gcc-a5768d38a66fc4136208bc8442a4118df2bd588f.tar.bz2 | |
re PR libfortran/80727 (Crash of runtime gfortran library during integer transformation)
2017-05-15 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libgfortran/80727
* transfer.c (read_sf_internal): Remove bogus code to detect EOR.
(read_block_form): For internal units, generate EOR if no more
bytes left in unit and we are trying to read with ADVANCE='NO'.
* gfortran.dg/read_3.f90: New test.
From-SVN: r248080
Diffstat (limited to 'libgfortran/io/transfer.c')
| -rw-r--r-- | libgfortran/io/transfer.c | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/libgfortran/io/transfer.c b/libgfortran/io/transfer.c index f16d8c5..928a448 100644 --- a/libgfortran/io/transfer.c +++ b/libgfortran/io/transfer.c @@ -272,12 +272,6 @@ read_sf_internal (st_parameter_dt *dtp, int *length) return NULL; } - if (base && *base == 0) - { - generate_error (&dtp->common, LIBERROR_EOR, NULL); - return NULL; - } - dtp->u.p.current_unit->bytes_left -= *length; if (((dtp->common.flags & IOPARM_DT_HAS_SIZE) != 0) || @@ -470,11 +464,24 @@ read_block_form (st_parameter_dt *dtp, int *nbytes) } } - if (unlikely (dtp->u.p.current_unit->bytes_left == 0 - && !is_internal_unit(dtp))) + if (is_internal_unit(dtp)) { - hit_eof (dtp); - return NULL; + if (*nbytes > 0 && dtp->u.p.current_unit->bytes_left == 0) + { + if (dtp->u.p.advance_status == ADVANCE_NO) + { + generate_error (&dtp->common, LIBERROR_EOR, NULL); + return NULL; + } + } + } + else + { + if (unlikely (dtp->u.p.current_unit->bytes_left == 0)) + { + hit_eof (dtp); + return NULL; + } } *nbytes = dtp->u.p.current_unit->bytes_left; |