diff --git a/.cirrus.yml b/.cirrus.yml
index abef7f33..7d16de28 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -15,7 +15,7 @@ task:
     - mkdir build
     - cd build
     - cmake ..
-    - make -j4
+    - make
   test_script:
     - cd build
-    - ctest -j4 --output-on-failure -E checkperf
\ No newline at end of file
+    - ctest --output-on-failure -E checkperf
\ No newline at end of file
diff --git a/.github/workflows/mingw-ci.yml b/.github/workflows/mingw-ci.yml
index 05822599..8aff9ea1 100644
--- a/.github/workflows/mingw-ci.yml
+++ b/.github/workflows/mingw-ci.yml
@@ -50,4 +50,4 @@ jobs:
           cd build32
           cmake -DSIMDJSON_BUILD_STATIC=ON -DSIMDJSON_COMPETITION=OFF -DSIMDJSON_GOOGLE_BENCHMARKS=OFF -DSIMDJSON_ENABLE_THREADS=OFF ..
           cmake --build . --target parse_many_test jsoncheck basictests numberparsingcheck stringparsingcheck errortests integer_tests pointercheck --verbose
-          ctest . -R "(parse_many_test|jsoncheck|basictests|stringparsingcheck|numberparsingcheck|errortests|integer_tests|pointercheck)"  --output-on-failure
+          ctest -R "(parse_many_test|jsoncheck|basictests|stringparsingcheck|numberparsingcheck|errortests|integer_tests|pointercheck)"  --output-on-failure
diff --git a/.github/workflows/mingw64-ci.yml b/.github/workflows/mingw64-ci.yml
index 8b9b2785..397236e8 100644
--- a/.github/workflows/mingw64-ci.yml
+++ b/.github/workflows/mingw64-ci.yml
@@ -50,4 +50,4 @@ jobs:
           cd build64
           cmake -DSIMDJSON_BUILD_STATIC=ON -DSIMDJSON_COMPETITION=OFF -DSIMDJSON_GOOGLE_BENCHMARKS=OFF -DSIMDJSON_ENABLE_THREADS=OFF ..
           cmake --build . --target parse_many_test jsoncheck basictests numberparsingcheck stringparsingcheck errortests integer_tests pointercheck --verbose
-          ctest . -R "(parse_many_test|jsoncheck|basictests|stringparsingcheck|numberparsingcheck|errortests|integer_tests|pointercheck)"  --output-on-failure
+          ctest -R "(parse_many_test|jsoncheck|basictests|stringparsingcheck|numberparsingcheck|errortests|integer_tests|pointercheck)"  --output-on-failure
diff --git a/.github/workflows/ubuntu18.yml b/.github/workflows/ubuntu18.yml
index c76b17f4..ed032913 100644
--- a/.github/workflows/ubuntu18.yml
+++ b/.github/workflows/ubuntu18.yml
@@ -17,6 +17,6 @@ jobs:
           cd build &&
           cmake  -DSIMDJSON_GOOGLE_BENCHMARKS=ON -DSIMDJSON_BUILD_STATIC=ON -DCMAKE_INSTALL_PREFIX:PATH=destination ..  &&
           cmake --build .   &&
-          ctest . -j --output-on-failure  &&
+          ctest -j --output-on-failure  &&
           make install  &&
           echo -e '#include <simdjson.h>\nint main(int argc,char**argv) {simdjson::dom::parser parser;simdjson::dom::element tweets = parser.load(argv[1]); }' > tmp.cpp && c++ -Idestination/include -Ldestination/lib -std=c++17 -Wl,-rpath,destination/lib -o linkandrun tmp.cpp -lsimdjson && ./linkandrun jsonexamples/twitter.json
diff --git a/.github/workflows/ubuntu20.yml b/.github/workflows/ubuntu20.yml
index 12830ddc..271eb935 100644
--- a/.github/workflows/ubuntu20.yml
+++ b/.github/workflows/ubuntu20.yml
@@ -17,6 +17,6 @@ jobs:
           cd build &&
           cmake  -DSIMDJSON_GOOGLE_BENCHMARKS=ON -DSIMDJSON_BUILD_STATIC=ON -DCMAKE_INSTALL_PREFIX:PATH=destination ..  &&
           cmake --build .   &&
-          ctest . -j --output-on-failure  &&
+          ctest -j --output-on-failure  &&
           make install  &&
           echo -e '#include <simdjson.h>\nint main(int argc,char**argv) {simdjson::dom::parser parser;simdjson::dom::element tweets = parser.load(argv[1]); }' > tmp.cpp && c++ -Idestination/include -Ldestination/lib -std=c++17 -Wl,-rpath,destination/lib -o linkandrun tmp.cpp -lsimdjson && ./linkandrun jsonexamples/twitter.json
diff --git a/jsonchecker/fail82.json b/jsonchecker/fail82.json
new file mode 100644
index 00000000..68e8fced
--- /dev/null
+++ b/jsonchecker/fail82.json
@@ -0,0 +1 @@
+10.2.2
diff --git a/src/generic/stage2/numberparsing.h b/src/generic/stage2/numberparsing.h
index 4524aac1..fbb30c12 100644
--- a/src/generic/stage2/numberparsing.h
+++ b/src/generic/stage2/numberparsing.h
@@ -460,7 +460,8 @@ really_inline bool parse_number(const uint8_t *const src, W &writer) {
     if (!parse_exponent(src, p, exponent)) { return false; }
   }
   if (is_float) {
-    return write_float(src, negative, i, start_digits, digit_count, exponent, writer);
+    const bool clean_end = is_structural_or_whitespace(*p);
+    return write_float(src, negative, i, start_digits, digit_count, exponent, writer) && clean_end;
   }
 
   // The longest negative 64-bit number is 19 digits.
diff --git a/src/jsoncharutils_tables.h b/src/jsoncharutils_tables.h
index afa1ebe5..46fa0b56 100644
--- a/src/jsoncharutils_tables.h
+++ b/src/jsoncharutils_tables.h
@@ -15,7 +15,7 @@ namespace simdjson {
 // we are also interested in the four whitespace characters
 // space 0x20, linefeed 0x0a, horizontal tab 0x09 and carriage return 0x0d
 
-const uint32_t structural_or_whitespace_negated[256] = {
+const bool structural_or_whitespace_negated[256] = {
     1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1,
     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
     0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1,
@@ -32,7 +32,7 @@ const uint32_t structural_or_whitespace_negated[256] = {
     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
 
-const uint32_t structural_or_whitespace[256] = {
+const bool structural_or_whitespace[256] = {
     0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0,
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,