compat: fall back on __va_copy if available

diff --git a/wrapper.c b/wrapper.c
index 79635f2e1628a1ac25d62ca502c9ee4d0a2b61d6..4c147d6c48c000bab636fad3edc2fe7da6670948 100644 (file)
--- a/wrapper.c
+++ b/wrapper.c
@@ -198,10 +198,22 @@ FILE *xfdopen(int fd, const char *mode)
 int xmkstemp(char *template)
 {
        int fd;
+       char origtemplate[PATH_MAX];
+       strlcpy(origtemplate, template, sizeof(origtemplate));
 
        fd = mkstemp(template);
-       if (fd < 0)
-               die_errno("Unable to create temporary file");
+       if (fd < 0) {
+               int saved_errno = errno;
+               const char *nonrelative_template;
+
+               if (!template[0])
+                       template = origtemplate;
+
+               nonrelative_template = make_nonrelative_path(template);
+               errno = saved_errno;
+               die_errno("Unable to create temporary file '%s'",
+                       nonrelative_template);
+       }
        return fd;
 }
 
@@ -321,10 +333,22 @@ int gitmkstemps(char *pattern, int suffix_len)
 int xmkstemp_mode(char *template, int mode)
 {
        int fd;
+       char origtemplate[PATH_MAX];
+       strlcpy(origtemplate, template, sizeof(origtemplate));
 
        fd = git_mkstemp_mode(template, mode);
-       if (fd < 0)
-               die_errno("Unable to create temporary file");
+       if (fd < 0) {
+               int saved_errno = errno;
+               const char *nonrelative_template;
+
+               if (!template[0])
+                       template = origtemplate;
+
+               nonrelative_template = make_nonrelative_path(template);
+               errno = saved_errno;
+               die_errno("Unable to create temporary file '%s'",
+                       nonrelative_template);
+       }
        return fd;
 }