diff options
| author | Marius Bakke <mbakke@fastmail.com> | 2018-08-27 19:48:55 +0200 |
|---|---|---|
| committer | Marius Bakke <mbakke@fastmail.com> | 2018-08-27 20:17:16 +0200 |
| commit | cbc8a92011d3a439b25201039941aac803870ec2 (patch) | |
| tree | cb83ad712afbe518ce71d9f44d4b3d45681d0f66 /gnu/packages/patches | |
| parent | b651a5ab35414da54887780d03ea786ad4c894f2 (diff) | |
| download | guix-cbc8a92011d3a439b25201039941aac803870ec2.tar.gz | |
gnu: cairo: Fix undefined behaviour.
This fixes <https://bugs.freedesktop.org/show_bug.cgi?id=104325> which showed up in Guix as an infinite loop during cairocffi tests. * gnu/packages/patches/cairo-setjmp-wrapper.patch: New file. * gnu/local.mk (dist_patch_DATA): Register it. * gnu/packages/gtk.scm (cairo)[source](patches): Add it.
Diffstat (limited to 'gnu/packages/patches')
| -rw-r--r-- | gnu/packages/patches/cairo-setjmp-wrapper.patch | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/gnu/packages/patches/cairo-setjmp-wrapper.patch b/gnu/packages/patches/cairo-setjmp-wrapper.patch new file mode 100644 index 0000000000..bffac6e041 --- /dev/null +++ b/gnu/packages/patches/cairo-setjmp-wrapper.patch @@ -0,0 +1,78 @@ +Revert faulty commit to avoid undefined behaviour: +https://bugs.freedesktop.org/show_bug.cgi?id=104325 + +Taken from this upstream commit: +https://cgit.freedesktop.org/cairo/commit/?h=1.14&id=2acc4382c54bd8239361ceed14423412a343d311 + +diff --git a/src/cairo-bentley-ottmann-rectangular.c b/src/cairo-bentley-ottmann-rectangular.c +index cb2e30c..5541bdc 100644 +--- a/src/cairo-bentley-ottmann-rectangular.c ++++ b/src/cairo-bentley-ottmann-rectangular.c +@@ -593,12 +593,6 @@ sweep_line_insert (sweep_line_t *sweep, rectangle_t *rectangle) + pqueue_push (sweep, rectangle); + } + +-static int +-sweep_line_setjmp (sweep_line_t *sweep_line) +-{ +- return setjmp (sweep_line->unwind); +-} +- + static cairo_status_t + _cairo_bentley_ottmann_tessellate_rectangular (rectangle_t **rectangles, + int num_rectangles, +@@ -615,7 +609,7 @@ _cairo_bentley_ottmann_tessellate_rectangular (rectangle_t **rectangles, + rectangles, num_rectangles, + fill_rule, + do_traps, container); +- if ((status = sweep_line_setjmp (&sweep_line))) ++ if ((status = setjmp (sweep_line.unwind))) + return status; + + rectangle = rectangle_pop_start (&sweep_line); +diff --git a/src/cairo-png.c b/src/cairo-png.c +index e64b14a..068617d 100644 +--- a/src/cairo-png.c ++++ b/src/cairo-png.c +@@ -158,14 +158,6 @@ png_simple_warning_callback (png_structp png, + */ + } + +-static int +-png_setjmp (png_struct *png) +-{ +-#ifdef PNG_SETJMP_SUPPORTED +- return setjmp (png_jmpbuf (png)); +-#endif +- return 0; +-} + + /* Starting with libpng-1.2.30, we must explicitly specify an output_flush_fn. + * Otherwise, we will segfault if we are writing to a stream. */ +@@ -237,8 +229,10 @@ write_png (cairo_surface_t *surface, + goto BAIL4; + } + +- if (png_setjmp (png)) ++#ifdef PNG_SETJMP_SUPPORTED ++ if (setjmp (png_jmpbuf (png))) + goto BAIL4; ++#endif + + png_set_write_fn (png, closure, write_func, png_simple_output_flush_fn); + +@@ -577,11 +571,12 @@ read_png (struct png_read_closure_t *png_closure) + png_set_read_fn (png, png_closure, stream_read_func); + + status = CAIRO_STATUS_SUCCESS; +- +- if (png_setjmp (png)) { ++#ifdef PNG_SETJMP_SUPPORTED ++ if (setjmp (png_jmpbuf (png))) { + surface = _cairo_surface_create_in_error (status); + goto BAIL; + } ++#endif + + png_read_info (png, info); + |