https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215125
Bug ID: 215125
Summary: clang: Turning on sanitizer options causes the test
for non-existent function mallinfo() to pass
Product: Base System
Version: 11.0-STABLE
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: bin
Assignee: [email protected]
Reporter: [email protected]
Created attachment 177764
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=177764&action=edit
C test program: conftest.c
It fails without the sanitizer options:
> cc -o conftest -O2 -pipe -fno-omit-frame-pointer -fstack-protector
> -fno-strict-aliasing -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -Qunused-arguments
> -fstack-protector-all -Wstack-protector -fwrapv --param ssp-buffer-size=1
> -fPIE -fasynchronous-unwind-tables -fno-omit-frame-pointer
> -I${top_srcdir}/src/common -Wl,-rpath,/usr/local/lib -fstack-protector -pie
> -Wl,-z,relro -Wl,-z,now -rdynamic conftest.c -lpthread -lexecinfo
It succeeds with the sanitizer options:
> cc -o conftest -O2 -pipe -fno-omit-frame-pointer -fstack-protector
> -fno-strict-aliasing -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -Qunused-arguments
> -fstack-protector-all -Wstack-protector -fwrapv --param ssp-buffer-size=1
> -fPIE -fsanitize=address -fsanitize=undefined -fno-omit-frame-pointer
> -fasynchronous-unwind-tables -fno-omit-frame-pointer
> -I${top_srcdir}/src/common -Wl,-rpath,/usr/local/lib -fstack-protector -pie
> -Wl,-z,relro -Wl,-z,now -rdynamic conftest.c -lpthread -lexecinfo
I found this during security/tor build on FreeBSD 11 amd64.
Sanitizer options shouldn't make such difference, and the test should always
fail because there is no such function.
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