mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-07 03:38:31 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Improve crash handler on XNU

Browse source 
This avoids an issue where a crash signal could cause the MacOS process
to freeze and consume all CPU rather than dying as it rightfully should
This commit is contained in:
Justine Tunney 2024-05-26 18:41:15 -07:00
parent 0a51241f7a
commit 086d7006da
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
5 changed files with 53 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

18
libc/integral/c.inc
View file

@ -66,9 +66,10 @@
#endif
#if (!defined(__llvm__) && !__has_builtin(__builtin_assume))
#define __builtin_assume(x) \
do { \
if (!(x)) __builtin_unreachable(); \
#define __builtin_assume(x) \
do { \
if (!(x)) \
__builtin_unreachable(); \
} while (0)
#endif
@ -598,10 +599,21 @@ typedef struct {
#ifdef __x86_64__
#define DebugBreak() __asm__("int3")
#elif defined(__aarch64__)
#define DebugBreak() __asm__("brk\t#0x666")
#else
#define DebugBreak() __builtin_trap()
#endif
#ifdef __aarch64__
/* raise sigill (not sigtrap) like x86 does */
#define __builtin_trap() \
do { \
__asm__("udf\t#0x666"); \
__builtin_unreachable(); \
} while (0)
#endif
#endif /* _COSMO_SOURCE */
#define __veil(CONSTRAINT, EXPRESSION) \