https://bugs.llvm.org/show_bug.cgi?id=51171
Bug ID: 51171
Summary: SIGSEGV at DeduceTemplateArgumentsByTypeMatch
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: Frontend
Assignee: unassignedclangb...@nondot.org
Reporter: ivan.muras...@gmail.com
CC: llvm-bugs@lists.llvm.org, neeil...@live.com,
richard-l...@metafoo.co.uk
Created attachment 25049
--> https://bugs.llvm.org/attachment.cgi?id=25049&action=edit
The crash reproducer
There is a SIGSEGV (NULL dereference) at DeduceTemplateArgumentsByTypeMatch as
soon as FunctionType parameter passed into the function is NULL. See reproducer
at the attachment
The possible fix for the problem is
--- a/clang/lib/Sema/SemaTemplateDeduction.cpp
+++ b/clang/lib/Sema/SemaTemplateDeduction.cpp
@@ -4346,7 +4346,7 @@ Sema::TemplateDeductionResult
Sema::DeduceTemplateArguments(
HasDeducedReturnType = true;
}
- if (!ArgFunctionType.isNull()) {
+ if (!ArgFunctionType.isNull() && !FunctionType.isNull()) {
unsigned TDF =
TDF_TopLevelParameterTypeList | TDF_AllowCompatibleFunctionType;
// Deduce template arguments from the function type.
--
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