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More fuzzing.

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This commit is contained in:
Nuno Cruces
2025-05-21 11:25:07 +01:00
parent 341bd063e8
commit 93f711c77b
1 changed files with 105 additions and 25 deletions
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130
sqlite3/libc/libc_test.go
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@@ -878,6 +878,74 @@ func Test_strcasestr(t *testing.T) {
}
}
func Fuzz_memchr(f *testing.F) {
f.Fuzz(func(t *testing.T, s string, c, i byte) {
if len(s) > 128 || int(i) > len(s) {
t.SkipNow()
}
copy(memory[ptr1:], s)
got := call(memchr, ptr1+uint64(i), uint64(c), uint64(len(s)-int(i)))
want := strings.IndexByte(s[i:], c)
if want >= 0 {
want = ptr1 + int(i) + want
} else {
want = 0
}
if uint32(got) != uint32(want) {
t.Errorf("memchr(%q, %q) = %d, want %d",
s[i:], c, uint32(got), uint32(want))
}
})
}
func Fuzz_strchr(f *testing.F) {
f.Fuzz(func(t *testing.T, s string, c, i byte) {
if len(s) > 128 || int(i) > len(s) {
t.SkipNow()
}
copy(memory[ptr1:], s)
memory[ptr1+len(s)] = 0
got := call(strchr, ptr1+uint64(i), uint64(c))
want := bytes.IndexByte(term1(memory[ptr1+uint64(i):]), c)
if want >= 0 {
want = ptr1 + int(i) + want
} else {
want = 0
}
if uint32(got) != uint32(want) {
t.Errorf("strchr(%q, %q) = %d, want %d",
s[i:], c, uint32(got), uint32(want))
}
})
}
func Fuzz_strrchr(f *testing.F) {
f.Fuzz(func(t *testing.T, s string, c, i byte) {
if len(s) > 128 || int(i) > len(s) {
t.SkipNow()
}
copy(memory[ptr1:], s)
memory[ptr1+len(s)] = 0
got := call(strrchr, ptr1+uint64(i), uint64(c))
want := bytes.LastIndexByte(term1(memory[ptr1+uint64(i):]), c)
if want >= 0 {
want = ptr1 + int(i) + want
} else {
want = 0
}
if uint32(got) != uint32(want) {
t.Errorf("strrchr(%q, %q) = %d, want %d",
s[i:], c, uint32(got), uint32(want))
}
})
}
func Fuzz_memcmp(f *testing.F) {
const s1 = compareTest1
const s2 = compareTest2
@@ -935,10 +1003,10 @@ func Fuzz_strncmp(f *testing.F) {
const s2 = compareTest2
for i := range len(compareTest1) + 1 {
f.Add(term(s1[i:]), term(s2[i:]), uint8(len(s1)))
f.Add(term(s1[i:]), term(s2[i:]), byte(len(s1)))
}
f.Fuzz(func(t *testing.T, s1, s2 string, n uint8) {
f.Fuzz(func(t *testing.T, s1, s2 string, n byte) {
if len(s1) > 128 || len(s2) > 128 {
t.SkipNow()
}
@@ -993,10 +1061,10 @@ func Fuzz_strncasecmp(f *testing.F) {
const s2 = compareTest2
for i := range len(compareTest1) + 1 {
f.Add(term(s1[i:]), term(s2[i:]), uint8(len(s1)))
f.Add(term(s1[i:]), term(s2[i:]), byte(len(s1)))
}
f.Fuzz(func(t *testing.T, s1, s2 string, n uint8) {
f.Fuzz(func(t *testing.T, s1, s2 string, n byte) {
if len(s1) > 128 || len(s2) > 128 {
t.SkipNow()
}
@@ -1022,32 +1090,32 @@ func Fuzz_strspn(f *testing.F) {
f.Add(t.haystk, t.needle)
}
f.Fuzz(func(t *testing.T, text, chars string) {
if len(text) > 128 || len(chars) > 128 {
f.Fuzz(func(t *testing.T, s, chars string) {
if len(s) > 128 || len(chars) > 128 {
t.SkipNow()
}
copy(memory[ptr1:], text)
copy(memory[ptr1:], s)
copy(memory[ptr2:], chars)
memory[ptr1+len(text)] = 0
memory[ptr1+len(s)] = 0
memory[ptr2+len(chars)] = 0
got := call(strspn, uint64(ptr1), uint64(ptr2))
text = term(text)
s = term(s)
chars = term(chars)
want := strings.IndexFunc(text, func(r rune) bool {
want := strings.IndexFunc(s, func(r rune) bool {
if uint32(r) >= utf8.RuneSelf {
t.Skip()
}
return strings.IndexByte(chars, byte(r)) < 0
})
if want < 0 {
want = len(text)
want = len(s)
}
if uint32(got) != uint32(want) {
t.Errorf("strspn(%q, %q) = %d, want %d",
text, chars, uint32(got), uint32(want))
s, chars, uint32(got), uint32(want))
}
})
}
@@ -1057,32 +1125,32 @@ func Fuzz_strcspn(f *testing.F) {
f.Add(t.haystk, t.needle)
}
f.Fuzz(func(t *testing.T, text, chars string) {
if len(text) > 128 || len(chars) > 128 {
f.Fuzz(func(t *testing.T, s, chars string) {
if len(s) > 128 || len(chars) > 128 {
t.SkipNow()
}
copy(memory[ptr1:], text)
if strings.ContainsFunc(chars, func(r rune) bool {
return uint32(r) >= utf8.RuneSelf
}) {
t.SkipNow()
}
copy(memory[ptr1:], s)
copy(memory[ptr2:], chars)
memory[ptr1+len(text)] = 0
memory[ptr1+len(s)] = 0
memory[ptr2+len(chars)] = 0
got := call(strcspn, uint64(ptr1), uint64(ptr2))
text = term(text)
s = term(s)
chars = term(chars)
want := strings.IndexFunc(text, func(r rune) bool {
if uint32(r) >= utf8.RuneSelf {
t.Skip()
}
return strings.IndexByte(chars, byte(r)) >= 0
})
want := strings.IndexAny(s, chars)
if want < 0 {
want = len(text)
want = len(s)
}
if uint32(got) != uint32(want) {
t.Errorf("strcspn(%q, %q) = %d, want %d",
text, chars, uint32(got), uint32(want))
s, chars, uint32(got), uint32(want))
}
})
}
@@ -1184,6 +1252,9 @@ func Fuzz_strcasestr(f *testing.F) {
if len(haystk) > 128 || len(needle) > 128 {
t.SkipNow()
}
if len(needle) == 0 {
t.Skip("musl bug")
}
copy(memory[ptr1:], haystk)
copy(memory[ptr2:], needle)
memory[ptr1+len(haystk)] = 0
@@ -1241,3 +1312,12 @@ func term[T interface{ []byte | string }](s T) T {
}
return s
}
func term1[T interface{ []byte | string }](s T) T {
for i, c := range []byte(s) {
if c == 0 {
return s[:i+1]
}
}
return s
}