X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FVCBackend.cpp;h=957c69f585b48890ed38fdcfa1730da82f1dbf4c;hb=0b54650f0e7f1eae39f93444cac6c8525811975b;hp=b395a0d2b210563cabfb2ef518b6d7a168f1688d;hpb=0cb85e920666e8a47cb74ce96711fdcae8168862;p=lyx.git

diff --git a/src/VCBackend.cpp b/src/VCBackend.cpp
index b395a0d2b2..957c69f585 100644
--- a/src/VCBackend.cpp
+++ b/src/VCBackend.cpp
@@ -31,6 +31,7 @@
 #include "support/TempFile.h"
 
 #include <fstream>
+#include <iomanip>
 #include <sstream>
 
 using namespace std;
@@ -170,6 +171,8 @@ void RCS::scanMaster()
 	LYXERR(Debug::LYXVC, "LyXVC::RCS: scanMaster: " << master_);
 
 	ifstream ifs(master_.toFilesystemEncoding().c_str());
+	// limit the size of strings we read to avoid memory problems
+	ifs >> setw(65636);
 
 	string token;
 	bool read_enough = false;
@@ -389,7 +392,7 @@ void RCS::undoLast()
 
 bool RCS::undoLastEnabled()
 {
-	return true;
+	return owner_->hasReadonlyFlag();
 }
 
 
@@ -427,7 +430,8 @@ string RCS::revisionInfo(LyXVC::RevisionInfo const info)
 			return rev_date_cache_;
 		case LyXVC::Time:
 			return rev_time_cache_;
-		default: ;
+		default:
+			break;
 	}
 
 	return string();
@@ -566,10 +570,10 @@ void CVS::scanMaster()
 		if (contains(line, tmpf)) {
 			// Ok extract the fields.
 			smatch sm;
-
-			// false positive from coverity
-			// coverity[CHECKED_RETURN]
-			regex_match(line, sm, reg);
+			if (!regex_match(line, sm, reg)) {
+				LYXERR(Debug::LYXVC, "\t  Cannot parse line. Skipping.");
+				continue;
+			}
 
 			//sm[0]; // whole matched string
 			//sm[1]; // filename
@@ -1099,7 +1103,8 @@ string CVS::revisionInfo(LyXVC::RevisionInfo const info)
 			return rev_date_cache_;
 		case LyXVC::Time:
 			return rev_time_cache_;
-		default: ;
+		default:
+			break;
 		}
 	}
 	return string();
@@ -1663,8 +1668,8 @@ string SVN::revisionInfo(LyXVC::RevisionInfo const info)
 			return rev_date_cache_;
 		case LyXVC::Time:
 			return rev_time_cache_;
-		default: ;
-
+		default:
+			break;
 	}
 
 	return string();
@@ -2132,8 +2137,8 @@ string GIT::revisionInfo(LyXVC::RevisionInfo const info)
 			return rev_date_cache_;
 		case LyXVC::Time:
 			return rev_time_cache_;
-		default: ;
-
+		default:
+			break;
 	}
 
 	return string();