https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118770
Bug ID: 118770
Summary: Random Segmentation fault in preprocessor from _Pragma
push pop within _Pragma
Product: gcc
Version: 14.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: preprocessor
Assignee: unassigned at gcc dot gnu.org
Reporter: ymity.me at gmail dot com
Target Milestone: ---
Created attachment 60394
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60394&action=edit
Crash log, gcc -v, file which caused crash from 2 diffrent devices.
"Random" Segmentation fault caused by calling _Pragma push_macro & _Pragma
pop_macro within _Pragma. Tested on two different devices and was able to
recreate it iff: 3 more push pop occurred within _Pragma - I did worry it was a
hardware problem.
Only occurred when calling gcc with -E flag
// Some function like macro
#define X() X
// Needs to call _Pragma from within _Pragma
// Needs to be done in another function.
#define POP()\
_Pragma( \
_Pragma("push_macro(\"X\")") \
_Pragma("pop_macro(\"X\")") \
"pop_macro(\"CRASH\")" \
)
// Have a infinite loop - Normal usecase Recursion.
#define CRASH()\
_Pragma("push_macro(\"CRASH\")") \
POP() \
CRASH()
CRASH()
