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Merge pull request #4525 from sternenseemann/lowdown-0.8.0

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libcmd/markdown: handle allocation errors in lowdown_term_rndr
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Eelco Dolstra 2021-02-07 21:24:16 +01:00 committed by GitHub
commit fd6eaa1766
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2 changed files with 7 additions and 7 deletions
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8
flake.nix
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@ -198,12 +198,12 @@
};
lowdown = with final; stdenv.mkDerivation {
name = "lowdown-0.7.9";
lowdown = with final; stdenv.mkDerivation rec {
name = "lowdown-0.8.0";
src = fetchurl {
url = https://kristaps.bsd.lv/lowdown/snapshots/lowdown-0.7.9.tar.gz;
hash = "sha512-7GQrKFICyTI5T4SinATfohiCq9TC0OgN8NmVfG3B3BZJM9J00DT8llAco8kNykLIKtl/AXuS4X8fETiCFEWEUQ==";
url = "https://kristaps.bsd.lv/lowdown/snapshots/${name}.tar.gz";
hash = "sha512-U9WeGoInT9vrawwa57t6u9dEdRge4/P+0wLxmQyOL9nhzOEUU2FRz2Be9H0dCjYE7p2v3vCXIYk40M+jjULATw==";
};
#src = lowdown-src;

6
src/libcmd/markdown.cc
View file

@ -3,9 +3,7 @@
#include "finally.hh"
#include <sys/queue.h>
extern "C" {
#include <lowdown.h>
}
namespace nix {
@ -42,7 +40,9 @@ std::string renderMarkdownToTerminal(std::string_view markdown)
throw Error("cannot allocate Markdown output buffer");
Finally freeBuffer([&]() { lowdown_buf_free(buf); });
lowdown_term_rndr(buf, nullptr, renderer, node);
int rndr_res = lowdown_term_rndr(buf, nullptr, renderer, node);
if (!rndr_res)
throw Error("allocation error while rendering Markdown");
return std::string(buf->data, buf->size);
}