X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/72b2accb108e3d3ec8113ce2d183638c719a5d0d..c4f931f8570519323a49f320258e0ae9fb121acb:/methods/rred.cc?ds=sidebyside

diff --git a/methods/rred.cc b/methods/rred.cc
index bf9294d96..1e352d0e7 100644
--- a/methods/rred.cc
+++ b/methods/rred.cc
@@ -235,7 +235,9 @@ RredMethod::State RredMethod::patchMMap(FileFd &Patch, FileFd &From,		/*{{{*/
 	MMap ed_cmds(Patch, MMap::ReadOnly);
 	MMap in_file(From, MMap::ReadOnly);
 
-	if (ed_cmds.Size() == 0 || in_file.Size() == 0)
+	unsigned long long const ed_size = ed_cmds.Size();
+	unsigned long long const in_size = in_file.Size();
+	if (ed_size == 0 || in_size == 0)
 		return MMAP_FAILED;
 
 	EdCommand* commands = 0;
@@ -244,10 +246,10 @@ RredMethod::State RredMethod::patchMMap(FileFd &Patch, FileFd &From,		/*{{{*/
 
 	const char* begin = (char*) ed_cmds.Data();
 	const char* end = begin;
-	const char* ed_end = (char*) ed_cmds.Data() + ed_cmds.Size();
+	const char* ed_end = (char*) ed_cmds.Data() + ed_size;
 
 	const char* input = (char*) in_file.Data();
-	const char* input_end = (char*) in_file.Data() + in_file.Size();
+	const char* input_end = (char*) in_file.Data() + in_size;
 
 	size_t i;
 
@@ -331,7 +333,12 @@ RredMethod::State RredMethod::patchMMap(FileFd &Patch, FileFd &From,		/*{{{*/
 		}
 		if(command_count == command_alloc) {
 			command_alloc = (command_alloc + 64) * 3 / 2;
-			commands = (EdCommand*) realloc(commands, command_alloc * sizeof(EdCommand));
+			EdCommand* newCommands = (EdCommand*) realloc(commands, command_alloc * sizeof(EdCommand));
+			if (newCommands == NULL) {
+				free(commands);
+				return MMAP_FAILED;
+			}
+			commands = newCommands;
 		}
 		commands[command_count++] = cmd;
 	}