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Bug 3834 - Segfault on call to TTF_OpenFontIndexRW
Summary: Segfault on call to TTF_OpenFontIndexRW
Status: RESOLVED INVALID
Alias: None
Product: SDL_ttf
Classification: Unclassified
Component: misc (show other bugs)
Version: 2.0.14
Hardware: x86_64 Linux
: P2 normal
Assignee: Sam Lantinga
QA Contact: Sam Lantinga
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2017-09-19 13:42 UTC by Dave
Modified: 2019-10-23 09:13 UTC (History)
1 user (show)

See Also:

Attachments
zip file with font is in build folder. physfsrwops is included in this tar. to build: cd build; cmake ..; make (248.85 KB, application/gzip)
2017-09-19 13:42 UTC, Dave 		Details
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Description Dave 2017-09-19 13:42:35 UTC 
Created attachment 2952 [details]
zip file with font is in build folder. physfsrwops is included in this tar. to build: cd build; cmake ..; make

SDL version is 2.0.5-4
SDL_ttf is 2.0.14-1
and PhysFS/physfsrwops is 2.0.3
(on 64 bit linux with g++)

Attached please find short program reproducing the problem and data file. 

The code runs if I comment out the line TTF_Init();.

My debugger says the segfault is happening in TTF_OpenFontIndexRW at line 426 in a call to “main_arena” but I am not finding that function.
Comment 1 Sylvain 2017-09-20 06:33:30 UTC 
no familiar with physfs, but this code runs with latest version of SDL2: 

int main(int argc, char* argv[]) {
  SDL_Init(SDL_INIT_EVERYTHING);
  TTF_Init();
  SDL_RWops* rw = SDL_RWFromFile("menlo.ttf", "r");
  if (rw) {
      SDL_Log("ok rw");
  }
  TTF_Font* font = TTF_OpenFontIndexRW(rw, 1, 15, 0); 
  if (font) {
      SDL_Log("ok font");
  }
  return 0;
}

will print

INFO: ok rw
INFO: ok font
Comment 2 Dave 2017-09-20 15:55:37 UTC 
I think the problem is with PHYSFSRWOPS_makeRWops because this works fine:

#include <iostream>

#include <SDL2/SDL.h>
#include <SDL2/SDL_ttf.h>
#include <physfs.h>

int main(int argc, char* argv[]) {
  SDL_Init(SDL_INIT_EVERYTHING);
  TTF_Init();
  PHYSFS_init(argv[0]);
  PHYSFS_mount("menlo.zip", nullptr, 0);
  PHYSFS_exists("menlo.ttf");
  PHYSFS_File* fp = PHYSFS_openRead("menlo.ttf");
//  SDL_RWops* rw = PHYSFSRWOPS_makeRWops(fp);
  PHYSFS_sint64 file_size = PHYSFS_fileLength(fp);
  char *buf = new char[file_size];
  PHYSFS_read(fp, buf, 1, file_size);
  SDL_RWops* rw = SDL_RWFromMem(buf, file_size);

  TTF_Font* font = TTF_OpenFontIndexRW(rw, 1, 15, 0);
  return 0;
}
Comment 3 Sylvain 2019-10-23 09:13:16 UTC 
Marked resolved as Invalid!