Do not include '@' in symbol name

Fixes rui314#1168

elf/input-files.cc

@@ -22,8 +22,9 @@ Symbol<E> *get_symbol(Context<E> &ctx, std::string_view key,
 }
 
 template <typename E>
-Symbol<E> *get_symbol(Context<E> &ctx, std::string_view name) {
-  return get_symbol(ctx, name, name);
+Symbol<E> *get_symbol(Context<E> &ctx, std::string_view key) {
+  std::string_view name = key.substr(0, key.find('@'));
+  return get_symbol(ctx, key, name);
 }
 
 template <typename E>

test/elf/trace-symbol-symver.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+. $(dirname $0)/common.inc
+
+cat <<EOF | $CC -c -o $t/a.o -xc -
+void foo1() {}
+void foo2() {}
+void foo3() {}
+
+__asm__(".symver foo1, foo@VER1");
+__asm__(".symver foo2, foo@VER2");
+__asm__(".symver foo3, foo@@VER3");
+EOF
+
+cat <<EOF > $t/b.version
+VER1 { local: *; };
+VER2 { local: *; };
+VER3 { local: *; };
+EOF
+
+$CC -B. -o $t/c.so -shared $t/a.o -Wl,--version-script=$t/b.version \
+   -Wl,--trace-symbol='foo@VER1' > /dev/null
+
+cat <<EOF | $CC -c -o $t/d.o -xc -
+void foo();
+__asm__(".symver foo, foo@VER1");
+int main() { foo(); }
+EOF
+
+$CC -B. -o $t/exe $t/d.o $t/c.so -Wl,--trace-symbol='foo@VER1' > /dev/null
+$QEMU $t/exe