<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><div><div class=""></div><div class=""><br class=""></div><div class="">I also have crashes without error messages (even in the nightly build) if the .msh files contains disjoint geometries of the same physical marker, that is a planar graph with 4 end points = two graphs with two end points each but of the same physical attribute number:</div><div class="">If the upper and lower wall of the channel are both exported to the .msh file using elm-type 1 with attribute „5“ to denote no-slip walls, for example</div><div class="">$Elements</div><div class="">...</div><div class=""><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">9373 1 2 5 5 185 186</span></div></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">...</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">$EndElements</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">then gmsh crashes without error (segfault?) while doing the CreateTopology step. See attached files, test_5.msh contains this situation (upper and lower wall = two lines with attributes 5 5), where as test_234.msh is the same file without those 2-Point line elements. The crash does not happen if the upper and lower channel walls have separate attributes, e.g.</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">51 51</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">for upper</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">52 52</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">for lower.</span></div><div class=""><br class=""></div></div></body></html>