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Do not perform any sanity checks for bad section types

Otherwise, the arrays get overflowed

--- a/src/link/section.c

+++ b/src/link/section.c

@@ -220,8 +220,11 @@

 	/* Sanity check the section's type */

-	if (section->type < 0 || section->type >= SECTTYPE_INVALID)

+	if (section->type < 0 || section->type >= SECTTYPE_INVALID) {

 		fail("Section \"%s\" has an invalid type.", section->name);

+		return;

+	}

+

 	if (is32kMode && section->type == SECTTYPE_ROMX) {

 		if (section->isBankFixed && section->bank != 1)

 			fail("%s: ROMX sections must be in bank 1 (if any) with option -t",