diff options
-rw-r--r-- | src/base/ftsystem.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/base/ftsystem.c b/src/base/ftsystem.c index fcd289d19..98c046b83 100644 --- a/src/base/ftsystem.c +++ b/src/base/ftsystem.c @@ -219,7 +219,7 @@ FT_FILE* file; - if ( !count && offset > stream->size ) + if ( offset > stream->size && !count ) return 1; file = STREAM_FILE( stream ); @@ -227,6 +227,11 @@ if ( stream->pos != offset ) ft_fseek( file, (long)offset, SEEK_SET ); + /* Avoid calling `fread` with `buffer=NULL` and `count=0`, */ + /* which is undefined behaviour. */ + if ( !count ) + return 0; + return (unsigned long)ft_fread( buffer, 1, count, file ); } |