Use std::vector for section symbols

include/link/section.hpp

@@ -48,8 +48,7 @@ struct Section {
 	std::vector<struct Patch> *patches;
 	// Extra info computed during linking
 	std::vector<struct Symbol *> *fileSymbols;
-	uint32_t nbSymbols;
-	struct Symbol **symbols;
+	std::vector<struct Symbol *> *symbols;
 	struct Section *nextu; // The next "component" of this unionized sect
 };
 

src/link/object.cpp

@@ -1,5 +1,6 @@
 /* SPDX-License-Identifier: MIT */
 
+#include <algorithm>
 #include <deque>
 #include <errno.h>
 #include <inttypes.h>
@@ -386,26 +387,18 @@ static void readSection(FILE *file, struct Section *section, char const *fileNam
  */
 static void linkSymToSect(struct Symbol *symbol, struct Section *section)
 {
-	uint32_t a = 0, b = section->nbSymbols;
+	uint32_t a = 0, b = section->symbols->size();
 
 	while (a != b) {
 		uint32_t c = (a + b) / 2;
 
-		if (section->symbols[c]->offset > symbol->offset)
+		if ((*section->symbols)[c]->offset > symbol->offset)
 			b = c;
 		else
 			a = c + 1;
 	}
 
-	struct Symbol *tmp = symbol;
-
-	for (uint32_t i = a; i <= section->nbSymbols; i++) {
-		symbol = tmp;
-		tmp = section->symbols[i];
-		section->symbols[i] = symbol;
-	}
-
-	section->nbSymbols++;
+	section->symbols->insert(section->symbols->begin() + a, symbol);
 }
 
 /*
@@ -544,15 +537,10 @@ void obj_ReadFile(char const *fileName, unsigned int fileID)
 		fileSections[i]->nextu = NULL;
 		readSection(file, fileSections[i], fileName, nodes[fileID]);
 		fileSections[i]->fileSymbols = &fileSymbols;
-		if (nbSymPerSect[i]) {
-			fileSections[i]->symbols =
-				(struct Symbol **)malloc(nbSymPerSect[i] * sizeof(*fileSections[i]->symbols));
+		fileSections[i]->symbols = new(std::nothrow) std::vector<struct Symbol *>();
 		if (!fileSections[i]->symbols)
 			err("%s: Failed to link to symbols", fileName);
-		} else {
-			fileSections[i]->symbols = NULL;
-		}
-		fileSections[i]->nbSymbols = 0;
+		fileSections[i]->symbols->reserve(nbSymPerSect[i]);
 
 		sect_AddSection(fileSections[i]);
 	}
@@ -635,7 +623,7 @@ static void freeSection(struct Section *section)
 			free(section->data);
 			delete section->patches;
 		}
-		free(section->symbols);
+		delete section->symbols;
 		free(section);
 
 		section = next;

src/link/output.cpp

@@ -335,7 +335,7 @@ static void writeSymBank(struct SortedSections const &bankSections,
 	uint32_t nbSymbols = 0;
 
 	forEachSortedSection(sect, {
-		nbSymbols += sect->nbSymbols;
+		nbSymbols += sect->symbols->size();
 	});
 
 	if (!nbSymbols)
@@ -346,9 +346,7 @@ static void writeSymBank(struct SortedSections const &bankSections,
 	symList.reserve(nbSymbols);
 
 	forEachSortedSection(sect, {
-		for (uint32_t i = 0; i < sect->nbSymbols; i++) {
-			struct Symbol const *sym = sect->symbols[i];
-
+		for (struct Symbol const *sym : *sect->symbols) {
 			// Don't output symbols that begin with an illegal character
 			if (canStartSymName(sym->name[0]))
 				symList.push_back({ .sym = sym, .addr = (uint16_t)(sym->offset + sect->org) });
@@ -420,11 +418,10 @@ static void writeMapBank(struct SortedSections const &sectList, enum SectionType
 			uint16_t org = sect->org;
 
 			while (sect) {
-				for (size_t i = 0; i < sect->nbSymbols; i++)
+				for (struct Symbol *sym : *sect->symbols)
 					// Space matches "\tSECTION: $xxxx ..."
 					fprintf(mapFile, "\t         $%04" PRIx32 " = %s\n",
-						sect->symbols[i]->offset + org,
-						sect->symbols[i]->name);
+						sym->offset + org, sym->name);
 
 				if (sect->nextu) {
 					// Announce the following "piece"

src/link/sdas_obj.cpp

@@ -355,8 +355,10 @@ void sdobj_ReadFile(struct FileStackNode const *where, FILE *file, std::vector<s
 				fatal(where, lineNo, "Failed to alloc new area's patches: %s",
 				      strerror(errno));
 			curSection->fileSymbols = &fileSymbols; // IDs are instead per-section
-			curSection->nbSymbols = 0;
-			curSection->symbols = NULL; // Will be allocated on demand as well
+			curSection->symbols = new(std::nothrow) std::vector<struct Symbol *>();
+			if (!curSection->symbols)
+				fatal(where, lineNo, "Failed to alloc new area's symbol list: %s",
+				      strerror(errno));
 			curSection->nextu = NULL;
 
 			++nbSections;
@@ -427,17 +429,8 @@ void sdobj_ReadFile(struct FileStackNode const *where, FILE *file, std::vector<s
 			if (strncasecmp(&token[1], "ef", 2) != 0)
 				fatal(where, lineNo, "'S' line is neither \"Def\" nor \"Ref\"");
 
-			if (nbSections != 0) {
-				struct Section *section = fileSections[nbSections - 1].section;
-
-				++section->nbSymbols;
-				section->symbols = (struct Symbol **)realloc(section->symbols,
-					sizeof(section->symbols[0]) * section->nbSymbols);
-				if (!section->symbols)
-					fatal(where, lineNo, "Failed to realloc \"%s\"'s symbol list: %s",
-					      section->name, strerror(errno));
-				section->symbols[section->nbSymbols - 1] = symbol;
-			}
+			if (nbSections != 0)
+				fileSections[nbSections - 1].section->symbols->push_back(symbol);
 
 			expectEol("'S' line is too long");
 
@@ -757,8 +750,8 @@ void sdobj_ReadFile(struct FileStackNode const *where, FILE *file, std::vector<s
 
 		if (section->modifier == SECTION_FRAGMENT) {
 			// Add the fragment's offset to all of its symbols
-			for (uint32_t j = 0; j < section->nbSymbols; ++j)
-				section->symbols[j]->offset += section->offset;
+			for (struct Symbol *symbol : *section->symbols)
+				symbol->offset += section->offset;
 		}
 	}