Hi folks,
I have been getting a very weird crash in a switch statement that disappears when I compile natively. Basically when my code exits the switch statement (even if I comment out all executable code), the return from the function jumps to a random code address. It is therefore stack corruption, but it appears that it is the switch statement that causes it, and not any code in the switch statement.
My code does very little and is certainly not to blame as the same crash occurs when I comment out all executable code. The crash also disappears if I remove a lot of the switch cases, even though they are never called. The switch statement itself has a large number of cases, as it is used to generate focus help strings for a dialog box with many tab pages and dialog items. Testing reveals that the stack corruption occurs around the 280th case statement, if I comment out code passed this point then it doesn't corrupt the call stack.
Since some of the case statements are grouped together, I would guess that there is a limitation of around 256 unique case statements allowed in an MDL switch statement before stack corruption occurs. Has anyone seen a similar thing? I am guessing no one at Bentley will bother to fix an MDL compiler bug since development seems to have halted in MDL, but I thought I would bring this limitation to the attention of other programmers who might waste hours like I did trying to find the source of the problem. It can be replicated on MS2004, XM and V8i when compiled using MCOMP, but not when compiled with VC++.
Cheers.
I can't regenerate your situation. I created a switch statement with 300 cases in my .mc file, it can work correctly. Have you specified -s parameter in your MKE file ? If it is true, please remove it.
HTH, Yongan Fu
Hi Yongan,
Yes I have the stack size set as:
-s9000000
I kept having to bump this up in previous versions of MicroStation or I risked exhausting the stack during batch processing operations over multiple DGNs. If the stack option is no longer required, can you confirm which version of MicroStation it became redundant in, so I don't break backwards compatibility? I know it was required under MicroStation J; not sure how long after that though.
In any case this is a red-herring, I have since removed the stack setting, cleaned and rebuilt and still get the crash. When I break up the switch statement again it stops crashing. Re-enabled and again crashes, so there is no doubt it is the switch statement blowing away the stack. Did you make sure to put a printf() or similar for each case? Otherwise I think the compiler may optimise your switch code away. If you still can't replicate, please send me your code and I will test here.
--Piers PorterAltiva Software
Piers,
I did some research with the developer of the compiler code. We would like to know if your cases are consecutive integers or some "random" spacing between values?
Rgds.
mark anderson [Bentley]
Visit me at https://communities.bentley.com/communities/other_communities/bentley_innovation/default.aspx
Hi Piers,
My test case is as below. Thanks for my editor's function of column mode.
int myCase = 268; char myStr[128]; mdlDialog_dmsgsPrint ("before switch"); switch (myCase) { case 0: sprintf(myStr, "case 0: myStr=%d", 0); break; case 1: sprintf(myStr, "case 1: myStr=%d", 1); break; case 2: sprintf(myStr, "case 2: myStr=%d", 2); break; case 3: sprintf(myStr, "case 3: myStr=%d", 3); break; case 4: sprintf(myStr, "case 4: myStr=%d", 4); break; case 5: sprintf(myStr, "case 5: myStr=%d", 5); break; case 6: sprintf(myStr, "case 6: myStr=%d", 6); break; case 7: sprintf(myStr, "case 7: myStr=%d", 7); break; case 8: sprintf(myStr, "case 8: myStr=%d", 8); break; case 9: sprintf(myStr, "case 9: myStr=%d", 9); break; case 10: sprintf(myStr, "case 10: myStr=%d", 10); break; case 11: sprintf(myStr, "case 11: myStr=%d", 11); break; case 12: sprintf(myStr, "case 12: myStr=%d", 12); break; case 13: sprintf(myStr, "case 13: myStr=%d", 13); break; case 14: sprintf(myStr, "case 14: myStr=%d", 14); break; case 15: sprintf(myStr, "case 15: myStr=%d", 15); break; case 16: sprintf(myStr, "case 16: myStr=%d", 16); break; case 17: sprintf(myStr, "case 17: myStr=%d", 17); break; case 18: sprintf(myStr, "case 18: myStr=%d", 18); break; case 19: sprintf(myStr, "case 19: myStr=%d", 19); break; case 20: sprintf(myStr, "case 20: myStr=%d", 20); break; case 21: sprintf(myStr, "case 21: myStr=%d", 21); break; case 22: sprintf(myStr, "case 22: myStr=%d", 22); break; case 23: sprintf(myStr, "case 23: myStr=%d", 23); break; case 24: sprintf(myStr, "case 24: myStr=%d", 24); break; case 25: sprintf(myStr, "case 25: myStr=%d", 25); break; case 26: sprintf(myStr, "case 26: myStr=%d", 26); break; case 27: sprintf(myStr, "case 27: myStr=%d", 27); break; case 28: sprintf(myStr, "case 28: myStr=%d", 28); break; case 29: sprintf(myStr, "case 29: myStr=%d", 29); break; case 30: sprintf(myStr, "case 30: myStr=%d", 30); break; case 31: sprintf(myStr, "case 31: myStr=%d", 31); break; case 32: sprintf(myStr, "case 32: myStr=%d", 32); break; case 33: sprintf(myStr, "case 33: myStr=%d", 33); break; case 34: sprintf(myStr, "case 34: myStr=%d", 34); break; case 35: sprintf(myStr, "case 35: myStr=%d", 35); break; case 36: sprintf(myStr, "case 36: myStr=%d", 36); break; case 37: sprintf(myStr, "case 37: myStr=%d", 37); break; case 38: sprintf(myStr, "case 38: myStr=%d", 38); break; case 39: sprintf(myStr, "case 39: myStr=%d", 39); break; case 40: sprintf(myStr, "case 40: myStr=%d", 40); break; case 41: sprintf(myStr, "case 41: myStr=%d", 41); break; case 42: sprintf(myStr, "case 42: myStr=%d", 42); break; case 43: sprintf(myStr, "case 43: myStr=%d", 43); break; case 44: sprintf(myStr, "case 44: myStr=%d", 44); break; case 45: sprintf(myStr, "case 45: myStr=%d", 45); break; case 46: sprintf(myStr, "case 46: myStr=%d", 46); break; case 47: sprintf(myStr, "case 47: myStr=%d", 47); break; case 48: sprintf(myStr, "case 48: myStr=%d", 48); break; case 49: sprintf(myStr, "case 49: myStr=%d", 49); break; case 50: sprintf(myStr, "case 50: myStr=%d", 50); break; case 51: sprintf(myStr, "case 51: myStr=%d", 51); break; case 52: sprintf(myStr, "case 52: myStr=%d", 52); break; case 53: sprintf(myStr, "case 53: myStr=%d", 53); break; case 54: sprintf(myStr, "case 54: myStr=%d", 54); break; case 55: sprintf(myStr, "case 55: myStr=%d", 55); break; case 56: sprintf(myStr, "case 56: myStr=%d", 56); break; case 57: sprintf(myStr, "case 57: myStr=%d", 57); break; case 58: sprintf(myStr, "case 58: myStr=%d", 58); break; case 59: sprintf(myStr, "case 59: myStr=%d", 59); break; case 60: sprintf(myStr, "case 60: myStr=%d", 60); break; case 61: sprintf(myStr, "case 61: myStr=%d", 61); break; case 62: sprintf(myStr, "case 62: myStr=%d", 62); break; case 63: sprintf(myStr, "case 63: myStr=%d", 63); break; case 64: sprintf(myStr, "case 64: myStr=%d", 64); break; case 65: sprintf(myStr, "case 65: myStr=%d", 65); break; case 66: sprintf(myStr, "case 66: myStr=%d", 66); break; case 67: sprintf(myStr, "case 67: myStr=%d", 67); break; case 68: sprintf(myStr, "case 68: myStr=%d", 68); break; case 69: sprintf(myStr, "case 69: myStr=%d", 69); break; case 70: sprintf(myStr, "case 70: myStr=%d", 70); break; case 71: sprintf(myStr, "case 71: myStr=%d", 71); break; case 72: sprintf(myStr, "case 72: myStr=%d", 72); break; case 73: sprintf(myStr, "case 73: myStr=%d", 73); break; case 74: sprintf(myStr, "case 74: myStr=%d", 74); break; case 75: sprintf(myStr, "case 75: myStr=%d", 75); break; case 76: sprintf(myStr, "case 76: myStr=%d", 76); break; case 77: sprintf(myStr, "case 77: myStr=%d", 77); break; case 78: sprintf(myStr, "case 78: myStr=%d", 78); break; case 79: sprintf(myStr, "case 79: myStr=%d", 79); break; case 80: sprintf(myStr, "case 80: myStr=%d", 80); break; case 81: sprintf(myStr, "case 81: myStr=%d", 81); break; case 82: sprintf(myStr, "case 82: myStr=%d", 82); break; case 83: sprintf(myStr, "case 83: myStr=%d", 83); break; case 84: sprintf(myStr, "case 84: myStr=%d", 84); break; case 85: sprintf(myStr, "case 85: myStr=%d", 85); break; case 86: sprintf(myStr, "case 86: myStr=%d", 86); break; case 87: sprintf(myStr, "case 87: myStr=%d", 87); break; case 88: sprintf(myStr, "case 88: myStr=%d", 88); break; case 89: sprintf(myStr, "case 89: myStr=%d", 89); break; case 90: sprintf(myStr, "case 90: myStr=%d", 90); break; case 91: sprintf(myStr, "case 91: myStr=%d", 91); break; case 92: sprintf(myStr, "case 92: myStr=%d", 92); break; case 93: sprintf(myStr, "case 93: myStr=%d", 93); break; case 94: sprintf(myStr, "case 94: myStr=%d", 94); break; case 95: sprintf(myStr, "case 95: myStr=%d", 95); break; case 96: sprintf(myStr, "case 96: myStr=%d", 96); break; case 97: sprintf(myStr, "case 97: myStr=%d", 97); break; case 98: sprintf(myStr, "case 98: myStr=%d", 98); break; case 99: sprintf(myStr, "case 99: myStr=%d", 99); break; case 100: sprintf(myStr, "case 100: myStr=%d", 100); break; case 101: sprintf(myStr, "case 101: myStr=%d", 101); break; case 102: sprintf(myStr, "case 102: myStr=%d", 102); break; case 103: sprintf(myStr, "case 103: myStr=%d", 103); break; case 104: sprintf(myStr, "case 104: myStr=%d", 104); break; case 105: sprintf(myStr, "case 105: myStr=%d", 105); break; case 106: sprintf(myStr, "case 106: myStr=%d", 106); break; case 107: sprintf(myStr, "case 107: myStr=%d", 107); break; case 108: sprintf(myStr, "case 108: myStr=%d", 108); break; case 109: sprintf(myStr, "case 109: myStr=%d", 109); break; case 110: sprintf(myStr, "case 110: myStr=%d", 110); break; case 111: sprintf(myStr, "case 111: myStr=%d", 111); break; case 112: sprintf(myStr, "case 112: myStr=%d", 112); break; case 113: sprintf(myStr, "case 113: myStr=%d", 113); break; case 114: sprintf(myStr, "case 114: myStr=%d", 114); break; case 115: sprintf(myStr, "case 115: myStr=%d", 115); break; case 116: sprintf(myStr, "case 116: myStr=%d", 116); break; case 117: sprintf(myStr, "case 117: myStr=%d", 117); break; case 118: sprintf(myStr, "case 118: myStr=%d", 118); break; case 119: sprintf(myStr, "case 119: myStr=%d", 119); break; case 120: sprintf(myStr, "case 120: myStr=%d", 120); break; case 121: sprintf(myStr, "case 121: myStr=%d", 121); break; case 122: sprintf(myStr, "case 122: myStr=%d", 122); break; case 123: sprintf(myStr, "case 123: myStr=%d", 123); break; case 124: sprintf(myStr, "case 124: myStr=%d", 124); break; case 125: sprintf(myStr, "case 125: myStr=%d", 125); break; case 126: sprintf(myStr, "case 126: myStr=%d", 126); break; case 127: sprintf(myStr, "case 127: myStr=%d", 127); break; case 128: sprintf(myStr, "case 128: myStr=%d", 128); break; case 129: sprintf(myStr, "case 129: myStr=%d", 129); break; case 130: sprintf(myStr, "case 130: myStr=%d", 130); break; case 131: sprintf(myStr, "case 131: myStr=%d", 131); break; case 132: sprintf(myStr, "case 132: myStr=%d", 132); break; case 133: sprintf(myStr, "case 133: myStr=%d", 133); break; case 134: sprintf(myStr, "case 134: myStr=%d", 134); break; case 135: sprintf(myStr, "case 135: myStr=%d", 135); break; case 136: sprintf(myStr, "case 136: myStr=%d", 136); break; case 137: sprintf(myStr, "case 137: myStr=%d", 137); break; case 138: sprintf(myStr, "case 138: myStr=%d", 138); break; case 139: sprintf(myStr, "case 139: myStr=%d", 139); break; case 140: sprintf(myStr, "case 140: myStr=%d", 140); break; case 141: sprintf(myStr, "case 141: myStr=%d", 141); break; case 142: sprintf(myStr, "case 142: myStr=%d", 142); break; case 143: sprintf(myStr, "case 143: myStr=%d", 143); break; case 144: sprintf(myStr, "case 144: myStr=%d", 144); break; case 145: sprintf(myStr, "case 145: myStr=%d", 145); break; case 146: sprintf(myStr, "case 146: myStr=%d", 146); break; case 147: sprintf(myStr, "case 147: myStr=%d", 147); break; case 148: sprintf(myStr, "case 148: myStr=%d", 148); break; case 149: sprintf(myStr, "case 149: myStr=%d", 149); break; case 150: sprintf(myStr, "case 150: myStr=%d", 150); break; case 151: sprintf(myStr, "case 151: myStr=%d", 151); break; case 152: sprintf(myStr, "case 152: myStr=%d", 152); break; case 153: sprintf(myStr, "case 153: myStr=%d", 153); break; case 154: sprintf(myStr, "case 154: myStr=%d", 154); break; case 155: sprintf(myStr, "case 155: myStr=%d", 155); break; case 156: sprintf(myStr, "case 156: myStr=%d", 156); break; case 157: sprintf(myStr, "case 157: myStr=%d", 157); break; case 158: sprintf(myStr, "case 158: myStr=%d", 158); break; case 159: sprintf(myStr, "case 159: myStr=%d", 159); break; case 160: sprintf(myStr, "case 160: myStr=%d", 160); break; case 161: sprintf(myStr, "case 161: myStr=%d", 161); break; case 162: sprintf(myStr, "case 162: myStr=%d", 162); break; case 163: sprintf(myStr, "case 163: myStr=%d", 163); break; case 164: sprintf(myStr, "case 164: myStr=%d", 164); break; case 165: sprintf(myStr, "case 165: myStr=%d", 165); break; case 166: sprintf(myStr, "case 166: myStr=%d", 166); break; case 167: sprintf(myStr, "case 167: myStr=%d", 167); break; case 168: sprintf(myStr, "case 168: myStr=%d", 168); break; case 169: sprintf(myStr, "case 169: myStr=%d", 169); break; case 170: sprintf(myStr, "case 170: myStr=%d", 170); break; case 171: sprintf(myStr, "case 171: myStr=%d", 171); break; case 172: sprintf(myStr, "case 172: myStr=%d", 172); break; case 173: sprintf(myStr, "case 173: myStr=%d", 173); break; case 174: sprintf(myStr, "case 174: myStr=%d", 174); break; case 175: sprintf(myStr, "case 175: myStr=%d", 175); break; case 176: sprintf(myStr, "case 176: myStr=%d", 176); break; case 177: sprintf(myStr, "case 177: myStr=%d", 177); break; case 178: sprintf(myStr, "case 178: myStr=%d", 178); break; case 179: sprintf(myStr, "case 179: myStr=%d", 179); break; case 180: sprintf(myStr, "case 180: myStr=%d", 180); break; case 181: sprintf(myStr, "case 181: myStr=%d", 181); break; case 182: sprintf(myStr, "case 182: myStr=%d", 182); break; case 183: sprintf(myStr, "case 183: myStr=%d", 183); break; case 184: sprintf(myStr, "case 184: myStr=%d", 184); break; case 185: sprintf(myStr, "case 185: myStr=%d", 185); break; case 186: sprintf(myStr, "case 186: myStr=%d", 186); break; case 187: sprintf(myStr, "case 187: myStr=%d", 187); break; case 188: sprintf(myStr, "case 188: myStr=%d", 188); break; case 189: sprintf(myStr, "case 189: myStr=%d", 189); break; case 190: sprintf(myStr, "case 190: myStr=%d", 190); break; case 191: sprintf(myStr, "case 191: myStr=%d", 191); break; case 192: sprintf(myStr, "case 192: myStr=%d", 192); break; case 193: sprintf(myStr, "case 193: myStr=%d", 193); break; case 194: sprintf(myStr, "case 194: myStr=%d", 194); break; case 195: sprintf(myStr, "case 195: myStr=%d", 195); break; case 196: sprintf(myStr, "case 196: myStr=%d", 196); break; case 197: sprintf(myStr, "case 197: myStr=%d", 197); break; case 198: sprintf(myStr, "case 198: myStr=%d", 198); break; case 199: sprintf(myStr, "case 199: myStr=%d", 199); break; case 200: sprintf(myStr, "case 200: myStr=%d", 200); break; case 201: sprintf(myStr, "case 201: myStr=%d", 201); break; case 202: sprintf(myStr, "case 202: myStr=%d", 202); break; case 203: sprintf(myStr, "case 203: myStr=%d", 203); break; case 204: sprintf(myStr, "case 204: myStr=%d", 204); break; case 205: sprintf(myStr, "case 205: myStr=%d", 205); break; case 206: sprintf(myStr, "case 206: myStr=%d", 206); break; case 207: sprintf(myStr, "case 207: myStr=%d", 207); break; case 208: sprintf(myStr, "case 208: myStr=%d", 208); break; case 209: sprintf(myStr, "case 209: myStr=%d", 209); break; case 210: sprintf(myStr, "case 210: myStr=%d", 210); break; case 211: sprintf(myStr, "case 211: myStr=%d", 211); break; case 212: sprintf(myStr, "case 212: myStr=%d", 212); break; case 213: sprintf(myStr, "case 213: myStr=%d", 213); break; case 214: sprintf(myStr, "case 214: myStr=%d", 214); break; case 215: sprintf(myStr, "case 215: myStr=%d", 215); break; case 216: sprintf(myStr, "case 216: myStr=%d", 216); break; case 217: sprintf(myStr, "case 217: myStr=%d", 217); break; case 218: sprintf(myStr, "case 218: myStr=%d", 218); break; case 219: sprintf(myStr, "case 219: myStr=%d", 219); break; case 220: sprintf(myStr, "case 220: myStr=%d", 220); break; case 221: sprintf(myStr, "case 221: myStr=%d", 221); break; case 222: sprintf(myStr, "case 222: myStr=%d", 222); break; case 223: sprintf(myStr, "case 223: myStr=%d", 223); break; case 224: sprintf(myStr, "case 224: myStr=%d", 224); break; case 225: sprintf(myStr, "case 225: myStr=%d", 225); break; case 226: sprintf(myStr, "case 226: myStr=%d", 226); break; case 227: sprintf(myStr, "case 227: myStr=%d", 227); break; case 228: sprintf(myStr, "case 228: myStr=%d", 228); break; case 229: sprintf(myStr, "case 229: myStr=%d", 229); break; case 230: sprintf(myStr, "case 230: myStr=%d", 230); break; case 231: sprintf(myStr, "case 231: myStr=%d", 231); break; case 232: sprintf(myStr, "case 232: myStr=%d", 232); break; case 233: sprintf(myStr, "case 233: myStr=%d", 233); break; case 234: sprintf(myStr, "case 234: myStr=%d", 234); break; case 235: sprintf(myStr, "case 235: myStr=%d", 235); break; case 236: sprintf(myStr, "case 236: myStr=%d", 236); break; case 237: sprintf(myStr, "case 237: myStr=%d", 237); break; case 238: sprintf(myStr, "case 238: myStr=%d", 238); break; case 239: sprintf(myStr, "case 239: myStr=%d", 239); break; case 240: sprintf(myStr, "case 240: myStr=%d", 240); break; case 241: sprintf(myStr, "case 241: myStr=%d", 241); break; case 242: sprintf(myStr, "case 242: myStr=%d", 242); break; case 243: sprintf(myStr, "case 243: myStr=%d", 243); break; case 244: sprintf(myStr, "case 244: myStr=%d", 244); break; case 245: sprintf(myStr, "case 245: myStr=%d", 245); break; case 246: sprintf(myStr, "case 246: myStr=%d", 246); break; case 247: sprintf(myStr, "case 247: myStr=%d", 247); break; case 248: sprintf(myStr, "case 248: myStr=%d", 248); break; case 249: sprintf(myStr, "case 249: myStr=%d", 249); break; case 250: sprintf(myStr, "case 250: myStr=%d", 250); break; case 251: sprintf(myStr, "case 251: myStr=%d", 251); break; case 252: sprintf(myStr, "case 252: myStr=%d", 252); break; case 253: sprintf(myStr, "case 253: myStr=%d", 253); break; case 254: sprintf(myStr, "case 254: myStr=%d", 254); break; case 255: sprintf(myStr, "case 255: myStr=%d", 255); break; case 256: sprintf(myStr, "case 256: myStr=%d", 256); break; case 257: sprintf(myStr, "case 257: myStr=%d", 257); break; case 258: sprintf(myStr, "case 258: myStr=%d", 258); break; case 259: sprintf(myStr, "case 259: myStr=%d", 259); break; case 260: sprintf(myStr, "case 260: myStr=%d", 260); break; case 261: sprintf(myStr, "case 261: myStr=%d", 261); break; case 262: sprintf(myStr, "case 262: myStr=%d", 262); break; case 263: sprintf(myStr, "case 263: myStr=%d", 263); break; case 264: sprintf(myStr, "case 264: myStr=%d", 264); break; case 265: sprintf(myStr, "case 265: myStr=%d", 265); break; case 266: sprintf(myStr, "case 266: myStr=%d", 266); break; case 267: sprintf(myStr, "case 267: myStr=%d", 267); break; case 268: sprintf(myStr, "case 268: myStr=%d", 268); break; case 269: sprintf(myStr, "case 269: myStr=%d", 269); break; case 270: sprintf(myStr, "case 270: myStr=%d", 270); break; case 271: sprintf(myStr, "case 271: myStr=%d", 271); break; case 272: sprintf(myStr, "case 272: myStr=%d", 272); break; case 273: sprintf(myStr, "case 273: myStr=%d", 273); break; case 274: sprintf(myStr, "case 274: myStr=%d", 274); break; case 275: sprintf(myStr, "case 275: myStr=%d", 275); break; case 276: sprintf(myStr, "case 276: myStr=%d", 276); break; case 277: sprintf(myStr, "case 277: myStr=%d", 277); break; case 278: sprintf(myStr, "case 278: myStr=%d", 278); break; case 279: sprintf(myStr, "case 279: myStr=%d", 279); break; case 280: sprintf(myStr, "case 280: myStr=%d", 280); break; case 281: sprintf(myStr, "case 281: myStr=%d", 281); break; case 282: sprintf(myStr, "case 282: myStr=%d", 282); break; case 283: sprintf(myStr, "case 283: myStr=%d", 283); break; case 284: sprintf(myStr, "case 284: myStr=%d", 284); break; case 285: sprintf(myStr, "case 285: myStr=%d", 285); break; case 286: sprintf(myStr, "case 286: myStr=%d", 286); break; case 287: sprintf(myStr, "case 287: myStr=%d", 287); break; case 288: sprintf(myStr, "case 288: myStr=%d", 288); break; case 289: sprintf(myStr, "case 289: myStr=%d", 289); break; case 290: sprintf(myStr, "case 290: myStr=%d", 290); break; case 291: sprintf(myStr, "case 291: myStr=%d", 291); break; case 292: sprintf(myStr, "case 292: myStr=%d", 292); break; case 293: sprintf(myStr, "case 293: myStr=%d", 293); break; case 294: sprintf(myStr, "case 294: myStr=%d", 294); break; case 295: sprintf(myStr, "case 295: myStr=%d", 295); break; case 296: sprintf(myStr, "case 296: myStr=%d", 296); break; case 297: sprintf(myStr, "case 297: myStr=%d", 297); break; case 298: sprintf(myStr, "case 298: myStr=%d", 298); break; case 299: sprintf(myStr, "case 299: myStr=%d", 299); break; } mdlDialog_dmsgsPrint ("after switch"); mdlDialog_dmsgsPrint (myStr);
I can't seem to make your code crash when I insert it into my switch code, so there's definitely more going on than I thought. Each of my cases is calling a function to update a multiline listbox and this seems to be related to the crash; however when I change your code to call the same function it doesn't crash, so it seems to be a combination of the structure of my switch statement (large numbers in random order) and the multiline text code.
My switch is on a dialog item ID, which varies greatly between 33000 and 39000 in no particular order. The multiline code is below. It seems to be fine until the code tries to exit the current function, which is when the stack has obviously blown.
Public void dialog_displayMLText(DialogBox *dbSP,int iItemId,char *cTextP){ DialogItem *diSP=NULL; BoolInt bValueChanged=FALSE; if ( cTextP && dbSP ) { if ( ( diSP = mdlDialog_itemGetByTypeAndId ( dbSP, RTYPE_MultilineText, iItemId, 0 ) ) != NULL ) { mdlDialog_itemSetValue ( &bValueChanged, 0, NULL, cTextP, dbSP, diSP->itemIndex ); mdlDialog_itemDraw ( dbSP, diSP->itemIndex ); mdlDialog_itemsSynch ( dbSP ); } } return;}
and a typical case statement is below:
case TABPAGEID_FTE_Cells_ElementTypes:{ dialog_displayMLText ( dbSP, MLTEXTID_FTE_FocusItemDescr, MSGTXT_HelpTab_CellElementTypes ); break;}
The string is fine, no funny formatting there and usually quite short. The code is usually called from a dialog item hook, but it also crashes if called anywhere else. It always crashes after the first entry into the switch, unless I break the switch up as mentioned originally. If you still can't find the problem, let me know and I will email you the code directly.
Do you have an exception.log file that can provide a call stack to look into what is happening?
Thanks,
Hi Mark, I'll see if I can create one. Usually it just blows the stack, so on function exit it jumps to a random line in my code while I'm tracing it through the MDL debugger. Since MDL captures the crash (illegal opcode) it doesn't crash MS. If I can get it to happen I'll send it, though it's probably of limited use.
Would you like email your code (test case is better) to me ?
My Bentley email address is : yongan.fu@bentley.com