Core: fix misallocation at ngx_crypt_apr1 (ticket #412). Found by using auth_basic.t from mdounin nginx-tests under valgrind. ==10470== Invalid write of size 1 ==10470== at 0x43603D: ngx_crypt_to64 (ngx_crypt.c:168) ==10470== by 0x43648E: ngx_crypt (ngx_crypt.c:153) ==10470== by 0x489D8B: ngx_http_auth_basic_crypt_handler (ngx_http_auth_basic_module.c:297) ==10470== by 0x48A24A: ngx_http_auth_basic_handler (ngx_http_auth_basic_module.c:240) ==10470== by 0x44EAB9: ngx_http_core_access_phase (ngx_http_core_module.c:1121) ==10470== by 0x44A822: ngx_http_core_run_phases (ngx_http_core_module.c:895) ==10470== by 0x44A932: ngx_http_handler (ngx_http_core_module.c:878) ==10470== by 0x455EEF: ngx_http_process_request (ngx_http_request.c:1852) ==10470== by 0x456527: ngx_http_process_request_headers (ngx_http_request.c:1283) ==10470== by 0x456A91: ngx_http_process_request_line (ngx_http_request.c:964) ==10470== by 0x457097: ngx_http_wait_request_handler (ngx_http_request.c:486) ==10470== by 0x4411EE: ngx_epoll_process_events (ngx_epoll_module.c:691) ==10470== Address 0x5866fab is 0 bytes after a block of size 27 alloc'd ==10470== at 0x4A074CD: malloc (vg_replace_malloc.c:236) ==10470== by 0x43B251: ngx_alloc (ngx_alloc.c:22) ==10470== by 0x421B0D: ngx_malloc (ngx_palloc.c:119) ==10470== by 0x421B65: ngx_pnalloc (ngx_palloc.c:147) ==10470== by 0x436368: ngx_crypt (ngx_crypt.c:140) ==10470== by 0x489D8B: ngx_http_auth_basic_crypt_handler (ngx_http_auth_basic_module.c:297) ==10470== by 0x48A24A: ngx_http_auth_basic_handler (ngx_http_auth_basic_module.c:240) ==10470== by 0x44EAB9: ngx_http_core_access_phase (ngx_http_core_module.c:1121) ==10470== by 0x44A822: ngx_http_core_run_phases (ngx_http_core_module.c:895) ==10470== by 0x44A932: ngx_http_handler (ngx_http_core_module.c:878) ==10470== by 0x455EEF: ngx_http_process_request (ngx_http_request.c:1852) ==10470== by 0x456527: ngx_http_process_request_headers (ngx_http_request.c:1283) ==10470==

# Copyright (C) Nginx, Inc.


# clang


NGX_CLANG_VER=`$CC -v 2>&1 | grep 'clang version' 2>&1 \
                           | sed -e 's/^.*clang version \(.*\)/\1/'`

echo " + clang version: $NGX_CLANG_VER"

have=NGX_COMPILER value="\"clang $NGX_CLANG_VER\"" . auto/define


CC_TEST_FLAGS="-pipe"


# optimizations

#NGX_CLANG_OPT="-O2"
#NGX_CLANG_OPT="-Oz"
NGX_CLANG_OPT="-O"

case $CPU in
    pentium)
        # optimize for Pentium
        CPU_OPT="-march=pentium"
        NGX_CPU_CACHE_LINE=32
    ;;

    pentiumpro | pentium3)
        # optimize for Pentium Pro, Pentium II and Pentium III
        CPU_OPT="-march=pentiumpro"
        NGX_CPU_CACHE_LINE=32
    ;;

    pentium4)
        # optimize for Pentium 4
        CPU_OPT="-march=pentium4"
        NGX_CPU_CACHE_LINE=128
    ;;

    athlon)
        # optimize for Athlon
        CPU_OPT="-march=athlon"
        NGX_CPU_CACHE_LINE=64
    ;;

    opteron)
        # optimize for Opteron
        CPU_OPT="-march=opteron"
        NGX_CPU_CACHE_LINE=64
    ;;

esac

CC_AUX_FLAGS="$CC_AUX_FLAGS $CPU_OPT"


CFLAGS="$CFLAGS -pipe $CPU_OPT"

if [ ".$PCRE_OPT" = "." ]; then
    PCRE_OPT="-O2 -pipe $CPU_OPT"
else
    PCRE_OPT="$PCRE_OPT -pipe"
fi

if [ ".$MD5_OPT" = "." ]; then
    MD5_OPT="-O2 -pipe $CPU_OPT"
else
    MD5_OPT="$MD5_OPT -pipe"
fi

if [ ".$ZLIB_OPT" = "." ]; then
    ZLIB_OPT="-O2 -pipe $CPU_OPT"
else
    ZLIB_OPT="$ZLIB_OPT -pipe"
fi


# warnings

CFLAGS="$CFLAGS $NGX_CLANG_OPT -Wall -Wextra -Wpointer-arith"
#CFLAGS="$CFLAGS -Wmissing-prototypes"

# we have a lot of unused function arguments
CFLAGS="$CFLAGS -Wno-unused-parameter"

# stop on warning
#CFLAGS="$CFLAGS -Werror"

# debug
CFLAGS="$CFLAGS -g"

if [ ".$CPP" = "." ]; then
    CPP="$CC -E"
fi