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-rw-r--r--clang/lib/StaticAnalyzer/Core/CoreEngine.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/clang/lib/StaticAnalyzer/Core/CoreEngine.cpp b/clang/lib/StaticAnalyzer/Core/CoreEngine.cpp
index c75fb2e763d..da608f6c755 100644
--- a/clang/lib/StaticAnalyzer/Core/CoreEngine.cpp
+++ b/clang/lib/StaticAnalyzer/Core/CoreEngine.cpp
@@ -208,6 +208,11 @@ bool CoreEngine::ExecuteWorkList(const LocationContext *L, unsigned Steps,
// Check if we have a steps limit
bool UnlimitedSteps = Steps == 0;
+ // Cap our pre-reservation in the event that the user specifies
+ // a very large number of maximum steps.
+ const unsigned PreReservationCap = 4000000;
+ if(!UnlimitedSteps)
+ G.reserve(std::min(Steps,PreReservationCap));
while (WList->hasWork()) {
if (!UnlimitedSteps) {
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