update .gitignore

.gitignore

@@ -19,28 +19,39 @@ _cgo_export.*
 
 _testmain.go
 
+# Artifacts, profiles, etc.
 *.exe
 *.test
 *.prof
-
 *.tags
-
 .git
 *.swp
 *.txt
 *.tags
-old.*
+tags
 *.test
 *.out
+*.zip
+*.gz
+
+# Internal
 literature/
 j/
-*.txt
-fuzz/
+
+# Fuzzing
+fuzz/**/corpus
+fuzz/**/crashers
+fuzz/**/suppressions
+
+# Benchmark artifacts
 benchmarks/decbench
 *.xml
 *.class
-*.gz
+.idea/
+
+# Development
 internal/nat/
+
+# Testing
 x.bash
-tags
-*.decTest
+*.decTest

fuzz/SetString/SetString.go

@@ -0,0 +1,37 @@
+package fuzz
+
+import (
+	"fmt"
+	"runtime/debug"
+
+	"github.com/ericlagergren/decimal"
+)
+
+func Fuzz(data []byte) int {
+	debug.SetTraceback("system")
+
+	d := new(decimal.Big)
+	d, ok := d.SetString(string(data))
+	if !ok {
+		if decimal.Regexp.Match(data) && d.Context.Err() == nil {
+			panic(fmt.Sprintf("should work: %q", data))
+		}
+		return 0
+	}
+	d2 := new(decimal.Big)
+	ds := d.String()
+	d2, ok = d2.SetString(ds)
+	if !ok {
+		panic(fmt.Sprintf("SetString(%q) == nil, false", ds))
+	}
+	if d.Cmp(d2) != 0 {
+		panic(fmt.Sprintf(`
+got   : %#v (%q)
+wanted: %#v (%q)
+`, d2, d2, d, d))
+	}
+	if !decimal.Regexp.Match(data) {
+		panic(fmt.Sprintf("got: %q", data))
+	}
+	return 1
+}