Avoid tools::parseLatex() crash on '\verb{}'. By Ivan Krylov <krylov.…

…r00t@gmail.com>. git-svn-id: https://svn.r-project.org/R/trunk@84726 00db46b3-68df-0310-9c12-caf00c1e9a41
r-devel · Jul 22, 2023 · 01d8689 · 01d8689
1 parent e543679
commit 01d8689
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/library/tools/src/gramLatex.y b/src/library/tools/src/gramLatex.y
@@ -846,8 +846,8 @@ static int mkVerb(int c)
  
  TEXT_PUSH('\\'); TEXT_PUSH('v'); TEXT_PUSH('e'); TEXT_PUSH('r'); TEXT_PUSH('b');
  TEXT_PUSH(c);
- while ((c = xxgetc()) != delim) TEXT_PUSH(c);
- TEXT_PUSH(c);
+ while (((c = xxgetc()) != delim) && c != R_EOF) TEXT_PUSH(c);
+ if (c != R_EOF) TEXT_PUSH(c);
  
  PRESERVE_SV(yylval = mkString2(stext, bp - stext));
  if(stext != st0) free(stext);