shithub: rgbds

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Unconditionally output ROM0 even without any sections

Required for example when "overlaying" over a ROM and only patching ROMX.
Fixes #993

--- a/src/link/output.c

+++ b/src/link/output.c

@@ -39,7 +39,7 @@

 };

 static struct {

-	uint32_t nbBanks;

+	uint32_t nbBanks; // Size of the array below (which may be NULL if this is 0)

 	struct SortedSections {

 		struct SortedSection *sections;

 		struct SortedSection *zeroLenSections;

@@ -243,9 +243,9 @@

 		coverOverlayBanks(nbOverlayBanks);

 	if (outputFile) {

-		if (sections[SECTTYPE_ROM0].nbBanks > 0)

-			writeBank(sections[SECTTYPE_ROM0].banks[0].sections,

-				  startaddr[SECTTYPE_ROM0], maxsize[SECTTYPE_ROM0]);

+		writeBank(sections[SECTTYPE_ROM0].banks ? sections[SECTTYPE_ROM0].banks[0].sections

+							: NULL,

+			  startaddr[SECTTYPE_ROM0], maxsize[SECTTYPE_ROM0]);

 		for (uint32_t i = 0 ; i < sections[SECTTYPE_ROMX].nbBanks; i++)

 			writeBank(sections[SECTTYPE_ROMX].banks[i].sections,