orcprogram-neon: Fix usage of negative array index on errors

CID 1522422
CID 1522354

Part-of: <https://gitlab.freedesktop.org/gstreamer/orc/-/merge_requests/94>

1 files changed, 12 insertions, 4 deletions

diff --git a/orc/orcprogram-neon.c b/orc/orcprogram-neon.c
index 5236b9f..a581115 100644
--- a/orc/orcprogram-neon.c
+++ b/orc/orcprogram-neon.c
@@ -599,10 +599,14 @@ enum {
 static void
 orc_neon64_loop_shift (OrcCompiler *compiler)
 {
-  int align_var = get_align_var (compiler);
-  int var_size_shift = get_shift (compiler->vars[align_var].size);
+  int align_var;
+  int var_size_shift;
   int align_shift = 4;
 
+  align_var = get_align_var (compiler);
+  if (compiler->error) return;
+  var_size_shift = get_shift (compiler->vars[align_var].size);
+
   if (compiler->n_insns < 5) {
     /** Get the number of loops (N) from OrcExecutor */
     orc_arm64_emit_load_reg (compiler, 32, ORC_ARM64_R2, compiler->exec_reg,
@@ -711,10 +715,14 @@ orc_neon64_loop_shift (OrcCompiler *compiler)
 static void
 orc_neon64_loop_caches (OrcCompiler *compiler)
 {
-  int align_var = get_align_var (compiler);
-  int var_size_shift = get_shift (compiler->vars[align_var].size);
+  int align_var;
+  int var_size_shift;
   int i;
 
+  align_var = get_align_var (compiler);
+  if (compiler->error) return;
+  var_size_shift = get_shift (compiler->vars[align_var].size);
+
   /** if IP0 == 0, go to LABEL_REGION2_SKIP */
   orc_arm64_emit_cmp_imm (compiler, 32, ORC_ARM64_IP0, 0);
   orc_arm_emit_branch (compiler, ORC_ARM_COND_EQ, LABEL_REGION2_SKIP);