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Modify configure to determine return value of strerror_r.

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On glibc and Android's bionic, strerror_r returns char* when
_GNU_SOURCE is defined.

Add a configure check for this rather than assume glibc is the
only libc that behaves this way.
This commit is contained in:
Christopher Ferris 2017-09-22 12:24:50 -07:00 • committed by David Goldblatt
parent ba5992fe9a
commit f78d4ca3fb
3 changed files with 25 additions and 1 deletions
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2
src/malloc_io.c
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@ -111,7 +111,7 @@ buferror(int err, char *buf, size_t buflen) {
FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err, 0,
(LPSTR)buf, (DWORD)buflen, NULL);
return 0;
#elif defined(__GLIBC__) && defined(_GNU_SOURCE)
#elif defined(JEMALLOC_STRERROR_R_RETURNS_CHAR_WITH_GNU_SOURCE) && defined(_GNU_SOURCE)
char *b = strerror_r(err, buf, buflen);
if (b != buf) {
strncpy(buf, b, buflen);