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[subset] Add fuzzing of gsub closure to hb-subset-fuzzer.

This commit is contained in:
Garret Rieger 2018-06-07 14:39:03 -07:00
parent feb23892a3
commit 37eab27be3
1 changed files with 20 additions and 7 deletions
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25
test/fuzzing/hb-subset-fuzzer.cc
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@ -6,16 +6,17 @@
#include "hb-subset.h"
void trySubset (hb_face_t *face,
const hb_codepoint_t text[],
int text_length,
bool drop_hints)
bool drop_hints,
bool drop_ot_layout)
{
hb_subset_profile_t *profile = hb_subset_profile_create ();
hb_subset_input_t *input = hb_subset_input_create_or_fail ();
*hb_subset_input_drop_hints (input) = drop_hints;
*hb_subset_input_drop_ot_layout (input) = drop_ot_layout;
hb_set_t *codepoints = hb_subset_input_unicode_set (input);
for (int i = 0; i < text_length; i++)
@ -30,6 +31,20 @@ void trySubset (hb_face_t *face,
hb_subset_profile_destroy (profile);
}
void trySubset (hb_face_t *face,
const hb_codepoint_t text[],
int text_length)
{
for (unsigned int drop_hints = 0; drop_hints < 2; drop_hints++)
{
for (unsigned int drop_ot_layout = 0; drop_ot_layout < 2; drop_ot_layout++)
{
trySubset (face, text, text_length,
(bool) drop_hints, (bool) drop_ot_layout);
}
}
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
hb_blob_t *blob = hb_blob_create ((const char *)data, size,
@ -42,8 +57,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
'3', '@', '_', '%', '&', ')', '*', '$', '!'
};
trySubset (face, text, sizeof (text) / sizeof (hb_codepoint_t), true);
trySubset (face, text, sizeof (text) / sizeof (hb_codepoint_t), false);
trySubset (face, text, sizeof (text) / sizeof (hb_codepoint_t));
hb_codepoint_t text_from_data[16];
if (size > sizeof(text_from_data)) {
@ -51,8 +65,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
data + size - sizeof(text_from_data),
sizeof(text_from_data));
unsigned int text_size = sizeof (text_from_data) / sizeof (hb_codepoint_t);
trySubset (face, text_from_data, text_size, true);
trySubset (face, text_from_data, text_size, false);
trySubset (face, text_from_data, text_size);
}
hb_face_destroy (face);