https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78581
--- Comment #1 from Phil Ruffwind ---
After some more testing, it looks the following environment variable must be
set to trigger the crash:
C_INCLUDE_PATH=:
The variable must contain at least 25 characters, and the
Priority: P3
Component: preprocessor
Assignee: unassigned at gcc dot gnu.org
Reporter: rf at rufflewind dot com
Target Milestone: ---
Suppose there are two files within the same directory:
File "a":
#define g 0
#include "b"
#if g
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: rf at rufflewind dot com
Target Milestone: ---
The following code, which unpacks a 32-bit integer into a struct of four bytes,
does not optimize as well as it should. While "unpack"
