qapi: Make string input and opts visitor require non-null input

The string input visitor tries to cope with null input.  Null input
isn't used anywhere, and isn't covered by tests.  Unsurprisingly, it
doesn't fully work: start_list() crashes because it passes the input
via parse_str() to strtoll() unchecked.

Make string_input_visitor_new() assert its argument isn't null, and
drop the code trying to deal with null input.

The opts visitor crashes when you try to actually visit something with
null input.  Make opts_visitor_new() assert its argument isn't null,
mostly for clarity.

qobject_input_visitor_new() already asserts its argument isn't null.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1488544368-30622-17-git-send-email-armbru@redhat.com>
2 files changed
tree: 6b97a4198f04510aa7d12a3754a40fe9b99d185a
  1. audio/
  2. backends/
  3. block/
  4. bsd-user/
  5. chardev/
  6. contrib/
  7. crypto/
  8. default-configs/
  9. disas/
  10. docs/
  11. fpu/
  12. fsdev/
  13. gdb-xml/
  14. hw/
  15. include/
  16. io/
  17. libdecnumber/
  18. linux-headers/
  19. linux-user/
  20. migration/
  21. nbd/
  22. net/
  23. pc-bios/
  24. po/
  25. qapi/
  26. qga/
  27. qobject/
  28. qom/
  29. replay/
  30. roms/
  31. scripts/
  32. slirp/
  33. stubs/
  34. target/
  35. tcg/
  36. tests/
  37. trace/
  38. ui/
  39. util/
  40. .dir-locals.el
  41. .exrc
  42. .gitignore
  43. .gitmodules
  44. .mailmap
  45. .shippable.yml
  46. .travis.yml
  47. accel.c
  48. arch_init.c
  49. atomic_template.h
  50. balloon.c
  51. block.c
  52. blockdev-nbd.c
  53. blockdev.c
  54. blockjob.c
  55. bootdevice.c
  56. bt-host.c
  57. bt-vhci.c
  58. Changelog
  59. CODING_STYLE
  60. configure
  61. COPYING
  62. COPYING.LIB
  63. cpu-exec-common.c
  64. cpu-exec.c
  65. cpus-common.c
  66. cpus.c
  67. cputlb.c
  68. device-hotplug.c
  69. device_tree.c
  70. disas.c
  71. dma-helpers.c
  72. dump.c
  73. exec.c
  74. gdbstub.c
  75. HACKING
  76. hax-stub.c
  77. hmp-commands-info.hx
  78. hmp-commands.hx
  79. hmp.c
  80. hmp.h
  81. ioport.c
  82. iothread.c
  83. kvm-all.c
  84. kvm-stub.c
  85. LICENSE
  86. MAINTAINERS
  87. Makefile
  88. Makefile.objs
  89. Makefile.target
  90. memory.c
  91. memory_ldst.inc.c
  92. memory_mapping.c
  93. module-common.c
  94. monitor.c
  95. numa.c
  96. os-posix.c
  97. os-win32.c
  98. page_cache.c
  99. qapi-schema.json
  100. qdev-monitor.c
  101. qdict-test-data.txt
  102. qemu-bridge-helper.c
  103. qemu-doc.texi
  104. qemu-ga.texi
  105. qemu-img-cmds.hx
  106. qemu-img.c
  107. qemu-img.texi
  108. qemu-io-cmds.c
  109. qemu-io.c
  110. qemu-nbd.c
  111. qemu-nbd.texi
  112. qemu-option-trace.texi
  113. qemu-options-wrapper.h
  114. qemu-options.h
  115. qemu-options.hx
  116. qemu-seccomp.c
  117. qemu-tech.texi
  118. qemu.nsi
  119. qemu.sasl
  120. qmp.c
  121. qtest.c
  122. README
  123. replication.c
  124. replication.h
  125. rules.mak
  126. softmmu_template.h
  127. spice-qemu-char.c
  128. tcg-runtime.c
  129. tci.c
  130. thunk.c
  131. tpm.c
  132. trace-events
  133. translate-all.c
  134. translate-all.h
  135. translate-common.c
  136. user-exec-stub.c
  137. user-exec.c
  138. VERSION
  139. version.rc
  140. vl.c
  141. xen-common-stub.c
  142. xen-common.c
  143. xen-hvm-stub.c
  144. xen-hvm.c
  145. xen-mapcache.c