[patch] files/libpng-1.0.15-gentoo.diff

libpng-1.0.15-gentoo.diff (text/plain), 2.36 KB, created by Thierry Carrez (RETIRED) on 2004-05-07 03:13:57 UTC

diff -urN libpng-1.0.15-old/pngconf.h libpng-1.0.15/pngconf.h
--- libpng-1.0.15-old/pngconf.h	2002-10-03 04:13:12.000000000 -0700
+++ libpng-1.0.15/pngconf.h	2003-01-16 08:57:40.000000000 -0800
@@ -254,8 +254,13 @@
 #      undef _BSD_SOURCE
 #    endif
 #    ifdef _SETJMP_H
-      __png.h__ already includes setjmp.h;
-      __dont__ include it again.;
+/* Explanation added by debian maintainer Philippe Troin <[e-mail]>.
+   There are two versions of setjmp, depending wether or not we compile for
+   BSD. They are incompatible and can cause crashes. The PNG people force
+   here a unique behavior for setjmp. It fou get the error below,
+   then include <png.h> before <setjmp.h>.
+*/
+#error png.h already includes setjmp.h with some additional fixup.
 #    endif
 #  endif /* __linux__ */
 
diff -urN libpng-1.0.15-old/pngrtran.c libpng-1.0.15/pngrtran.c
--- libpng-1.0.15-old/pngrtran.c	2002-10-03 04:13:15.000000000 -0700
+++ libpng-1.0.15/pngrtran.c	2003-01-16 08:57:40.000000000 -0800
@@ -1965,8 +1965,8 @@
          /* This changes the data from RRGGBB to RRGGBBXX */
          if (flags & PNG_FLAG_FILLER_AFTER)
          {
-            png_bytep sp = row + (png_size_t)row_width * 3;
-            png_bytep dp = sp  + (png_size_t)row_width;
+            png_bytep sp = row + (png_size_t)row_width * 6;
+            png_bytep dp = sp  + (png_size_t)row_width * 2;
             for (i = 1; i < row_width; i++)
             {
                *(--dp) = hi_filler;
@@ -1987,8 +1987,8 @@
          /* This changes the data from RRGGBB to XXRRGGBB */
          else
          {
-            png_bytep sp = row + (png_size_t)row_width * 3;
-            png_bytep dp = sp  + (png_size_t)row_width;
+            png_bytep sp = row + (png_size_t)row_width * 6;
+            png_bytep dp = sp  + (png_size_t)row_width * 2;
             for (i = 0; i < row_width; i++)
             {
                *(--dp) = *(--sp);
--- libpng-1.0.15-old/pngerror.c       2002-10-03 05:32:27.000000000 -0600
+++ libpng-1.0.15/pngerror.c     2004-04-29 09:26:18.000000000 -0600
@@ -135,10 +135,12 @@
       buffer[iout] = 0;
    else
    {
+      png_size_t len = strnlen(error_message, 63);
+
       buffer[iout++] = ':';
       buffer[iout++] = ' ';
-      png_memcpy(buffer+iout, error_message, 64);
-      buffer[iout+63] = 0;
+      png_memcpy(buffer+iout, error_message, len);
+      buffer[iout+len] = 0;
    }
 }