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| author | Pierre Joye <pierre.php@gmail.com> | 2021-08-26 22:40:15 +0700 |
|---|---|---|
| committer | Pierre Joye <pierre.php@gmail.com> | 2021-08-26 22:40:15 +0700 |
| commit | 13d3b67822f9e8b2f6cfc96933abeef054d37085 (patch) | |
| tree | ec7383b9e604691603727ea5b786dfb2bbba9d58 /src | |
| parent | 63070b49e2f7380b11bf8d2f6f8cdf49cbe8076d (diff) | |
| download | libgd-13d3b67822f9e8b2f6cfc96933abeef054d37085.tar.gz | |
Fix #402, negative determinant fails, only 0 or not finite should fail
Diffstat (limited to 'src')
| -rw-r--r-- | src/gd_matrix.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/gd_matrix.c b/src/gd_matrix.c index def3f3c..7ee2e6f 100644 --- a/src/gd_matrix.c +++ b/src/gd_matrix.c @@ -84,7 +84,10 @@ BGD_DECLARE(int) gdAffineInvert (double dst[6], const double src[6]) { double r_det = (src[0] * src[3] - src[1] * src[2]); - if (fabs(r_det) <= 0.0) { + if (!isfinite(r_det)) { + return GD_FALSE; + } + if (r_det == 0) { return GD_FALSE; } |