ci(fuzz): Bug fixes and tweaks for fuzz scripts

fuzz-until-converged.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+rm -r "fuzz/corpus/fuzz_$1_old"
+updated=1
+while [[ $updated ]]; do
+  updated=0
+  cp -r "fuzz/corpus/fuzz_$1" "fuzz/corpus/fuzz_$1_old"
+  cargo fuzz run --all-features "fuzz_$1" "fuzz/corpus/fuzz_$1" -- \
+    -dict=fuzz/fuzz.dict -max_len="$2" -rss_limit_mb=8192 \
+    -fork="$(nproc || getconf NPROCESSORS_ONLN)" -runs=1000000
+  ./recursive-fuzz-cmin.sh "$1" "$2"
+  updated=$(diff "fuzz/corpus/fuzz_$1" "fuzz/corpus/fuzz_$1_old")
+  rm -r "fuzz/corpus/fuzz_$1_old"
+done

recursive-fuzz-cmin.sh

@@ -1,6 +1,7 @@
 #!/bin/bash
-cp -r "fuzz/corpus/fuzz_$1" "fuzz/corpus/fuzz_$1_iter_0"
 i=0
+find fuzz/corpus -iname "fuzz_$1_iter_*" -exec rm -r {} +
+cp -r "fuzz/corpus/fuzz_$1" "fuzz/corpus/fuzz_$1_iter_0"
 while true; do
   j=$((i + 1))
   cp -r "fuzz/corpus/fuzz_$1_iter_${i}" "fuzz/corpus/fuzz_$1_iter_${i}.bak"
@@ -11,7 +12,8 @@ while true; do
     # Last iteration made no difference, so we're done
     rm -r "fuzz/corpus/fuzz_$1"
     mv "fuzz/corpus/fuzz_$1_iter_${j}" "fuzz/corpus/fuzz_$1"
+    find fuzz/corpus -iname "fuzz_$1_iter_*" -exec rm -r {} +
     exit 0
   fi
   i=$j
-done
+done