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| author | H.J. Lu <hjl.tools@gmail.com> | 2021-07-10 10:56:50 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2021-07-11 07:57:31 -0700 |
| commit | 17cef890c95a71671ec80b1daac88aef7ca46a90 (patch) | |
| tree | 87ccfabf7f414684b403df11ae57a10b8a9a6f82 | |
| parent | 28d07380c2ae5786e242be336ccc1c9e3111f3fa (diff) | |
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support: Replace _SC_MINSIGSTKSZ with _SC_SIGSTKSZ
Replace _SC_MINSIGSTKSZ with _SC_SIGSTKSZ since sysconf (_SC_MINSIGSTKSZ)
returns the minimum number of bytes of free stack space required in order
to guarantee successful, non-nested handling of a single signal whose
handler is an empty function while sysconf (_SC_SIGSTKSZ) returns the
suggested minimum number of bytes of stack space required for a signal
stack.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
| -rw-r--r-- | support/support_stack_alloc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/support/support_stack_alloc.c b/support/support_stack_alloc.c index b05ae08968..62eee84573 100644 --- a/support/support_stack_alloc.c +++ b/support/support_stack_alloc.c @@ -39,10 +39,10 @@ support_stack_alloc (size_t size) if (pagesize == -1) FAIL_EXIT1 ("sysconf (_SC_PAGESIZE): %m\n"); - /* Always supply at least sysconf (_SC_MINSIGSTKSZ) space; passing 0 + /* Always supply at least sysconf (_SC_SIGSTKSZ) space; passing 0 as size means only that much space. No matter what the number is, round it up to a whole number of pages. */ - size_t stacksize = roundup (size + sysconf (_SC_MINSIGSTKSZ), + size_t stacksize = roundup (size + sysconf (_SC_SIGSTKSZ), pagesize); /* The guard bands need to be large enough to intercept offset |