https://bugs.llvm.org/show_bug.cgi?id=50988
Bug ID: 50988
Summary: type mismatch assertion violation when generating code
for function declaration
Product: new-bugs
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Created attachment 25002
--> https://bugs.llvm.org/attachment.cgi?id=25002&action=edit
trace and additional information
The following code crashed Clang when adding debug information.
static int d, b, k;
static char c[];
static int e[];
static int *f = e;
static short h();
short h() {
int *n = &b;
char *o = &d;
*n = ((&c == o) > 40, 1); /* HERE */
return 0;
}
int main() { h(); }
Compile: clang-13 0e836490069ceb4a485d852034e50a9c_878_test2520436154.c -o
del.o
Version: the trace here is created from the trunk of today compiled with an
address sanitizer.
clang version 13.0.0 (https://github.com/llvm/llvm-project.git
5db826e4ce63a4d45a4695e5486841d08b86cd24)
Target: x86_64-unknown-linux-gnu
I am not sure that the bugs are actually related, because this trace doesn't
pass through the loop vectorization part, but I still tested with the fix for
bug #45943; the crash still happens, as well as with previous versions:
clang-13, clang-12 and clang-10.
It failed with an assertion violation:
llvm/include/llvm/IR/Instructions.h:1215: void llvm::ICmpInst::AssertOK():
Assertion `getOperand(0)->getType() == getOperand(1)->getType() && "Both
operands to ICmp instruction are not of the same type!"' failed.
Trace: see the attachment.
One interesting thing is that removing the line "static short h();" eliminates
the crash.
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