llvm-project/clang/test/CodeGen/fixup-depth-overflow.c

27 lines
662 B
C

// RUN: %clang_cc1 -O1 -disable-llvm-optzns -emit-llvm -o - %s | FileCheck %s
#define M if (x) goto L1;
#define M10 M M M M M M M M M M
#define M100 M10 M10 M10 M10 M10 M10 M10 M10 M10 M10
#define M1000 M100 M100 M100 M100 M100 M100 M100 M100 M100 M100
void f(int x) {
int h;
// Many gotos to not-yet-emitted labels would cause EHScope's FixupDepth
// to overflow (PR23490).
M1000 M1000 M1000
if (x == 5) {
// This will cause us to emit a clean-up of the stack variable. If the
// FixupDepths are broken, fixups will erroneously get threaded through it.
int i;
}
L1:
return;
}
// CHECK-LABEL: define void @f
// CHECK-NOT: cleanup