[tor-bugs] #26460 [Core Tor/Tor]: All autoconf tests that include studio.h fail with a missing ssp.h on cygwin

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#26460: All autoconf tests that include studio.h fail with a missing ssp.h on
cygwin
------------------------------+--------------------------------------
     Reporter:  teor          |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: 0.3.4.x-final
    Component:  Core Tor/Tor  |    Version:  Tor: 0.3.3.1-alpha
     Severity:  Normal        |   Keywords:  regression, 033-backport
Actual Points:                |  Parent ID:  #26356
       Points:                |   Reviewer:
      Sponsor:                |
------------------------------+--------------------------------------
 It looks like ssp doesn't actually work on cygwin.
 We should fix the ssp test so it includes studio.h and fails.

 {{{
 configure:10546: checking whether the compiler accepts -fstack-protector-
 all
 configure:10565: gcc -c -g -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
 -pedantic -Werror -fstack-protector-all  -I${top_srcdir}/src/common
 conftest.c >&5
 configure:10565: $? = 0
 configure:10584: gcc -o conftest.exe -g -O2 -U_FORTIFY_SOURCE
 -D_FORTIFY_SOURCE=2 -pedantic -Werror -fstack-protector-all
 -I${top_srcdir}/src/common  conftest.c  >&5
 configure:10584: $? = 0
 configure:10596: result: yes
 configure:10622: checking whether the compiler accepts -Wstack-protector
 configure:10641: gcc -c -g -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
 -fstack-protector-all -pedantic -Werror -Wstack-protector
 -I${top_srcdir}/src/common conftest.c >&5
 configure:10641: $? = 0
 configure:10672: result: yes
 configure:10685: checking whether the compiler accepts --param ssp-buffer-
 size=1
 configure:10704: gcc -c -g -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
 -fstack-protector-all -Wstack-protector -pedantic -Werror --param ssp-
 buffer-size=1  -I${top_srcdir}/src/common conftest.c >&5
 configure:10704: $? = 0
 configure:10735: result: yes
 configure:10749: checking whether the compiler accepts -fPIE
 configure:10768: gcc -c -g -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
 -fstack-protector-all -Wstack-protector --param ssp-buffer-size=1
 -pedantic -Werror -fPIE  -I${top_srcdir}/src/common conftest.c >&5
 configure:10768: $? = 0
 configure:10799: result: yes
 configure:10811: checking whether the linker accepts -pie
 configure:10854: gcc -o conftest.exe -g -O2 -U_FORTIFY_SOURCE
 -D_FORTIFY_SOURCE=2 -fstack-protector-all -Wstack-protector --param ssp-
 buffer-size=1 -fPIE -pedantic -Werror  -I${top_srcdir}/src/common     -pie
 conftest.c  -lz  -levent -lssl -lcrypto      >&5
 In file included from /usr/include/stdio.h:800,
                  from conftest.c:78:
 /usr/local/lib/gcc/x86_64-unknown-cygwin/8.1.0/include/ssp/stdio.h:38:10:
 fatal error: ssp.h: No such file or directory
  #include <ssp.h>
           ^~~~~~~
 compilation terminated.
 configure:10854: $? = 1
 configure: program exited with status 1
 configure: failed program was:
 | /* confdefs.h */
 | #define PACKAGE_NAME "tor"
 | #define PACKAGE_TARNAME "tor"
 | #define PACKAGE_VERSION "0.3.3.7"

 (similar macros)

 | #define STDC_HEADERS 1
 | #define HAVE_SYS_TYPES_H 1

 (similar macros)

 | /* end confdefs.h.  */
 | #include <stdio.h>
 | int
 | main ()
 | {
 | fputs("", stdout)
 |   ;
 |   return 0;
 | }
 configure:10868: result: no
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26460>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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