[gnuwin32 - Help] Libarchive segfault on archive_write_header

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https://sourceforge.net/forum/message.php?msg_id=5026519
By: jholl

I'm getting a segfault using libarchive when trying running an example from
archive_write_new manpage.I step through the app and get the following stack
when after the call to archive_write_header. I thought maybe the it was having
issues with the file not existing but i opened the file before the
archive_write_heaer call and it was there where not issues with that.

Stack

Thread [1] (Suspended: Signal 'SIGSEGV' received. Description: Segmentation
fault.)
	3 wcsxfrm()  0x77c483b7	
	2 stricmp()  0x77c4627d	
	1 libarchive2!archive_write_open()  0x62594d4b	
Code

int main () {
	
	struct myArchData *mydata = malloc(sizeof(struct myArchData));
	struct archive *a;
	struct archive_entry *entry;
	struct stat st;
	
	char buff[8192];
	int len;
	int fd;
	
	a = archive_write_new();
	mydata->name = "C:\\test.tar";
	  archive_write_set_compression_gzip(a);
	  archive_write_set_format_ustar(a);
	  archive_write_open(a, mydata, myopen, mywrite, myclose);
	  
	  char **filename = (char**)malloc(1* sizeof(*filename));
	  filename[0] = "C:\\powerdvd.log";
	  int fileHanlde = open(*filename, O_RDONLY);
	  close(fileHanlde);
	  while (*filename) {
	    stat(*filename, &st);
	    entry = archive_entry_new();
	    archive_entry_copy_stat(entry, &st);
	    archive_entry_set_pathname(entry, *filename);
	    archive_write_header(a, entry);
	    fd = open(*filename, O_RDONLY);
	    len = read(fd, buff, sizeof(buff));
	    while ( len > 0 ) {
		archive_write_data(a, buff, len);
		len = read(fd, buff, sizeof(buff));
	    }
	    archive_entry_free(entry);
	    filename = filename + 1;
	  }
	  archive_write_finish(a);

	return 0;
	
	
	
}

compile and link commands
g++ -O0 -g3 -Wall -c -fmessage-length=0 -otransfer\fileDownload.o
..\transfer\fileDownload.cpp
g++ -LC:\Program Files\GnuWin32\lib -LC:\lang_env\c\lib -oAutoloader.exe
transfer\fileDownload.o main.o -llibarchive

if anyone has suggestions let me know


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