Using SDI_stdarg.h for OS4 and OS3 with VBCC

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Wed, 2025-06-25 15:37
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jabirulo
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Using SDI_stdarg.h for OS4 and OS3 with VBCC

HI I (re)use this piece of code for OS4 and OS3 and with VBCC, OS3 build works fine, but OS4 build I get always a crash :-(
What am I doing wrong? Do I need to use/add "VA_ARG(ap, )" to VSNPrintf(), or change it to SNPrintf() ¿:-/

Alresdy read "https://os4coding.net/forum/vsprintf" but still don't get it.

  1. void VARARGS68K log_printf(struct ArchiverData *ad, int type, const char *fmt, ...) {
  2. 	static char         log_buf[16], buffer[2048];
  3. 	struct DateStamp    ds;
  4. 	int                 hour, minute, second, offset;
  5. 	VA_LIST             ap;
  6. 	struct ArchiverGUI *ag = &ad->ad_GUIData;
  7.  
  8. 	assert(type >= LOG_INFO && type <= LOG_ERROR);
  9.  
  10. 	DateStamp(&ds);
  11.  
  12. 	ObtainSemaphore(&ad->ad_LogSem);
  13.  
  14. 	hour   = ds.ds_Minute / 60;
  15. 	minute = ds.ds_Minute % 60;
  16. 	second = ds.ds_Tick / TICKS_PER_SECOND;
  17.  
  18. 	offset = SNPrintf(log_buf, sizeof(log_buf), "%lc: [%02ld:%02ld:%02ld] ",
  19. 	                                          log_type[type], hour, minute, second);
  20. 	Write(ad->ad_LogFile, log_buf, strlen(log_buf));
  21.  
  22. 	VA_START(ap, fmt);
  23. 	VSNPrintf(buffer, sizeof(buffer), fmt, ap);
  24. 	//VSNPrintf(buffer + offset, sizeof(buffer) - offset, fmt,ap);
  25. 	VA_END(ap);
  26.  
  27. #ifdef _USE_MUI_
  28. 	if(ag->ag_Status) {
  29. 		SetAttrs(ag->ag_Status, MUIA_Text_Contents,buffer, TAG_END);
  30. 	}
  31. #endif
  32.  
  33. 	Strlcat(buffer, "\n", sizeof(buffer));
  34. 	Write(ad->ad_LogFile, buffer, strlen(buffer));
  35.  
  36. 	ReleaseSemaphore(&ad->ad_LogSem);
  37. }

TiA

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