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Fix type warning on Windows.

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Add cast since read / write has unsigned return type on windows.
This commit is contained in:
Qi Wang 2018-04-06 11:40:44 -07:00 • committed by Qi Wang
parent 4df483f0fd
commit d3e0976a2c
5 changed files with 44 additions and 31 deletions
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15
src/malloc_io.c
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@ -70,20 +70,7 @@ static char *x2s(uintmax_t x, bool alt_form, bool uppercase, char *s,
/* malloc_message() setup. */
static void
wrtmessage(void *cbopaque, const char *s) {
#if defined(JEMALLOC_USE_SYSCALL) && defined(SYS_write)
/*
* Use syscall(2) rather than write(2) when possible in order to avoid
* the possibility of memory allocation within libc. This is necessary
* on FreeBSD; most operating systems do not have this problem though.
*
* syscall() returns long or int, depending on platform, so capture the
* unused result in the widest plausible type to avoid compiler
* warnings.
*/
UNUSED long result = syscall(SYS_write, STDERR_FILENO, s, strlen(s));
#else
UNUSED ssize_t result = write(STDERR_FILENO, s, strlen(s));
#endif
malloc_write_fd(STDERR_FILENO, s, strlen(s));
}
JEMALLOC_EXPORT void (*je_malloc_message)(void *, const char *s);