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Show crash reports on SIGSYS

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This will help make it easier to troubleshoot ABI breakages with on
operating systems that, unlike Linux don't have ironclad guarantees
to not break userspace.
This commit is contained in:
Justine Tunney 2022-06-23 13:01:01 -07:00
parent a4601a24d3
commit 44da16255a
11 changed files with 83 additions and 19 deletions
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3
libc/log/showcrashreports.c
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@ -39,7 +39,7 @@ STATIC_YOINK("__get_symbol_by_addr"); // for asan memory origin
extern const unsigned char __oncrash_thunks[8][11];
static struct sigaltstack g_oldsigaltstack;
static struct sigaction g_oldcrashacts[7];
static struct sigaction g_oldcrashacts[8];
static void InstallCrashHandlers(int extraflags) {
size_t i;
@ -104,6 +104,7 @@ void ShowCrashReports(void) {
kCrashSigs[4] = SIGTRAP; /* bad system call */
kCrashSigs[5] = SIGABRT; /* abort() called */
kCrashSigs[6] = SIGBUS; /* misaligned, noncanonical ptr, etc. */
kCrashSigs[7] = SIGSYS; /* bad system call */
/* </SYNC-LIST>: showcrashreports.c, oncrashthunks.S, oncrash.c */
if (!IsWindows()) {
bzero(&ss, sizeof(ss));