Merge pull request #482 from abergeron/fix_segfault

Fix segfault in Theano 0.9

Author: lamblin

src/gpuarray_buffer.c

@@ -162,7 +162,7 @@ gpukernel *gpukernel_init(gpucontext *ctx, unsigned int count,
                           const char *fname, unsigned int numargs,
                           const int *typecodes, int flags, int *ret,
                           char **err_str) {
-  gpukernel *res;
+  gpukernel *res = NULL;
   int err;
   err = ctx->ops->kernel_alloc(&res, ctx, count, strings, lengths, fname,
                                numargs, typecodes, flags, err_str);

src/gpuarray_elemwise.c

@@ -740,12 +740,12 @@ void GpuElemwise_free(GpuElemwise *ge) {
 }
 
 int GpuElemwise_call(GpuElemwise *ge, void **args, int flags) {
-  size_t n;
-  size_t *dims;
-  ssize_t **strides;
-  unsigned int nd;
-  int contig;
-  int call32;
+  size_t n = 0;
+  size_t *dims = NULL;
+  ssize_t **strides = NULL;
+  unsigned int nd = 0;
+  int contig = 0;
+  int call32 = 0;
   int err;
 
   err = check_contig(ge, args, &n, &contig);