# HG changeset patch
# User jbe
# Date 1440260351 -7200
# Node ID 32b64f641761ad8106014e75da0dea94fbb4468a
# Parent  54b5b59e3c10d3640b46e86ea033aeee3298b919
Workaround for issue with noncompliant (_GNU_SOURCE) strerror_r() implementation

diff -r 54b5b59e3c10 -r 32b64f641761 libraries/extos/extos.c
--- a/libraries/extos/extos.c	Fri Aug 07 21:44:56 2015 +0200
+++ b/libraries/extos/extos.c	Sat Aug 22 18:19:11 2015 +0200
@@ -17,6 +17,8 @@
 #define EXTOS_MAX_ERRLEN 80
 #define EXTOS_EXEC_MAX_ARGS 64
 
+#define EXTOS_STRERROR_R_MSG "Error detail unavailable due to noncompliant strerror_r() implementation"
+
 static lua_Number extos_monotonic_start_time;
 
 static int extos_pfilter(lua_State *L) {
@@ -44,7 +46,7 @@
   int out_closed = 0;
   int err_closed = 0;
   void *newptr;
-  char errmsg[EXTOS_MAX_ERRLEN+1];
+  char errmsg[EXTOS_MAX_ERRLEN+1] = EXTOS_STRERROR_R_MSG;
   in_buf = luaL_optlstring(L, 1, "", &in_len);
   filename = luaL_checkstring(L, 2);
   args[0] = filename;
@@ -305,7 +307,7 @@
     const char *filename;
     filename = luaL_checkstring(L, 1);
     if (fd == EXTOS_STAT_FOLLOW ? stat(filename, &sb) : lstat(filename, &sb)) {
-      char errmsg[EXTOS_MAX_ERRLEN+1];
+      char errmsg[EXTOS_MAX_ERRLEN+1] = EXTOS_STRERROR_R_MSG;
       strerror_r(errno, errmsg, EXTOS_MAX_ERRLEN+1);
       if (errno == ENOENT) lua_pushboolean(L, 0);
       else lua_pushnil(L);
@@ -314,7 +316,7 @@
     }
   } else {
     if (fstat(fd, &sb)) {
-      char errmsg[EXTOS_MAX_ERRLEN+1];
+      char errmsg[EXTOS_MAX_ERRLEN+1] = EXTOS_STRERROR_R_MSG;
       strerror_r(errno, errmsg, EXTOS_MAX_ERRLEN+1);
       lua_pushnil(L);
       lua_pushfstring(L, "Could not get file stats for open file: %s", errmsg);