diff options
| author | Even Rouault <even.rouault@mines-paris.org> | 2019-04-11 12:45:33 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-04-11 12:45:33 +0200 |
| commit | 2117c151d62cd0267068075b9e7cf7cc0d404a63 (patch) | |
| tree | b90bd6f8e54a2f983d1937622de467c80ed49357 /src/projections/lsat.cpp | |
| parent | fb125618fd18f112ed6f37662b021d07a602ff90 (diff) | |
| parent | c1e730312965831e6b9c2093677a67716c198622 (diff) | |
| download | PROJ-2117c151d62cd0267068075b9e7cf7cc0d404a63.tar.gz PROJ-2117c151d62cd0267068075b9e7cf7cc0d404a63.zip | |
Merge pull request #1422 from rouault/fix_ossfuzz_14135_and_al
Fix ossfuzz 14135, 14136 and 14138
Diffstat (limited to 'src/projections/lsat.cpp')
| -rw-r--r-- | src/projections/lsat.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/projections/lsat.cpp b/src/projections/lsat.cpp index 5b7520d3..f9eec1b9 100644 --- a/src/projections/lsat.cpp +++ b/src/projections/lsat.cpp @@ -112,7 +112,6 @@ static PJ_LP e_inverse (PJ_XY xy, PJ *P) { /* Ellipsoidal, inverse */ struct pj_opaque *Q = static_cast<struct pj_opaque*>(P->opaque); int nn; double lamt, sdsq, s, lamdp, phidp, sppsq, dd, sd, sl, fac, scl, sav, spp; - lamdp = xy.x / Q->b; nn = 50; do { @@ -135,10 +134,14 @@ static PJ_LP e_inverse (PJ_XY xy, PJ *P) { /* Ellipsoidal, inverse */ lamdp -= TOL; spp = sin(phidp); sppsq = spp * spp; + const double denom = 1. - sppsq * (1. + Q->u); + if( denom == 0.0 ) { + proj_errno_set(P, PJD_ERR_INVALID_X_OR_Y); + return proj_coord_error().lp; + } lamt = atan(((1. - sppsq * P->rone_es) * tan(lamdp) * Q->ca - spp * Q->sa * sqrt((1. + Q->q * dd) * ( - 1. - sppsq) - sppsq * Q->u) / cos(lamdp)) / (1. - sppsq - * (1. + Q->u))); + 1. - sppsq) - sppsq * Q->u) / cos(lamdp)) / denom); sl = lamt >= 0. ? 1. : -1.; scl = cos(lamdp) >= 0. ? 1. : -1; lamt -= M_HALFPI * (1. - scl) * sl; |