signals: don't trap segfault/abort when envvar NANO_NOCATCH is defined
When the user wants to get a backtrace, the crash handler shouldn't kick in.
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Коммит
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@ -309,6 +309,10 @@ not by default distinguish modified from unmodified arrow keys.
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Please report any other bugs that you encounter via:
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.br
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\fIhttps://savannah.gnu.org/bugs/?group=nano\fR.
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.sp
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When nano crashes, it will save any modified buffers to emergency .save files.
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If you are able to reproduce the crash and you want to get a backtrace, define
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the environment variable \fBNANO_NOCATCH\fR.
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.SH HOMEPAGE
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\fIhttps://nano-editor.org/\fR
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@ -1213,6 +1213,7 @@ void signal_init(void)
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}
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#ifndef DEBUG
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if (getenv("NANO_NOCATCH") == NULL) {
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/* Trap SIGSEGV and SIGABRT to save any changed buffers and reset
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* the terminal to a usable state. Reset these handlers to their
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* defaults as soon as their signal fires. */
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@ -1220,6 +1221,7 @@ void signal_init(void)
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act.sa_flags |= SA_RESETHAND;
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sigaction(SIGSEGV, &act, NULL);
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sigaction(SIGABRT, &act, NULL);
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}
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#endif
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}
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