details: https://hg.nginx.org/njs/rev/fa59bcc82142
branches:
changeset: 1990:fa59bcc82142
user: Dmitry Volyntsev <xeioex@nginx.com>
date: Mon Nov 07 14:22:41 2022 -0800
description:
Fixed default module loader.

Previously, njs_mp_free() was called with invalid pointer because
njs_vm_compile_module() shifts start argument to the last reading
position.

This closes #601 issue on Github.

diffstat:

src/njs_module.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)

diffs (27 lines):

diff -r 94b370d9aa13 -r fa59bcc82142 src/njs_module.c
--- a/src/njs_module.c Mon Nov 07 14:22:41 2022 -0800
+++ b/src/njs_module.c Mon Nov 07 14:22:41 2022 -0800
@@ -361,10 +361,11 @@ static njs_mod_t *
njs_default_module_loader(njs_vm_t *vm, njs_external_ptr_t external,
njs_str_t *name)
{
+ u_char *start;
njs_int_t ret;
njs_str_t cwd, text;
+ njs_mod_t *module;
njs_parser_t *prev;
- njs_mod_t *module;
njs_module_info_t info;

prev = external;
@@ -388,7 +389,9 @@ njs_default_module_loader(njs_vm_t *vm,
return NULL;
}

- module = njs_vm_compile_module(vm, &info.file, &text.start,
+ start = text.start;
+
+ module = njs_vm_compile_module(vm, &info.file, &start,
&text.start[text.length]);

njs_mp_free(vm->mem_pool, text.start);
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