Test the exact archive format. In particular, test which file names use the
string table or not.

RUN: mkdir -p %t
RUN: cd %t

RUN: printf bar. > 0123456789abcde
RUN: printf zed. > 0123456789abcdef
RUN: mkdir -p foo
RUN: printf bar2 > foo/0123456789abcde
RUN: printf zed2 > foo/0123456789abcdef

RUN: rm -f %t.a
RUN: llvm-ar --format=gnu rc %t.a 0123456789abcde 0123456789abcdef foo/0123456789abcde foo/0123456789abcdef
RUN: cat %t.a | FileCheck -strict-whitespace %s

CHECK:      !<arch>
CHECK-NEXT: //                                              18        `
CHECK-NEXT: 0123456789abcdef/
CHECK-NEXT: 0123456789abcde/0           0     0     644     4         `
CHECK-NEXT: bar.
CHECK-SAME: /0              0           0     0     644     4         `
CHECK-NEXT: zed.
CHECK-SAME: 0123456789abcde/0           0     0     644     4         `
CHECK-NEXT: bar2
CHECK-SAME: /0              0           0     0     644     4         `
CHECK-NEXT: zed2

RUN: rm -f %t.a
RUN: llvm-ar --format=bsd rc %t.a 0123456789abcde 0123456789abcdef
RUN: cat %t.a | FileCheck -strict-whitespace --check-prefix=BSD %s

BSD:      !<arch>
BSD-NEXT: #1/20           0           0     0     644     24        `
BSD-NEXT: 0123456789abcde{{.....}}bar.
BSD-SAME: #1/16           0           0     0     644     20        `
BSD-NEXT: 0123456789abcdefzed.

RUN: rm -f %t.a
RUN: llvm-ar --format=darwin rcS %t.a 0123456789abcde 0123456789abcdef
RUN: cat %t.a | FileCheck -strict-whitespace --check-prefix=DARWIN %s

DARWIN:      !<arch>
DARWIN-NEXT: #1/20           0           0     0     644     28        `
Each [[:space:]] matches a newline.  We explicitly match 3 newlines, as the
fourth newline is implicitly consumed by FileCheck and cannot be matched.
DARWIN-NEXT: 0123456789abcde{{.....}}bar.{{[[:space:]][[:space:]][[:space:]]}}
DARWIN-NEXT: #1/20           0           0     0     644     28        `
DARWIN-NEXT: 0123456789abcdef{{....}}zed.


RUN: rm -f test.a
RUN: llvm-ar --format=gnu rcT test.a 0123456789abcde 0123456789abcdef
RUN: cat test.a | FileCheck -strict-whitespace --check-prefix=THIN %s
THIN: !<thin>
THIN-NEXT: //                                              36        `
THIN-NEXT: 0123456789abcde/
THIN-NEXT: 0123456789abcdef/{{$}}
THIN: {{^$}}
THIN: /0              0           0     0     644     4         `
THIN-NEXT: /17             0           0     0     644     4         `

RUN: mkdir -p bar
RUN: rm -f bar/test.a
RUN: llvm-ar --format=gnu rcT bar/test.a 0123456789abcde 0123456789abcdef foo/0123456789abcde foo/0123456789abcdef
RUN: cat bar/test.a | FileCheck -strict-whitespace --check-prefix=THIN-PATH %s
THIN-PATH: !<thin>
THIN-PATH-NEXT: //                                              90        `
THIN-PATH-NEXT: ..{{/|\\}}0123456789abcde/
THIN-PATH-NEXT: ..{{/|\\}}0123456789abcdef/
THIN-PATH-NEXT: ..{{/|\\}}foo{{/|\\}}0123456789abcde/
THIN-PATH-NEXT: ..{{/|\\}}foo{{/|\\}}0123456789abcdef/
THIN-PATH-NEXT: /0              0           0     0     644     4         `
THIN-PATH-NEXT: /20             0           0     0     644     4         `
THIN-PATH-NEXT: /41             0           0     0     644     4         `
THIN-PATH-NEXT: /65             0           0     0     644     4         `

RUN: not llvm-ar --format=bsd rcT bad.a 0123456789abcde 0123456789abcdef 2>&1 | FileCheck --check-prefix=BSD-THIN %s
BSD-THIN: error: only the gnu format has a thin mode

If an archive has an object with no symbols, the linker and some other
tools on some versions of Solaris will abort operations if there is no
symbol table.  Create such an object, put it into an archive, and check to
see that there is an empty symbol table.
RUN: mkdir -p %t
RUN: yaml2obj %S/Inputs/solaris-nosymbols.yaml -o %t/foo.o
RUN: llvm-ar rs %t/foo.a %t/foo.o
RUN: cat -v %t/foo.a | FileCheck -strict-whitespace --check-prefix=SOLARIS %s
SOLARIS:      !<arch>
SOLARIS-NEXT: /               0           0     0     0       8         `
SOLARIS-NEXT: ^@^@^@^@^@^@^@^@foo.o/