https://bugs.llvm.org/show_bug.cgi?id=48510
Bug ID: 48510
Summary: Safestack option crashes when used on 32-bit builds
Product: compiler-rt
Version: 11.0
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: compiler-rt
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
I am attempting to use the safe-stack feature `-fsanitize=safe-stack` with
clang-11. I tested a simple hello world program in 32-bit compilation an Ubuntu
64 machine, however the program when run crashes with the error message
```
safestack CHECK failed:
/build/llvm-toolchain-11-11.0.0~++20200929060912+dda0a1867cc/compiler-rt/lib/safestack/safestack.cpp:95
MAP_FAILED != addr
Aborted (core dumped)
```
I wanted to check if SafeStack is indeed supported in 32-bit compilations?
If so, any help debugging this would be very helpful.
For completeness, here is the compilation command
```
clang-11 -m32 -g -O0 -fsanitize=safe-stack ./helloworld.c -o ./helloworld &&
./helloworld
```
And here is the program being compiled.
```
#include <stdio.h>
int main(int argc, char const *argv[])
{
printf("Hello World\n");
return 0;
}
```
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