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| author | Thomas Koenig <tkoenig@gcc.gnu.org> | 2019-12-30 10:34:11 +0000 |
|---|---|---|
| committer | Thomas Koenig <tkoenig@gcc.gnu.org> | 2019-12-30 10:34:11 +0000 |
| commit | 672511187345d30ccd725214ac4b34b181bd6569 (patch) | |
| tree | 4dd5ef16a039f4e241f8d2222b19e3661cd794a5 /gcc/fortran/arith.c | |
| parent | c3182576ea48f175283e291094298831dd7046e5 (diff) | |
| download | gcc-672511187345d30ccd725214ac4b34b181bd6569.zip gcc-672511187345d30ccd725214ac4b34b181bd6569.tar.gz gcc-672511187345d30ccd725214ac4b34b181bd6569.tar.bz2 | |
Catch division by zero errors in array sizes.
2019-12-30 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/92961
* gfortran.h (gfc_seen_div0): Add declaration.
* arith.h (gfc_seen_div0): Add definition.
(eval_intrinsic): For integer division by zero, set gfc_seen_div0.
* decl.c (variable_decl): If resolution resp. simplification
fails for array spec and a division of zero error has been
seen, return MATCH_ERROR.
2019-12-30 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/92961
* gfortran.dg/arith_divide_2.f90: New test.
From-SVN: r279762
Diffstat (limited to 'gcc/fortran/arith.c')
| -rw-r--r-- | gcc/fortran/arith.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/fortran/arith.c b/gcc/fortran/arith.c index 7f048da..b7699e4 100644 --- a/gcc/fortran/arith.c +++ b/gcc/fortran/arith.c @@ -32,6 +32,8 @@ along with GCC; see the file COPYING3. If not see #include "target-memory.h" #include "constructor.h" +bool gfc_seen_div0; + /* MPFR does not have a direct replacement for mpz_set_f() from GMP. It's easily implemented with a few calls though. */ @@ -1620,6 +1622,10 @@ eval_intrinsic (gfc_intrinsic_op op, gfc_error (gfc_arith_error (rc), &op1->where); if (rc == ARITH_OVERFLOW) goto done; + + if (rc == ARITH_DIV0 && op2->ts.type == BT_INTEGER) + gfc_seen_div0 = true; + return NULL; } |