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better error debug

This commit is contained in:
John Cupitt 2013-06-07 09:13:18 +01:00
parent 697555962a
commit 17151241f0
1 changed files with 23 additions and 2 deletions
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25
libvips/iofuncs/error.c
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@ -136,6 +136,15 @@ vips_error_buffer( void )
return( msg );
}
/* Some systems do not have va_copy() ... this might work (it does on MSVC),
* apparently.
*
* FIXME ... this should be in configure.in
*/
#ifndef va_copy
#define va_copy(d,s) ((d) = (s))
#endif
/**
* vips_verror:
* @domain: the source of the error
@ -149,14 +158,26 @@ vips_error_buffer( void )
void
vips_verror( const char *domain, const char *fmt, va_list ap )
{
#ifdef VIPS_DEBUG
{
char txt[256];
VipsBuf buf = VIPS_BUF_STATIC( txt );
va_list ap2;
vips_buf_appendf( &buf, "%s: ", domain );
va_copy( ap2, ap );
vips_buf_vappendf( &buf, fmt, ap2 );
vips_buf_appends( &buf, "\n" );
VIPS_DEBUG_MSG( "vips_verror: %s", vips_buf_all( &buf ) );
}
#endif /*VIPS_DEBUG*/
g_mutex_lock( vips__global_lock );
vips_buf_appendf( &vips_error_buf, "%s: ", domain );
vips_buf_vappendf( &vips_error_buf, fmt, ap );
vips_buf_appends( &vips_error_buf, "\n" );
g_mutex_unlock( vips__global_lock );
VIPS_DEBUG_MSG( "vips_verror: %s\n", fmt );
if( vips__fatal )
vips_error_exit( "vips__fatal" );
}