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Add guard against gl_draw(const char*, int) called with null 2nd argument.

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git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@13117 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Manolo Gouy 2018-11-08 17:48:18 +00:00
parent ff20361f5a
commit b325a6b4b2
1 changed files with 4 additions and 2 deletions
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6
src/gl_draw.cxx
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@ -128,8 +128,10 @@ void gl_remove_displaylist_fonts()
\see gl_texture_pile_height(int)
*/
void gl_draw(const char* str, int n) {
if (has_texture_rectangle) Fl_Gl_Window_Driver::draw_string_with_texture(str, n);
else Fl_Gl_Window_Driver::global()->draw_string_legacy(str, n);
if (n > 0) {
if (has_texture_rectangle) Fl_Gl_Window_Driver::draw_string_with_texture(str, n);
else Fl_Gl_Window_Driver::global()->draw_string_legacy(str, n);
}
}