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rustdoc: Prevent a segfault when using markdown

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The field passed from markdown could sometimes be null, and it wasn't properly
handled.
This commit is contained in:
Alex Crichton 2014-05-23 19:32:18 -07:00
parent 316ef79dc2
commit a96067077a
1 changed files with 2 additions and 0 deletions
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src/librustdoc/html/markdown.rs
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@ -144,6 +144,8 @@ pub fn render(w: &mut fmt::Formatter, s: &str, print_toc: bool) -> fmt::Result {
extern fn block(ob: *mut hoedown_buffer, text: *hoedown_buffer, extern fn block(ob: *mut hoedown_buffer, text: *hoedown_buffer,
lang: *hoedown_buffer, opaque: *mut libc::c_void) { lang: *hoedown_buffer, opaque: *mut libc::c_void) {
unsafe { unsafe {
if text.is_null() { return }
let opaque = opaque as *mut hoedown_html_renderer_state; let opaque = opaque as *mut hoedown_html_renderer_state;
let my_opaque: &MyOpaque = &*((*opaque).opaque as *MyOpaque); let my_opaque: &MyOpaque = &*((*opaque).opaque as *MyOpaque);
slice::raw::buf_as_slice((*text).data, (*text).size as uint, |text| { slice::raw::buf_as_slice((*text).data, (*text).size as uint, |text| {