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Avoid assertion violation in 'xpalloc'

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* src/emacs.c (load_pdump): Ensure the 3rd argument of xpalloc is
always positive.  (Bug#58232)
This commit is contained in:
Eli Zaretskii 2022-10-02 12:58:04 +03:00
parent 6c46aa2116
commit 7ff5207624
1 changed files with 1 additions and 1 deletions
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src/emacs.c
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@ -903,7 +903,7 @@ load_pdump (int argc, char **argv)
exenamelen = prefix_length;
}
ptrdiff_t needed = exenamelen + strlen (suffix) + 1;
dump_file = xpalloc (NULL, &bufsize, needed - bufsize, -1, 1);
dump_file = xpalloc (NULL, &bufsize, max (1, needed - bufsize), -1, 1);
memcpy (dump_file, emacs_executable, exenamelen);
strcpy (dump_file + exenamelen, suffix);
result = pdumper_load (dump_file, emacs_executable);