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Fix potential fluid crashes (STR 3420) + memory leak

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In total three issues backported from 1.4:

1 potential null pointer dereference (STR 3420)
1 potential null pointer ("&& child")
1 memory leak ("free(txt)")
This commit is contained in:
Albrecht Schlosser 2021-01-31 13:58:06 +01:00
parent f3bff256da
commit beb733e39e
1 changed files with 8 additions and 7 deletions
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15
fluid/Fl_Function_Type.cxx
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@ -1,19 +1,17 @@
//
// "$Id$"
//
// C function type code for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2016 by Bill Spitzak and others.
// Copyright 1998-2021 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// http://www.fltk.org/COPYING.php
// https://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
// Please see the following page on how to report bugs and issues:
//
// http://www.fltk.org/str.php
// https://www.fltk.org/bugs.php
//
#include <FL/Fl.H>
#include <FL/Fl_Window.H>
@ -275,6 +273,8 @@ void Fl_Function_Type::write_code1() {
if (rtype) {
if (!strcmp(rtype,"static")) {is_static = 1; rtype = 0;}
else if (!strncmp(rtype, "static ",7)) {is_static = 1; rtype += 7;}
}
if (rtype) {
if (!strcmp(rtype, "virtual")) {is_virtual = 1; rtype = 0;}
else if (!strncmp(rtype, "virtual ",8)) {is_virtual = 1; rtype += 8;}
}
@ -392,7 +392,7 @@ void Fl_Function_Type::write_code1() {
}
}
if (havewidgets && !child->name()) write_c(" %s* w;\n", subclassname(child));
if (havewidgets && child && !child->name()) write_c(" %s* w;\n", subclassname(child));
indentation += 2;
}
@ -1284,6 +1284,7 @@ void Fl_Comment_Type::write_code1() {
*e++ = eol;
b = e;
}
free(txt);
}
void Fl_Comment_Type::write_code2() {}