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Try to capture cause of BTG load failures

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This commit is contained in:
James Turner 2020-11-04 11:52:58 +00:00 committed by James Turner
parent f3847bd10f
commit 2fb20f793b
1 changed files with 7 additions and 0 deletions
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7
simgear/io/sg_binobj.cxx
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@ -42,6 +42,7 @@
#include <simgear/bucket/newbucket.hxx>
#include <simgear/misc/sg_path.hxx>
#include <simgear/misc/strutils.hxx>
#include <simgear/math/SGGeometry.hxx>
#include <simgear/structure/exception.hxx>
@ -563,6 +564,12 @@ bool SGBinObject::read_bin( const SGPath& file ) {
// read headers
unsigned int header;
sgReadUInt( fp, &header );
if (sgReadError()) {
gzclose(fp);
throw sg_io_exception("Unable to read BTG header: " + simgear::strutils::error_string(errno), sg_location(file));
}
if ( ((header & 0xFF000000) >> 24) == 'S' &&
((header & 0x00FF0000) >> 16) == 'G' ) {