From: "Barak A. Pearlmutter" <barak+git@pearlmutter.net> Date: Mon, 10 May 2021 15:49:55 +0100 Subject: djvulibre-fedora Patch11 djvulibre-3.5.27-djvuport-stack-overflow.patch --- libdjvu/DjVuPort.cpp | 9 +++++++++ libdjvu/DjVuPort.h | 1 + 2 files changed, 10 insertions(+) diff --git a/libdjvu/DjVuPort.cpp b/libdjvu/DjVuPort.cpp index 2b3e0d2..a377920 100644 --- a/libdjvu/DjVuPort.cpp +++ b/libdjvu/DjVuPort.cpp @@ -507,10 +507,19 @@ GP<DjVuFile> DjVuPortcaster::id_to_file(const DjVuPort * source, const GUTF8String &id) { GPList<DjVuPort> list; + + if (!!opening_id && opening_id == id) + G_THROW("DjVuPortcaster: recursive opening of the same file (corrupted file?)"); + else + opening_id = id; + compute_closure(source, list, true); GP<DjVuFile> file; for(GPosition pos=list;pos;++pos) if ((file=list[pos]->id_to_file(source, id))) break; + + opening_id = GUTF8String(); + return file; } diff --git a/libdjvu/DjVuPort.h b/libdjvu/DjVuPort.h index e2b3125..313dc2b 100644 --- a/libdjvu/DjVuPort.h +++ b/libdjvu/DjVuPort.h @@ -484,6 +484,7 @@ private: const DjVuPort *dst, int distance); void compute_closure(const DjVuPort *src, GPList<DjVuPort> &list, bool sorted=false); + GUTF8String opening_id; };