On gcc-trunk my project fails with the following ICE. Whatever it means...
/home/piotr.wyderski/topnotch/vm/test/main.cpp: In function 'int main(int, char**)': /home/piotr.wyderski/topnotch/vm/test/main.cpp:32: error: Wrong prev_try pointer in EH region 123 Eh tree: 100 catch tree_label:<L141> may_contain_throw prev: 97 type: 102 must_not_throw tree_label:<L143> may_contain_throw 101 cleanup tree_label:<L142> may_contain_throw 97 catch tree_label:<L137> may_contain_throw prev: 94 next 100 type:struct exception 99 must_not_throw tree_label:<L139> may_contain_throw 98 cleanup tree_label:<L138> may_contain_throw 94 catch tree_label:<L134> may_contain_throw next 97 type:struct rc_ptr 96 must_not_throw tree_label:<L136> may_contain_throw 95 cleanup tree_label:<L135> may_contain_throw 1 try may_contain_throw catch regions: 94 97 100 93 must_not_throw tree_label:<L132> may_contain_throw 2 cleanup tree_label:<L131> may_contain_throw prev try:1 92 must_not_throw tree_label:<L129> may_contain_throw 3 cleanup tree_label:<L128> may_contain_throw prev try:1 91 must_not_throw tree_label:<L126> may_contain_throw 4 cleanup tree_label:<L125> may_contain_throw prev try:1 90 must_not_throw tree_label:<L123> may_contain_throw 5 cleanup tree_label:<L122> may_contain_throw prev try:1 89 must_not_throw tree_label:<L120> may_contain_throw 6 cleanup tree_label:<L119> may_contain_throw prev try:1 88 must_not_throw tree_label:<L117> may_contain_throw 7 cleanup tree_label:<L116> may_contain_throw prev try:1 87 must_not_throw tree_label:<L114> may_contain_throw 8 cleanup tree_label:<L113> may_contain_throw prev try:1 86 must_not_throw tree_label:<L111> may_contain_throw 9 cleanup tree_label:<L110> may_contain_throw prev try:1 85 must_not_throw tree_label:<L108> may_contain_throw 10 cleanup tree_label:<L107> may_contain_throw prev try:1 84 must_not_throw tree_label:<L105> may_contain_throw 11 cleanup tree_label:<L104> may_contain_throw prev try:1 83 must_not_throw tree_label:<L102> may_contain_throw 34 cleanup tree_label:<L101> may_contain_throw prev try:1 82 must_not_throw tree_label:<L99> may_contain_throw 37 cleanup tree_label:<L98> may_contain_throw prev try:1 81 must_not_throw tree_label:<L96> may_contain_throw 40 cleanup tree_label:<L95> may_contain_throw prev try:1 80 must_not_throw tree_label:<L93> may_contain_throw 43 cleanup tree_label:<L92> may_contain_throw prev try:1 79 must_not_throw tree_label:<L90> may_contain_throw 46 cleanup tree_label:<L89> may_contain_throw prev try:1 78 must_not_throw tree_label:<L87> may_contain_throw 49 cleanup tree_label:<L86> may_contain_throw prev try:1 77 must_not_throw tree_label:<L84> may_contain_throw 52 cleanup tree_label:<L83> may_contain_throw prev try:1 76 must_not_throw tree_label:<L81> may_contain_throw 55 cleanup tree_label:<L80> may_contain_throw prev try:1 75 must_not_throw 56 cleanup tree_label:<L78> may_contain_throw prev try:1 74 must_not_throw tree_label:<L76> may_contain_throw 57 cleanup tree_label:<L75> may_contain_throw prev try:1 73 must_not_throw tree_label:<L73> may_contain_throw 58 cleanup tree_label:<L72> may_contain_throw prev try:1 72 must_not_throw tree_label:<L70> may_contain_throw 59 cleanup tree_label:<L69> may_contain_throw prev try:1 71 must_not_throw tree_label:<L67> may_contain_throw 60 cleanup tree_label:<L66> may_contain_throw prev try:1 70 must_not_throw tree_label:<L64> may_contain_throw 61 cleanup tree_label:<L63> may_contain_throw prev try:1 69 must_not_throw tree_label:<L61> may_contain_throw 62 cleanup tree_label:<L60> may_contain_throw prev try:1 68 must_not_throw tree_label:<L58> may_contain_throw 63 cleanup tree_label:<L57> may_contain_throw prev try:1 67 must_not_throw tree_label:<L55> may_contain_throw 64 cleanup tree_label:<L54> may_contain_throw prev try:1 66 must_not_throw tree_label:<L52> may_contain_throw 65 cleanup tree_label:<L51> may_contain_throw prev try:1 54 must_not_throw tree_label:<L49> may_contain_throw 53 cleanup tree_label:<L48> may_contain_throw prev try:1 51 must_not_throw tree_label:<L46> may_contain_throw 50 cleanup tree_label:<L45> may_contain_throw prev try:1 48 must_not_throw tree_label:<L43> may_contain_throw 47 cleanup tree_label:<L42> may_contain_throw prev try:1 45 must_not_throw tree_label:<L40> may_contain_throw 44 cleanup tree_label:<L39> may_contain_throw prev try:1 42 must_not_throw 41 cleanup tree_label:<L37> may_contain_throw prev try:1 39 must_not_throw 38 cleanup tree_label:<L35> may_contain_throw prev try:1 36 must_not_throw 35 cleanup tree_label:<L33> may_contain_throw prev try:1 33 must_not_throw tree_label:<L31> may_contain_throw 12 cleanup tree_label:<L30> may_contain_throw prev try:1 32 must_not_throw tree_label:<L28> may_contain_throw 31 cleanup tree_label:<L27> may_contain_throw prev try:1 30 must_not_throw tree_label:<L25> may_contain_throw 13 cleanup tree_label:<L24> may_contain_throw prev try:1 29 must_not_throw tree_label:<L22> may_contain_throw 28 cleanup tree_label:<L21> may_contain_throw prev try:1 27 must_not_throw tree_label:<L19> may_contain_throw 14 cleanup tree_label:<L18> may_contain_throw prev try:1 26 must_not_throw tree_label:<L16> may_contain_throw 25 cleanup tree_label:<L15> may_contain_throw prev try:1 24 must_not_throw tree_label:<L13> may_contain_throw 15 cleanup tree_label:<L12> may_contain_throw prev try:1 23 must_not_throw tree_label:<L10> may_contain_throw 22 cleanup tree_label:<L9> may_contain_throw prev try:1 21 must_not_throw tree_label:<L7> may_contain_throw 16 cleanup tree_label:<L6> may_contain_throw prev try:1 20 must_not_throw tree_label:<L4> may_contain_throw 19 cleanup tree_label:<L3> may_contain_throw prev try:1 18 must_not_throw tree_label:<L1> may_contain_throw 17 cleanup tree_label:<L0> may_contain_throw prev try:1 115 must_not_throw tree_label:<D.122931> may_contain_throw also known as:124, 125, 126, 127, 128 123 cleanup tree_label:<D.122937> may_contain_throw prev try:1 118 must_not_throw tree_label:<D.122933> may_contain_throw 120 must_not_throw tree_label:<D.122935> may_contain_throw 122 must_not_throw tree_label:<D.122928> may_contain_throw also known as:112, 116 111 cleanup tree_label:<D.122927> may_contain_throw prev try:1 113 cleanup tree_label:<D.122929> may_contain_throw prev try:1 114 cleanup tree_label:<D.122930> may_contain_throw prev try:1 117 cleanup tree_label:<D.122932> may_contain_throw prev try:1 119 cleanup tree_label:<D.122934> may_contain_throw prev try:1 121 cleanup tree_label:<D.122936> may_contain_throw prev try:1 110 must_not_throw may_contain_throw also known as:108 107 cleanup tree_label:<L149> may_contain_throw prev try:1 109 cleanup tree_label:<L148> may_contain_throw prev try:1 106 must_not_throw may_contain_throw 105 cleanup tree_label:<L147> may_contain_throw prev try:1 104 must_not_throw may_contain_throw 103 cleanup tree_label:<L146> may_contain_throw prev try:1 /home/piotr.wyderski/topnotch/vm/test/main.cpp:32: internal compiler error: verify_eh_tree failed Please submit a full bug report, with preprocessed source if appropriate.