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| author | Even Rouault <even.rouault@spatialys.com> | 2019-03-26 15:49:42 +0100 |
|---|---|---|
| committer | Even Rouault <even.rouault@spatialys.com> | 2019-03-26 15:49:42 +0100 |
| commit | e08b7bddd25349a24a294616e4d9c984c138e531 (patch) | |
| tree | 2bbc58a065084238be74c56b247d0646ba6e78eb | |
| parent | a199edb807eea4439b98865d5cd33fa7e3fd0706 (diff) | |
| download | PROJ-e08b7bddd25349a24a294616e4d9c984c138e531.tar.gz PROJ-e08b7bddd25349a24a294616e4d9c984c138e531.zip | |
omerc inverse: fix division
Test case https://oss-fuzz.com/testcase-detail/5739351578771456 of
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=13894
Credit to OSS Fuzz
| -rw-r--r-- | src/projections/omerc.cpp | 4 | ||||
| -rw-r--r-- | test/gie/builtins.gie | 7 |
2 files changed, 11 insertions, 0 deletions
diff --git a/src/projections/omerc.cpp b/src/projections/omerc.cpp index e9b7b4a0..c33f6489 100644 --- a/src/projections/omerc.cpp +++ b/src/projections/omerc.cpp @@ -97,6 +97,10 @@ static PJ_LP e_inverse (PJ_XY xy, PJ *P) { /* Ellipsoidal, inverse */ u = xy.y * Q->cosrot + xy.x * Q->sinrot + Q->u_0; } Qp = exp(- Q->BrA * v); + if( Qp == 0 ) { + proj_errno_set(P, PJD_ERR_INVALID_X_OR_Y); + return proj_coord_error().lp; + } Sp = .5 * (Qp - 1. / Qp); Tp = .5 * (Qp + 1. / Qp); Vp = sin(Q->BrA * u); diff --git a/test/gie/builtins.gie b/test/gie/builtins.gie index 0855bec7..a4fb5055 100644 --- a/test/gie/builtins.gie +++ b/test/gie/builtins.gie @@ -3801,6 +3801,13 @@ expect 0.000898315 -0.001808739 accept -200 -100 expect -0.000898315 -0.001808739 +------------------------------------------------------------------------------- +operation +proj=omerc +R=1 +lat_0=1 +lat_1=2 +no_rot +------------------------------------------------------------------------------- +direction inverse +accept 0 1e200 +expect failure errno invalid_x_or_y + =============================================================================== Ortelius Oval |