Fix module_are_literals_compressed to perform an unaligned read

pguyot · pguyot · commit 9c1c5376f44c · 2025-05-29T07:41:11.000+02:00
Signed-off-by: Paul Guyot &lt;pguyot@kallisys.net&gt;
diff --git a/src/libAtomVM/module.c b/src/libAtomVM/module.c
@@ -381,7 +381,7 @@ COLD_FUNC void module_destroy(Module *module)
 
 static bool module_are_literals_compressed(const uint8_t *litT)
 {
-    uint32_t required_buf_size = READ_32_ALIGNED(litT + LITT_UNCOMPRESSED_SIZE_OFFSET);
+    uint32_t required_buf_size = READ_32_UNALIGNED(litT + LITT_UNCOMPRESSED_SIZE_OFFSET);
     return (required_buf_size != 0);
 }
 

Original file line number	Diff line number	Diff line change
`@@ -381,7 +381,7 @@ COLD_FUNC void module_destroy(Module *module)`
`381`	`381`
`382`	`382`	`static bool module_are_literals_compressed(const uint8_t *litT)`
`383`	`383`	`{`
`384`		`- uint32_t required_buf_size = READ_32_ALIGNED(litT + LITT_UNCOMPRESSED_SIZE_OFFSET);`
	`384`	`+ uint32_t required_buf_size = READ_32_UNALIGNED(litT + LITT_UNCOMPRESSED_SIZE_OFFSET);`
`385`	`385`	`return (required_buf_size != 0);`
`386`	`386`	`}`
`387`	`387`