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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-12-07 16:30:11 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-12-07 16:30:11 -0300
commit189382f7a338c02b448ab27e1d5566e052165dc8 (patch)
tree14903209649ee76584b17afa492e31a0c9460c27 /lib
parent62e27076b7a48d1c8fc4eed59ff75f6382915c46 (diff)
Linux-libre 4.8.12-gnupck-4.8.12-gnu
Diffstat (limited to 'lib')
-rw-r--r--lib/mpi/mpi-pow.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/mpi/mpi-pow.c b/lib/mpi/mpi-pow.c
index 5464c8744..e24388a86 100644
--- a/lib/mpi/mpi-pow.c
+++ b/lib/mpi/mpi-pow.c
@@ -64,8 +64,13 @@ int mpi_powm(MPI res, MPI base, MPI exp, MPI mod)
if (!esize) {
/* Exponent is zero, result is 1 mod MOD, i.e., 1 or 0
* depending on if MOD equals 1. */
- rp[0] = 1;
res->nlimbs = (msize == 1 && mod->d[0] == 1) ? 0 : 1;
+ if (res->nlimbs) {
+ if (mpi_resize(res, 1) < 0)
+ goto enomem;
+ rp = res->d;
+ rp[0] = 1;
+ }
res->sign = 0;
goto leave;
}