[ELF] Improve wildcard tests for input section descriptions

lld/test/ELF/linkerscript/wildcards.s

@@ -1,12 +1,12 @@
 # REQUIRES: x86
-# RUN: split-file %s %t
-# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %t/asm -o %t.o
+# RUN: rm -rf %t && split-file %s %t && cd %t
+# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %t/asm -o a.o
 
 ## Default case: abc and abx included in text.
 # RUN: echo "SECTIONS { \
 # RUN:      .text : { *(.abc .abx) } }" > %t.script
-# RUN: ld.lld -o %t.out --script %t.script %t.o
-# RUN: llvm-objdump --section-headers %t.out | \
+# RUN: ld.lld -o out --script %t.script a.o
+# RUN: llvm-objdump --section-headers out | \
 # RUN:   FileCheck -check-prefix=SEC-DEFAULT %s
 # SEC-DEFAULT:      Sections:
 # SEC-DEFAULT-NEXT: Idx Name          Size
@@ -23,15 +23,15 @@
 ## Now replace the symbol with '?' and check that results are the same.
 # RUN: echo "SECTIONS { \
 # RUN:      .text : { *(.abc .ab?) } }" > %t.script
-# RUN: ld.lld -o %t.out --script %t.script %t.o
-# RUN: llvm-objdump --section-headers %t.out | \
+# RUN: ld.lld -o out --script %t.script a.o
+# RUN: llvm-objdump --section-headers out | \
 # RUN:   FileCheck -check-prefix=SEC-DEFAULT %s
 
 ## Now see how replacing '?' with '*' will consume whole abcd.
 # RUN: echo "SECTIONS { \
 # RUN:      .text : { *(.abc .ab*) } }" > %t.script
-# RUN: ld.lld -o %t.out --script %t.script %t.o
-# RUN: llvm-objdump --section-headers %t.out | \
+# RUN: ld.lld -o out --script %t.script a.o
+# RUN: llvm-objdump --section-headers out | \
 # RUN:   FileCheck -check-prefix=SEC-ALL %s
 # SEC-ALL:      Sections:
 # SEC-ALL-NEXT: Idx Name          Size
@@ -47,8 +47,8 @@
 ## All sections started with .a are merged.
 # RUN: echo "SECTIONS { \
 # RUN:      .text : { *(.a*) } }" > %t.script
-# RUN: ld.lld -o %t.out --script %t.script %t.o
-# RUN: llvm-objdump --section-headers %t.out | \
+# RUN: ld.lld -o out --script %t.script a.o
+# RUN: llvm-objdump --section-headers out | \
 # RUN:   FileCheck -check-prefix=SEC-NO %s
 # SEC-NO: Sections:
 # SEC-NO-NEXT: Idx Name          Size
@@ -84,10 +84,40 @@
 .globl _start
 _start:
 
+#--- bracket.lds
+# RUN: ld.lld -T bracket.lds a.o -o out
+# RUN: llvm-objdump --section-headers out | FileCheck %s --check-prefix=SEC-DEFAULT
+SECTIONS {
+  .text : { *([.]abc .ab[v-y] ) }
+}
+
+## Test a few non-wildcard meta characters rejected by GNU ld.
+
+#--- lbrace.lds
+# RUN: ld.lld -T lbrace.lds a.o -o out
+SECTIONS {
+  .text : { *(.a* { ) }
+}
+
 #--- lparen.lds
 ## ( is recognized as a section name pattern. Note, ( is rejected by GNU ld.
-# RUN: ld.lld -T %t/lparen.lds %t.o -o %t.out
-# RUN: llvm-objdump --section-headers %t.out | FileCheck --check-prefix=SEC-NO %s
+# RUN: ld.lld -T lparen.lds a.o -o out
+# RUN: llvm-objdump --section-headers out | FileCheck --check-prefix=SEC-NO %s
 SECTIONS {
  .text : { *(.a* ( ) }
 }
+
+#--- rbrace.lds
+# RUN: ld.lld -T rbrace.lds a.o -o out
+SECTIONS {
+  .text : { *(.a* } ) }
+}
+
+#--- rparen.lds
+# RUN: not ld.lld -T rparen.lds %t.o 2>&1 | FileCheck %s --check-prefix=ERR-RPAREN --match-full-lines --strict-whitespace
+#      ERR-RPAREN:{{.*}}: expected filename pattern
+# ERR-RPAREN-NEXT:>>>   .text : { *(.a* ) ) }
+# ERR-RPAREN-NEXT:>>>                     ^
+SECTIONS {
+  .text : { *(.a* ) ) }
+}