temporary

.gitignore

@@ -1,6 +1,6 @@
 *.o
 *~
 /mold
-/test/Output
+/test/tmp
 options.inc
 core

Makefile

@@ -26,7 +26,7 @@ intel_tbb:
 	$(MAKE) -C oneTBB
 
 test: mold
-	./llvm-project/build/bin/llvm-lit test
+	(cd test; for i in *.sh; do ./$$i; done)
 
 clean:
 	rm -f *.o *~ mold

elf.cc

@@ -9,7 +9,8 @@ ElfFile::ElfFile(MemoryMappedFile mb) : mb(mb), ehdr((ElfEhdr &)*mb.data) {
   u8 *begin = mb.data + ehdr.e_shoff;
   u8 *end = begin + ehdr.e_shnum * sizeof(ElfShdr);
   if (mb.data + mb.size < end)
-    error(mb.name + ": e_shoff or e_shnum corrupted");
+    error(mb.name + ": e_shoff or e_shnum corrupted: " +
+          std::to_string(mb.size) + " " + std::to_string(ehdr.e_shnum));
   sections = {(ElfShdr *)begin, (ElfShdr *)end};
 }
 

object_file.cc

@@ -573,7 +573,7 @@ bool is_c_identifier(std::string_view name) {
 ObjectFile *ObjectFile::create_internal_file() {
   // Create a dummy object file.
   constexpr int bufsz = 256;
-  u8 *buf = new u8[bufsz];
+  u8 *buf = (u8 *)calloc(1, bufsz);
   memcpy(buf, "\177ELF", 4);
   MemoryMappedFile *mb = new MemoryMappedFile("<internal>", buf, bufsz);
   auto *obj = new ObjectFile(*mb, "");

test/as-needed.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+set -e
+echo -n "Testing $(basename -s .sh $0) ..."
+t=$(pwd)/tmp/$(basename -s .sh $0)
+mkdir -p $t
+
+cat <<EOF | cc -o $t/a.o -c -x assembler -
+        .text
+        .globl _start
+_start:
+        call fn1@PLT
+EOF
+
+cat <<EOF | cc -o $t/b.so -shared -fPIC -Wl,-soname,libfoo.so -xc -
+int fn1() { return 42; }
+EOF
+
+cat <<EOF | cc -o $t/c.so -shared -fPIC -Wl,-soname,libbar.so -xc -
+int fn2() { return 42; }
+EOF
+
+../mold -o $t/exe $t/a.o $t/b.so $t/c.so > /dev/null
+
+readelf --dynamic $t/exe > $t/readelf
+fgrep -q 'Shared library: [libfoo.so]' $t/readelf
+fgrep -q 'Shared library: [libbar.so]' $t/readelf
+
+../mold -o $t/exe $t/a.o --as-needed $t/b.so $t/c.so > /dev/null
+
+readelf --dynamic $t/exe > $t/readelf
+fgrep -q 'Shared library: [libfoo.so]' $t/readelf
+! fgrep -q 'Shared library: [libbar.so]' $t/readelf
+
+echo ' OK'

test/basic.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+set -e
+echo -n "Testing $(basename -s .sh $0) ..."
+t=$(pwd)/tmp/$(basename -s .sh $0)
+mkdir -p $t
+
+echo '.globl _start; _start: jmp loop' | cc -o $t/a.o -c -x assembler -
+echo '.globl loop; loop: jmp loop' | cc -o $t/b.o -c -x assembler -
+../mold -static -o $t/exe $t/a.o $t/b.o > /dev/null
+objdump -d $t/exe > /dev/null
+file $t/exe | grep -q ELF
+
+echo ' OK'

test/copyrel.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+set -e
+echo -n "Testing $(basename -s .sh $0) ..."
+t=$(pwd)/tmp/$(basename -s .sh $0)
+mkdir -p $t
+
+cat <<EOF | cc -o $t/a.o -c -xc -
+#include <stdio.h>
+
+extern int foo;
+extern int bar;
+
+int main() {
+  printf("%d %d %d\n", foo, bar, &foo == &bar);
+  return 0;
+}
+EOF
+
+cat <<EOF | cc -o $t/b.o -c -x assembler -
+  .globl foo, bar
+  .data;
+foo:
+bar:
+  .long 42
+EOF
+
+../mold -o $t/exe /usr/lib/x86_64-linux-gnu/crt1.o \
+  /usr/lib/x86_64-linux-gnu/crti.o \
+  /usr/lib/gcc/x86_64-linux-gnu/9/crtbegin.o \
+  $t/a.o $t/b.o \
+  /usr/lib/gcc/x86_64-linux-gnu/9/libgcc.a \
+  /usr/lib/x86_64-linux-gnu/libgcc_s.so.1 \
+  /lib/x86_64-linux-gnu/libc.so.6 \
+  /usr/lib/x86_64-linux-gnu/libc_nonshared.a \
+  /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 \
+  /usr/lib/gcc/x86_64-linux-gnu/9/crtend.o \
+  /usr/lib/x86_64-linux-gnu/crtn.o > /dev/null
+
+$t/exe | grep -q '42 42 1'
+
+echo ' OK'

test/duplicate-error.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+set -e
+echo -n "Testing $(basename -s .sh $0) ..."
+t=$(pwd)/tmp/$(basename -s .sh $0)
+mkdir -p $t
+
+cat <<EOF | cc -o $t/a.o -c -x assembler -
+  .text
+  .globl main
+main:
+  nop
+EOF
+
+! ../mold -o $t/exe $t/a.o $t/a.o 2> $t/log
+grep -q 'duplicate symbol: .*\.o: .*\.o: main' $t/log
+
+echo ' OK'

test/dynamic.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+set -e
+echo -n "Testing $(basename -s .sh $0) ..."
+t=$(pwd)/tmp/$(basename -s .sh $0)
+mkdir -p $t
+
+echo '.globl main; main:' | cc -o $t/a.o -c -x assembler -
+
+../mold -o $t/exe /usr/lib/x86_64-linux-gnu/crt1.o \
+  /usr/lib/x86_64-linux-gnu/crti.o \
+  /usr/lib/gcc/x86_64-linux-gnu/9/crtbegin.o \
+  $t/a.o \
+  /usr/lib/gcc/x86_64-linux-gnu/9/crtend.o \
+  /usr/lib/x86_64-linux-gnu/crtn.o \
+  /usr/lib/gcc/x86_64-linux-gnu/9/libgcc.a \
+  /usr/lib/x86_64-linux-gnu/libgcc_s.so.1 \
+  /lib/x86_64-linux-gnu/libc.so.6 \
+  /usr/lib/x86_64-linux-gnu/libc_nonshared.a \
+  /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 > /dev/null
+
+readelf --dynamic $t/exe | grep -q "
+Dynamic section at offset 0x2048 contains 26 entries:
+  Tag        Type                         Name/Value
+ 0x0000000000000001 (NEEDED)             Shared library: [libgcc_s.so.1]
+ 0x0000000000000001 (NEEDED)             Shared library: [libc.so.6]
+ 0x0000000000000001 (NEEDED)             Shared library: [ld-linux-x86-64.so.2]
+ 0x0000000000000007 (RELA)               0x2001c8
+ 0x0000000000000008 (RELASZ)             24 (bytes)
+ 0x0000000000000009 (RELAENT)            24 (bytes)
+ 0x0000000000000017 (JMPREL)             0x2001b0
+ 0x0000000000000002 (PLTRELSZ)           24 (bytes)
+ 0x0000000000000003 (PLTGOT)             0x202028
+ 0x0000000000000014 (PLTREL)             RELA
+ 0x0000000000000006 (SYMTAB)             0x2001e0
+ 0x000000000000000b (SYMENT)             24 (bytes)
+ 0x0000000000000005 (STRTAB)             0x200228
+ 0x000000000000000a (STRSZ)              83 (bytes)
+ 0x0000000000000004 (HASH)               0x20027c
+ 0x0000000000000019 (INIT_ARRAY)         0x202210
+ 0x000000000000001b (INIT_ARRAYSZ)       8 (bytes)
+ 0x000000000000001a (FINI_ARRAY)         0x202208
+ 0x000000000000001c (FINI_ARRAYSZ)       8 (bytes)
+ 0x000000006ffffff0 (VERSYM)             0x20029c
+ 0x000000006ffffffe (VERNEED)            0x2002a8
+ 0x000000006fffffff (VERNEEDNUM)         1
+ 0x0000000000000015 (DEBUG)              0x0
+ 0x000000000000000c (INIT)               0x201030
+ 0x000000000000000d (FINI)               0x201020
+ 0x0000000000000000 (NULL)               0x0
+"
+
+readelf --symbols --use-dynamic $t/exe | grep -q "
+Symbol table for image:
+  Num Buc:    Value          Size   Type   Bind Vis      Ndx Name
+    1   1: 0000000000000000   483 FUNC    GLOBAL DEFAULT UND __libc_start_main
+    2   2: 0000000000000000   204 FUNC    GLOBAL DEFAULT UND printf
+"
+
+echo ' OK'