https://bugs.llvm.org/show_bug.cgi?id=51448
Bug ID: 51448
Summary: [attributor] Segmentation fault when bitcast
Product: clang
Version: 12.0
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected],
[email protected]
When I try to compile this C file, I got the Segmentation fault:
// clang -mcpu=tsv110 -O3 -fuse-ld=lld -flto=full test-creduce.c -w
int a;
static unsigned long b();
void c() {
long d = b();
a = d;
}
unsigned long b(char *e, long f) { return f; }
int main() {}
Attributor optimization has been disabled, but we can still reproduce this
problem.
// opt -attributor -enable-new-pm=0 -attributor-manifest-internal -S %s
define i16 @foo3() {
%call = call i16 bitcast (i16 (i16*, i16) * @bar3 to i16 () *)()
ret i16 %call
}
define internal i16 @bar3(i16* %p1, i16 %p2) {
ret i16 %p2
}
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