Prevent segfault in bootstrap-emacs on MinGW

* src/emacs.c (main) [WINDOWSNT]: Fix logic of determining by
argv[0] whether to use the static heap.  (Bug#34277)

1 files changed, 3 insertions, 1 deletions

diff --git a/src/emacs.c b/src/emacs.c
index ff814a149b3..869b5307f23 100644
--- a/src/emacs.c
+++ b/src/emacs.c
@@ -914,7 +914,9 @@ main (int argc, char **argv)
      happens.  This relies on the static heap being needed only in
      temacs and only if we are going to dump with unexec.  */
   bool use_dynamic_heap = false;
-  if (strstr (argv[0], "temacs") != NULL)
+  char *temacs_str = strstr (argv[0], "temacs");
+  if (temacs_str != NULL
+      && (temacs_str == argv[0] || IS_DIRECTORY_SEP (temacs_str[-1])))
     {
       eassert (temacs);
       /* Note that gflags are set at this point only if we have been