diff options
Diffstat (limited to 'src/3rdparty/freetype/src/base/ftsystem.c')
| -rw-r--r-- | src/3rdparty/freetype/src/base/ftsystem.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/3rdparty/freetype/src/base/ftsystem.c b/src/3rdparty/freetype/src/base/ftsystem.c index d8826b2367..61c99e3635 100644 --- a/src/3rdparty/freetype/src/base/ftsystem.c +++ b/src/3rdparty/freetype/src/base/ftsystem.c @@ -4,7 +4,7 @@ * * ANSI-specific FreeType low-level system interface (body). * - * Copyright (C) 1996-2022 by + * Copyright (C) 1996-2023 by * David Turner, Robert Wilhelm, and Werner Lemberg. * * This file is part of the FreeType project, and may only be used, @@ -206,7 +206,7 @@ * The number of bytes to read from the stream. * * @Return: - * The number of bytes actually read. If `count' is zero (this is, + * The number of bytes actually read. If `count' is zero (that is, * the function is used for seeking), a non-zero return value * indicates an error. */ @@ -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 ); } |