[GlobPattern] Update invalid glob pattern diagnostic for unmatched '['

Update this diagnostic to mention the reason (unmatched '['), matching
the other diagnostic about stray '\'. The original pattern is omitted,
as some users may mention the original pattern in another position, not
repeating it.

clang-tools-extra/test/pp-trace/pp-trace-filter.cpp

@@ -14,4 +14,4 @@ int i = M;
 // CHECK-NOT:  - Callback: EndOfMainFile
 // CHECK:      ...
 
-// INVALID: error: invalid glob pattern: [
+// INVALID: error: invalid glob pattern, unmatched '['

lld/Common/Strings.cpp

@@ -27,7 +27,7 @@ SingleStringMatcher::SingleStringMatcher(StringRef Pattern) {
   } else {
     Expected<GlobPattern> Glob = GlobPattern::create(Pattern);
     if (!Glob) {
-      error(toString(Glob.takeError()));
+      error(toString(Glob.takeError()) + ": " + Pattern);
       return;
     }
     ExactMatch = false;

lld/ELF/Driver.cpp

@@ -1114,7 +1114,7 @@ static bool remapInputs(StringRef line, const Twine &location) {
   else if (Expected<GlobPattern> pat = GlobPattern::create(fields[0]))
     config->remapInputsWildcards.emplace_back(std::move(*pat), fields[1]);
   else {
-    error(location + ": " + toString(pat.takeError()));
+    error(location + ": " + toString(pat.takeError()) + ": " + fields[0]);
     return true;
   }
   return false;
@@ -1415,7 +1415,7 @@ static void readConfigs(opt::InputArgList &args) {
     else if (Expected<GlobPattern> pat = GlobPattern::create(kv.first))
       config->shuffleSections.emplace_back(std::move(*pat), uint32_t(v));
     else
-      error(errPrefix + toString(pat.takeError()));
+      error(errPrefix + toString(pat.takeError()) + ": " + kv.first);
   }
 
   auto reports = {std::make_pair("bti-report", &config->zBtiReport),
@@ -1453,7 +1453,7 @@ static void readConfigs(opt::InputArgList &args) {
     else if (Expected<GlobPattern> pat = GlobPattern::create(kv.first))
       config->deadRelocInNonAlloc.emplace_back(std::move(*pat), v);
     else
-      error(errPrefix + toString(pat.takeError()));
+      error(errPrefix + toString(pat.takeError()) + ": " + kv.first);
   }
 
   cl::ResetAllOptionOccurrences();
@@ -1610,7 +1610,8 @@ static void readConfigs(opt::InputArgList &args) {
     if (Expected<GlobPattern> pat = GlobPattern::create(pattern))
       config->warnBackrefsExclude.push_back(std::move(*pat));
     else
-      error(arg->getSpelling() + ": " + toString(pat.takeError()));
+      error(arg->getSpelling() + ": " + toString(pat.takeError()) + ": " +
+            pattern);
   }
 
   // For -no-pie and -pie, --export-dynamic-symbol specifies defined symbols
@@ -1968,7 +1969,7 @@ static void handleUndefined(Symbol *sym, const char *option) {
 static void handleUndefinedGlob(StringRef arg) {
   Expected<GlobPattern> pat = GlobPattern::create(arg);
   if (!pat) {
-    error("--undefined-glob: " + toString(pat.takeError()));
+    error("--undefined-glob: " + toString(pat.takeError()) + ": " + arg);
     return;
   }
 

lld/test/ELF/dead-reloc-in-nonalloc.s

@@ -46,7 +46,7 @@
 
 # RUN: not ld.lld -z dead-reloc-in-nonalloc='['=0 2>&1 | FileCheck %s --check-prefix=INVALID
 
-# INVALID: error: -z dead-reloc-in-nonalloc=: invalid glob pattern: [
+# INVALID: error: -z dead-reloc-in-nonalloc=: invalid glob pattern, unmatched '[': [
 
 .globl _start
 _start:

lld/test/ELF/remap-inputs.test

@@ -31,7 +31,7 @@
 
 # RUN: not ld.lld --remap-inputs-file=err2.map aa.o -o /dev/null 2>&1 | \
 # RUN:   FileCheck %s --check-prefix=ERR2 --implicit-check-not=error:
-# ERR2:      error: err2.map:1: invalid glob pattern: aa.[o
+# ERR2:      error: err2.map:1: invalid glob pattern, unmatched '[': aa.[o
 # ERR2-NEXT: error: cannot open aa.o: {{.*}}
 
 # RUN: not ld.lld --remap-inputs=aa.o aa.o -o /dev/null 2>&1 | \

lld/test/ELF/shuffle-sections.s

@@ -52,7 +52,7 @@
 
 # RUN: not ld.lld --shuffle-sections='['=0 2>&1 | FileCheck %s --check-prefix=INVALID
 
-# INVALID: error: --shuffle-sections=: invalid glob pattern: [
+# INVALID: error: --shuffle-sections=: invalid glob pattern, unmatched '[': [
 
 ## .text has an alignment of 4.
 .global _start

lld/test/ELF/undefined-glob.s

@@ -52,7 +52,7 @@
 # RUN: not ld.lld -o /dev/null %t.o %t.a --undefined-glob '[' 2>&1 | \
 # RUN:   FileCheck -check-prefix=BAD-PATTERN %s
 
-# BAD-PATTERN: --undefined-glob: invalid glob pattern: [
+# BAD-PATTERN: --undefined-glob: invalid glob pattern, unmatched '[': [
 
 .globl _start
 _start:

lld/test/ELF/version-script-complex-wildcards.s

@@ -48,7 +48,7 @@
 # RUN: echo "FOO { global: extern \"C++\" { a[; }; };" > %t9.script
 # RUN: not ld.lld --version-script %t9.script -shared %t.o -o /dev/null 2>&1 \
 # RUN:   | FileCheck %s --check-prefix=ERROR
-# ERROR: invalid glob pattern: a[
+# ERROR: invalid glob pattern, unmatched '[': a[
 
 .text
 .globl _Z3abbi

lld/test/ELF/warn-backrefs.s

@@ -101,7 +101,7 @@
 # RUN: ld.lld --fatal-warnings --warn-backrefs -u foo %t2.a %t1.o -o /dev/null
 
 # RUN: not ld.lld --warn-backrefs-exclude='[' 2>&1 | FileCheck --check-prefix=INVALID %s
-# INVALID: error: --warn-backrefs-exclude: invalid glob pattern: [
+# INVALID: error: --warn-backrefs-exclude: invalid glob pattern, unmatched '[': [
 
 .globl _start, foo
 _start:

llvm/lib/Support/GlobPattern.cpp

@@ -62,7 +62,6 @@ Expected<GlobPattern> GlobPattern::create(StringRef S) {
   Pat.Prefix = S.substr(0, PrefixSize);
   if (PrefixSize == std::string::npos)
     return Pat;
-  StringRef Original = S;
   S = S.substr(PrefixSize);
 
   // Parse brackets.
@@ -74,7 +73,7 @@ Expected<GlobPattern> GlobPattern::create(StringRef S) {
       ++I;
       size_t J = S.find(']', I + 1);
       if (J == StringRef::npos)
-        return make_error<StringError>("invalid glob pattern: " + Original,
+        return make_error<StringError>("invalid glob pattern, unmatched '['",
                                        errc::invalid_argument);
       StringRef Chars = S.substr(I, J - I);
       bool Invert = S[I] == '^' || S[I] == '!';

llvm/test/tools/llvm-ifs/exclude.test

@@ -11,7 +11,7 @@
 # RUN: not llvm-ifs --input-format=IFS --output-ifs=- --exclude='[' %s 2>&1 | \
 # RUN: FileCheck %s --check-prefix=BAD-GLOB
 
-# BAD-GLOB: error: invalid glob pattern: [
+# BAD-GLOB: error: invalid glob pattern, unmatched '['
 
 --- !ifs-v1
 SoName: somelib.so

llvm/test/tools/llvm-objcopy/ELF/wildcard-syntax.test

@@ -131,7 +131,7 @@ Sections:
     Type: SHT_PROGBITS
 Symbols: []
 
-# WARN: warning: invalid glob pattern: ][]
+# WARN: warning: invalid glob pattern, unmatched '['
 
 # CHECK: LoadName:
 # CHECK:         Name: (0)