| Issue |
128987
|
| Summary |
Buffer overflow with excess array initializers in #embed
|
| Labels |
c23,
clang:codegen
|
| Assignees |
|
| Reporter |
efriedma-quic
|
Testcase:
```
void f(int x) {
int p[8] = {x, x, x, x, x, x, x,
#embed __FILE__ limit(3)
};
}
```
This stores to `p[8]` and `p[9]`, which are past the end of the array.
Related assertion:
```
void f(int x) {
int p[8] = {x, x, x, x, x, x, x,
#embed __FILE__ limit(10)
};
}
```
```
llvm/include/llvm/Support/Casting.h:109: static bool llvm::isa_impl_cl<clang::ImplicitValueInitExpr, const clang::Expr *>::doit(const From *) [To = clang::ImplicitValueInitExpr, From = const clang::Expr *]: Assertion `Val && "isa<> used on a null pointer"' failed.
```
CC @Fznamznon
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