#48284: gdb @7.9.1_0: cannot determine type of primitive global variables ---------------------+------------------------------- Reporter: rbd@… | Owner: stuartwesterman@… Type: defect | Status: new Priority: Normal | Milestone: Component: ports | Version: 2.3.3 Resolution: | Keywords: Port: gdb | ---------------------+------------------------------- Comment (by stuartwesterman@…): When you compile in the way that you have above, the debug symbols are not created. I think you say it the best here: I have read that dsymutil is *not* run when the source files are separately compiled into .o files and the latter are then linked with a separate command (as in my multi-file cc command sequence shown above). Perhaps this has some bearing on the problem? Simply run '''dsymutil''' on your output elf, after linking. The following works for me: {{{ wei@r [gdbtest]$ cc -g -c m0.c -o m0.o; cc -g -c m1.c -o m1.o; cc -g m*.o -o m wei@r [gdbtest]$ la total 56 drwxr-xr-x 7 wei staff 238B Jul 12 17:21 ./ drwxr-xr-x 8 wei staff 272B Jul 12 16:13 ../ -rwxr-xr-x 1 wei staff 8.7K Jul 12 17:21 m* -rw-r--r-- 1 wei staff 118B Jul 12 16:17 m0.c -rw-r--r-- 1 wei staff 2.4K Jul 12 17:21 m0.o -rw-r--r-- 1 wei staff 106B Jul 12 16:13 m1.c -rw-r--r-- 1 wei staff 2.3K Jul 12 17:21 m1.o wei@r [gdbtest]$ dsymutil m wei@r [gdbtest]$ la total 56 drwxr-xr-x 8 wei staff 272B Jul 12 17:21 ./ drwxr-xr-x 8 wei staff 272B Jul 12 16:13 ../ -rwxr-xr-x 1 wei staff 8.7K Jul 12 17:21 m* drwxr-xr-x 3 wei staff 102B Jul 12 17:21 m.dSYM/ -rw-r--r-- 1 wei staff 118B Jul 12 16:17 m0.c -rw-r--r-- 1 wei staff 2.4K Jul 12 17:21 m0.o -rw-r--r-- 1 wei staff 106B Jul 12 16:13 m1.c -rw-r--r-- 1 wei staff 2.3K Jul 12 17:21 m1.o wei@r [gdbtest]$ ggdb m GNU gdb (GDB) 7.9.1 Copyright (C) 2015 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-apple-darwin14.3.0". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from m...Reading symbols from /Users/wei/code/gdbtest/m.dSYM/Contents/Resources/DWARF/m...done. done. (gdb) break main Breakpoint 1 at 0x100000eee: file m0.c, line 5. (gdb) break func Breakpoint 2 at 0x100000f27: file m1.c, line 5. (gdb) run Starting program: /Users/wei/code/gdbtest/m warning: Could not open OSO archive file "/BinaryCache/corecrypto/corecrypto-233.1.2~26/Symbols/BuiltProducts/libcorecrypto_static.a" warning: `/BinaryCache/coreTLS/coreTLS-35.20.2~10/Objects/coretls.build/coretls.build /Objects-normal/x86_64/system_coretls_vers.o': can't open to read symbols: No such file or directory. warning: Could not open OSO archive file "/BinaryCache/coreTLS/coreTLS-35.20.2~10/Symbols/BuiltProducts/libcoretls_ciphersuites.a" warning: Could not open OSO archive file "/BinaryCache/coreTLS/coreTLS-35.20.2~10/Symbols/BuiltProducts/libcoretls_handshake.a" warning: Could not open OSO archive file "/BinaryCache/coreTLS/coreTLS-35.20.2~10/Symbols/BuiltProducts/libcoretls_record.a" warning: Could not open OSO archive file "/BinaryCache/coreTLS/coreTLS-35.20.2~10/Symbols/BuiltProducts/libcoretls_stream_parser.a" Breakpoint 1, main () at m0.c:5 5 gf = 1.23; (gdb) ptype gf type = float (gdb) continue Continuing. gf: 1.23 Breakpoint 2, func () at m1.c:5 5 lf = 4.56; (gdb) ptype gf type = float (gdb) q A debugging session is active. Inferior 1 [process 388] will be killed. Quit anyway? (y or n) y wei@r [gdbtest]$ }}} Given the size and complexity of your project this may not help you, but compiling in the following way automatically runs '''dsymutil''': {{{ wei@r [gdbtest]$ la total 16 drwxr-xr-x 4 wei staff 136B Jul 12 16:29 ./ drwxr-xr-x 8 wei staff 272B Jul 12 16:13 ../ -rw-r--r-- 1 wei staff 118B Jul 12 16:17 m0.c -rw-r--r-- 1 wei staff 106B Jul 12 16:13 m1.c wei@r [gdbtest]$ cc -g m0.c m1.c -o m wei@r [gdbtest]$ la total 40 drwxr-xr-x 6 wei staff 204B Jul 12 16:29 ./ drwxr-xr-x 8 wei staff 272B Jul 12 16:13 ../ -rwxr-xr-x 1 wei staff 8.8K Jul 12 16:29 m* drwxr-xr-x 3 wei staff 102B Jul 12 16:29 m.dSYM/ -rw-r--r-- 1 wei staff 118B Jul 12 16:17 m0.c -rw-r--r-- 1 wei staff 106B Jul 12 16:13 m1.c wei@r [gdbtest]$ }}} -- Ticket URL: <https://trac.macports.org/ticket/48284#comment:2> MacPorts <https://www.macports.org/> Ports system for OS X