File 1141-erts-Refactor-parse_export_table.patch of Package erlang

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File 1141-erts-Refactor-parse_export_table.patch of Package erlang (Revision a3c4263f873c2273804c376249a3c22f)

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From b7fd70a5d19432603470f360e0cdc56b88874736 Mon Sep 17 00:00:00 2001
From: Frej Drejhammar <frej.drejhammar@gmail.com>
Date: Thu, 17 Jun 2021 10:57:03 +0200
Subject: [PATCH 1/7] erts: Refactor parse_export_table()

Refactor parse_export_chunk() into two functions:

* parse_export_table() which can be used to parse any chunk
   containing a BeamFile_ExportTable.

* parse_export_table() which calls parse_export_table() and
   initializes beam->exports.
---
 erts/emulator/beam/beam_file.c | 25 ++++++++++++++-----------
 1 file changed, 14 insertions(+), 11 deletions(-)

diff --git a/erts/emulator/beam/beam_file.c b/erts/emulator/beam/beam_file.c
index 860e811f9d..e2b496ada2 100644
--- a/erts/emulator/beam/beam_file.c
+++ b/erts/emulator/beam/beam_file.c
@@ -323,24 +323,23 @@ static int parse_import_chunk(BeamFile *beam, IFF_Chunk *chunk) {
     return 1;
 }
 
-static int parse_export_chunk(BeamFile *beam, IFF_Chunk *chunk) {
-    BeamFile_ExportTable *exports;
+static int parse_export_table(BeamFile_ExportTable *dest,
+			      BeamFile *beam, IFF_Chunk *chunk) {
     BeamFile_AtomTable *atoms;
     BeamReader reader;
     Sint32 count;
     int i;
 
-    exports = &beam->exports;
-    ASSERT(exports->entries == NULL);
+    ASSERT(dest->entries == NULL);
 
     beamreader_init(chunk->data, chunk->size, &reader);
 
     LoadAssert(beamreader_read_i32(&reader, &count));
-    LoadAssert(CHECK_ITEM_COUNT(count, 0, sizeof(exports->entries[0])));
+    LoadAssert(CHECK_ITEM_COUNT(count, 0, sizeof(dest->entries[0])));
 
-    exports->entries = erts_alloc(ERTS_ALC_T_PREPARED_CODE,
-                                  count * sizeof(exports->entries[0]));
-    exports->count = count;
+    dest->entries = erts_alloc(ERTS_ALC_T_PREPARED_CODE,
+                                  count * sizeof(dest->entries[0]));
+    dest->count = count;
 
     atoms = &beam->atoms;
 
@@ -355,14 +354,18 @@ static int parse_export_chunk(BeamFile *beam, IFF_Chunk *chunk) {
         LoadAssert(arity >= 0 && arity <= MAX_ARG);
         LoadAssert(label >= 0);
 
-        exports->entries[i].function = atoms->entries[atom_index];
-        exports->entries[i].arity = arity;
-        exports->entries[i].label = label;
+        dest->entries[i].function = atoms->entries[atom_index];
+        dest->entries[i].arity = arity;
+        dest->entries[i].label = label;
     }
 
     return 1;
 }
 
+static int parse_export_chunk(BeamFile *beam, IFF_Chunk *chunk) {
+    return parse_export_table(&beam->exports, beam, chunk);
+}
+
 static int parse_lambda_chunk(BeamFile *beam, IFF_Chunk *chunk) {
     BeamFile_LambdaTable *lambdas;
     BeamFile_AtomTable *atoms;
-- 
2.26.2

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File 1141-erts-Refactor-parse_export_table.patch of Package erlang (Revision a3c4263f873c2273804c376249a3c22f)

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