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| author | Even Rouault <even.rouault@spatialys.com> | 2019-03-29 22:09:16 +0000 |
|---|---|---|
| committer | Even Rouault <even.rouault@spatialys.com> | 2019-03-29 22:31:57 +0000 |
| commit | 969c654c2db3c169deb3e70e43fbc764f2ffeecb (patch) | |
| tree | 71eb72bb373e4b1a1c59791334411826be90f80e /src | |
| parent | da1940a6088d6b770939dd0e93a82e5ee1ab2f18 (diff) | |
| download | PROJ-969c654c2db3c169deb3e70e43fbc764f2ffeecb.tar.gz PROJ-969c654c2db3c169deb3e70e43fbc764f2ffeecb.zip | |
tpeqd: avoid division by zero
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=13948
Credit to OSS Fuzz
Diffstat (limited to 'src')
| -rw-r--r-- | src/projections/tpeqd.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/projections/tpeqd.cpp b/src/projections/tpeqd.cpp index 20921de4..9904bb8c 100644 --- a/src/projections/tpeqd.cpp +++ b/src/projections/tpeqd.cpp @@ -87,6 +87,10 @@ PJ *PROJECTION(tpeqd) { Q->sc = Q->sp1 * Q->cp2; Q->ccs = Q->cp1 * Q->cp2 * sin(Q->dlam2); Q->z02 = aacos(P->ctx, Q->sp1 * Q->sp2 + Q->cp1 * Q->cp2 * cos (Q->dlam2)); + if( Q->z02 == 0.0 ) { + // Actually happens when both lat_1 = lat_2 and |lat_1| = 90 + return pj_default_destructor(P, PJD_ERR_LAT_1_OR_2_ZERO_OR_90); + } Q->hz0 = .5 * Q->z02; A12 = atan2(Q->cp2 * sin (Q->dlam2), Q->cp1 * Q->sp2 - Q->sp1 * Q->cp2 * cos (Q->dlam2)); |