Merge pull request #108 from alyst/fix_libc_errno

gzopen(): use Libc.errno()

Project.toml

@@ -9,6 +9,10 @@ Zlib_jll = "83775a58-1f1d-513f-b197-d71354ab007a"
 
 [compat]
 julia = "1.9"
+Libdl = "1.0"
+Zlib_jll = "1.0" 
+Aqua = "0.8"
+Test = "1.0"
 
 [extras]
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"

src/gz.jl

@@ -189,7 +189,7 @@ function gzopen(fname::AbstractString, gzmode::AbstractString, gz_buf_size::Inte
 
     gz_file = Zlib_h.gzopen(fname, gzmode)
     if gz_file == C_NULL
-        errno = unsafe_load(cglobal((:errno, :libc), Cint))
+        errno = Libc.errno()
         throw(SystemError("$(fname)", errno))
     end
     if gz_buf_size != Z_DEFAULT_BUFSIZE
@@ -236,7 +236,7 @@ function gzdopen(name::AbstractString, fd::Integer, gzmode::AbstractString, gz_b
 
     gz_file = Zlib_h.gzdopen(reinterpret(Cint, dup_fd), gzmode)
     if gz_file == C_NULL
-        errno = unsafe_load(cglobal((:errno, :libc), Cint))
+        errno = Libc.errno()
         throw(SystemError("$(name)", errno))
     end
     if gz_buf_size != Z_DEFAULT_BUFSIZE

test/runtests.jl

@@ -52,6 +52,9 @@ try
     @test data == data3
 
     # Test gzfdio
+    @test_throws "No such file or directory" gzopen("wrong_file.gz", "r")
+    @test_throws "Bad file descriptor" gzdopen("wrong_fd.gz", -1, "r", 1024)
+
     raw_file = open(test_compressed, "r")
     gzfile = gzdopen(fd(raw_file), "r")
     data4 = read(gzfile, String)