[PATCH] D60055: Check i < FD->getNumParams() before querying
Violet via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Sun Mar 31 21:33:17 PDT 2019
Violet updated this revision to Diff 193041.
Violet added a comment.
Wrong bug number
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D60055/new/
https://reviews.llvm.org/D60055
Files:
clang/lib/Sema/SemaTemplateInstantiate.cpp
clang/test/SemaCXX/PR41139.cpp
Index: clang/test/SemaCXX/PR41139.cpp
===================================================================
--- /dev/null
+++ clang/test/SemaCXX/PR41139.cpp
@@ -0,0 +1,14 @@
+// RUN: %clang_cc1 -fsyntax-only -std=c++17 -verify %s
+
+// expected-no-diagnostics
+
+int f1( unsigned ) { return 0; }
+
+template <class R, class... Args>
+struct S1 {
+ S1( R(*f)(Args...) ) {}
+};
+
+int main() {
+ S1 s1( f1 );
+}
Index: clang/lib/Sema/SemaTemplateInstantiate.cpp
===================================================================
--- clang/lib/Sema/SemaTemplateInstantiate.cpp
+++ clang/lib/Sema/SemaTemplateInstantiate.cpp
@@ -2892,7 +2892,7 @@
unsigned i = PV->getFunctionScopeIndex();
// This parameter might be from a freestanding function type within the
// function and isn't necessarily referring to one of FD's parameters.
- if (FD->getParamDecl(i) == PV)
+ if (i < FD->getNumParams() && FD->getParamDecl(i) == PV)
return FD->getCanonicalDecl()->getParamDecl(i);
}
}
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