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authoriximeow <me@iximeow.net>2021-12-16 19:58:15 -0800
committeriximeow <me@iximeow.net>2021-12-16 20:01:26 -0800
commitf063f747c21548329170fd09fd09d391b2277aed (patch)
tree38159b9379c7f7c081554d431f78872b5a465e92 /test/long_mode
parentcd987288f0334b9888174f4ccc2d1f564388e994 (diff)
displacements are stored as unsigned, but are functionally signed ints
so multiplying to expand EVEX compressed offsets can overflow, and that needs to be okay.
Diffstat (limited to 'test/long_mode')
-rw-r--r--test/long_mode/mod.rs6
1 files changed, 6 insertions, 0 deletions
diff --git a/test/long_mode/mod.rs b/test/long_mode/mod.rs
index 1efa74e..ee0ab4e 100644
--- a/test/long_mode/mod.rs
+++ b/test/long_mode/mod.rs
@@ -3390,3 +3390,9 @@ fn test_sevsnp() {
fn from_llvm() {
test_display(&[0xf3, 0x0f, 0x3a, 0xf0, 0xc0, 0x01], "hreset 0x1");
}
+
+#[test]
+fn from_reports() {
+ // negative compressed evex displacements should not overflow and panic
+ test_display(&[0x62, 0xf2, 0x6d, 0xac, 0x00, 0x59, 0xa7], "vpshufb ymm3{k4}{z}, ymm2, ymmword [rcx - 0xb20]");
+}