i#4518: Handle NULL fp_simd_state signal frame pointer (!4519) · Merge requests · DynamoRIO / dynamorio

Merged Derek Bruening requested to merge i4518-null-simd-state into master Nov 04, 2020

Fixes a crash when an aarch64 signal frame has a NULL fp_simd_state pointer, which is a legitimate situation.

Tested on the client.signal test's forthcoming port to a64.