0.47.10
by Scott Kitterman
Import upstream version 0.98.3+dfsg |
1 |
AC_ARG_ENABLE([gcc-vcheck], |
0.47.16
by Marc Deslauriers
Import upstream version 0.98.7+dfsg |
2 |
[AS_HELP_STRING([--disable-gcc-vcheck], [do not check for buggy gcc version])], |
0.47.10
by Scott Kitterman
Import upstream version 0.98.3+dfsg |
3 |
gcc_check=$enableval, gcc_check="yes")
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4 |
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5 |
msg_gcc_check="use --disable-gcc-vcheck to disable this check. Before reporting any bugs check with a supported version of gcc" |
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6 |
VERSION_SUFFIX= |
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7 |
dnl Check for gcc-4.1.0 |
|
8 |
if test "$gcc_check" = "yes"; then
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|
9 |
if test "x$ac_compiler_gnu" = "xyes"; then
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10 |
AC_MSG_CHECKING([for a supported version of gcc]) |
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11 |
gcc_version=`${CC} -dumpversion` |
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12 |
case "${gcc_version}" in |
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13 |
4.1.0*) |
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14 |
AC_MSG_RESULT([no (${gcc_version})]) |
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15 |
AC_MSG_ERROR([gcc 4.1.0 is known to incorrectly compile upx.c. Upgrade your compiler to at least 4.1.1/4.1.2)]) |
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16 |
;; |
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17 |
*) |
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18 |
AC_MSG_RESULT([ok (${gcc_version})]) |
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;; |
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20 |
esac |
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21 |
case "${gcc_version}" in |
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22 |
[[56789]].* | 4.[[3456789]].*) |
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23 |
# bb #1581 - temporarely add -fno-strict-aliasing so gcc 4.4.0 |
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24 |
# works correctly |
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25 |
CFLAGS="$CFLAGS -fno-strict-aliasing"
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;; |
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*) |
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28 |
;; |
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29 |
esac |
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30 |
fi |
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31 |
else |
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32 |
CFLAGS="$CFLAGS -O0"
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33 |
VERSION_SUFFIX="$VERSION_SUFFIX-broken-compiler"
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fi |
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35 |
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36 |
# add distcheck warning flags |
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37 |
distcheck_enable_flags=0 |
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38 |
if test "x$ac_compiler_gnu" = "xyes"; then
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39 |
gcc_version=`${CC} -dumpversion` |
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40 |
case "${gcc_version}" in |
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41 |
4.[[3456789]]*) |
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42 |
distcheck_enable_flags=1 |
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43 |
;; |
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44 |
[[56789]].*) |
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45 |
distcheck_enable_flags=1 |
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46 |
;; |
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47 |
esac |
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48 |
fi |
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49 |
||
50 |
dnl Checks if compiler produces valid code, regardless of compiler |
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51 |
dnl we do these checks here to avoid receiving endless bugreports about |
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52 |
dnl breakages due to compiler bugs. |
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53 |
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54 |
dnl Check if compiler produces invalid code on gcc PR27603 (affects upx.c) |
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55 |
dnl testcase from gcc testsuite |
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56 |
AC_MSG_CHECKING([for gcc bug PR27603]) |
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57 |
AC_TRY_RUN( |
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58 |
[ |
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59 |
/* (C) Richard Guenther */ |
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60 |
void exit (int); |
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61 |
void abort (void); |
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int a; |
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int main(void) |
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64 |
{ |
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65 |
int j; |
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66 |
for (j = 0; j < 6; j++) |
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67 |
{
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68 |
if ((unsigned)j - 3 <= 1) |
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69 |
exit (0); |
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70 |
a = 1000 * (6 - j); |
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71 |
}
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72 |
abort (); |
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73 |
}
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74 |
], [AC_MSG_RESULT([ok, bug not present])], |
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75 |
[AC_MSG_ERROR([your compiler has gcc PR27603 bug, use a different compiler, see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27603])], [AC_MSG_RESULT([cross-compiling, assumed ok])]) |
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76 |
||
77 |
dnl Check if compiler produces invalid code on gcc PR26763-2 (affects upx.c) |
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78 |
dnl testcase from gcc testsuite |
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79 |
AC_MSG_CHECKING([for gcc bug PR26763-2]) |
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80 |
AC_TRY_RUN(
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81 |
[
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82 |
/* (C) Richard Guenther */ |
|
83 |
extern void abort(void); |
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84 |
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85 |
static int try (char *a, int d) |
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86 |
{
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87 |
return a + d > a; |
|
88 |
} |
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89 |
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90 |
int main(void) |
|
91 |
{ |
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92 |
char bla[100]; |
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93 |
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94 |
if (try (bla + 50, -1)) |
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95 |
abort (); |
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96 |
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97 |
return 0; |
|
98 |
} |
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99 |
], [AC_MSG_RESULT([ok, bug not present])], |
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100 |
[AC_MSG_ERROR([your compiler has gcc PR26763-2 bug, use a different compiler, see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26763])],[AC_MSG_RESULT([cross-compiling, assumed ok])]) |
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101 |
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102 |
dnl Check if compiler produces invalid code on own testcase based on upx.c |
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103 |
AC_MSG_CHECKING([for valid code generation of CLI_ISCONTAINED]) |
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104 |
AC_TRY_RUN( |
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105 |
[ |
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106 |
#include <stdio.h>
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107 |
static struct v{ |
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108 |
char* dst; |
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109 |
unsigned int dsize; |
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110 |
unsigned int dcur; |
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111 |
unsigned int backsize; |
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112 |
signed int unp_offset; |
|
113 |
} values[] = { |
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114 |
{(char*)0xf78ab008, 0x2e000, 1, 4, -1594}, |
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115 |
{(char*)0xb7af1008, 0x2e000, 1, 4, -1594} |
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116 |
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117 |
}; |
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118 |
extern void abort(void); |
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119 |
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120 |
#define CLI_ISCONTAINED(bb, bb_size, sb, sb_size) \ |
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121 |
((bb_size) > 0 && (sb_size) > 0 && (size_t)(sb_size) <= (size_t)(bb_size) \ |
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122 |
&& (sb) >= (bb) && ((sb) + (sb_size)) <= ((bb) + (bb_size)) && ((sb) + (sb_size)) > (bb) && (sb) < ((bb) + (bb_size))) |
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123 |
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124 |
int crashtest() |
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125 |
{ |
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126 |
unsigned int backsize, dcur; |
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127 |
int dval=0x12000, unp_offset; |
|
128 |
int* dsize = &dval;
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129 |
char* dst = (char*)0x12000; |
|
130 |
while(1) { |
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131 |
backsize=4; |
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132 |
dcur=0; |
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133 |
unp_offset=0x800002c7; |
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134 |
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135 |
if (!CLI_ISCONTAINED(dst, *dsize, dst+dcur+unp_offset, backsize) || !CLI_ISCONTAINED(dst, *dsize, dst+dcur, backsize) || unp_offset >=0) |
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136 |
return -1; |
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137 |
abort(); |
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138 |
} |
|
139 |
return 0; |
|
140 |
} |
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141 |
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142 |
int main(void) |
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143 |
{ |
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144 |
int i; |
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145 |
for(i=0;i<sizeof(values)/sizeof(values[0]);i++) { |
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146 |
struct v* v= &values[i]; |
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147 |
char* dst = v->dst; |
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148 |
unsigned int* dsize = &v->dsize;
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149 |
unsigned int dcur = v->dcur; |
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150 |
unsigned int backsize = v->backsize-1; |
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151 |
signed int unp_offset = v->unp_offset; |
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152 |
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153 |
if(!CLI_ISCONTAINED(dst, *dsize, dst+dcur+unp_offset, backsize) || |
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154 |
!CLI_ISCONTAINED(dst, *dsize,dst+dcur,backsize) || unp_offset >= 0) { |
|
155 |
continue; |
|
156 |
} |
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157 |
abort(); |
|
158 |
} |
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159 |
crashtest(); |
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160 |
return 0; |
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161 |
} |
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162 |
], [AC_MSG_RESULT([ok, bug not present])], |
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163 |
[AC_MSG_ERROR([your compiler has a bug that causes clamav bug no. 670, use a different compiler, see http://bugs.clamav.net/bugzilla/show_bug.cgi?id=670])], [AC_MSG_RESULT([cross-compiling, assumed ok])]) |
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164 |
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165 |
dnl Check if compiler produces invalid code on gcc PR28045 (affects upx.c) |
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166 |
dnl testcase from gcc testsuite |
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167 |
AC_MSG_CHECKING([for gcc bug PR28045]) |
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168 |
AC_TRY_RUN( |
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169 |
[ |
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170 |
/* (C) Andrew Pinski */ |
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171 |
extern void abort(void); |
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172 |
struct a |
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173 |
{ |
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174 |
unsigned int bits : 1; |
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175 |
signed long val : ((sizeof(long) * 8) - 1); |
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176 |
}; |
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177 |
static int Fnegate (struct a b) |
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178 |
{ |
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179 |
if ((-((long)b.val)) <= ((long) ((1UL << ((sizeof(long) * 8) - 2)) -1UL)) |
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180 |
&& (-((long)b.val)) >= (-(((long) ((1UL << ((sizeof(long) * 8) - 2)) -1UL))) - 1)) |
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181 |
return 0 ; |
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182 |
abort (); |
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183 |
} |
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184 |
int main (void) |
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185 |
{ |
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186 |
struct a b = {1, 1}; |
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187 |
Fnegate (b); |
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188 |
return 0; |
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189 |
} |
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190 |
], [AC_MSG_RESULT([ok, bug not present])], |
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191 |
[AC_MSG_ERROR([your compiler has gcc PR28045 bug, use a different compiler, see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28045])], [AC_MSG_RESULT([cross-compiling, assumed ok])]) |
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192 |
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193 |
dnl Check if compiler produces invalid code on gcc PR37573 (affects autoit.c) |
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194 |
dnl this is a bug in gcc 4.4.0, but for some reason it affects gcc 4.1.2 too |
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195 |
dnl gcc 4.1.3 is OK. This bug occurs only at -O3. |
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196 |
AC_MSG_CHECKING([for gcc bug PR37573]) |
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197 |
AC_TRY_RUN( |
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198 |
[ |
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199 |
#include <stdlib.h>
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200 |
#include <string.h>
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201 |
struct S |
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202 |
{ |
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203 |
unsigned int *a; |
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204 |
unsigned int b; |
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205 |
unsigned int c[624]; |
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206 |
}; |
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207 |
static unsigned char |
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208 |
foo (struct S *s) |
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209 |
{ |
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210 |
unsigned int r; |
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211 |
if (!--s->b) |
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212 |
{ |
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213 |
unsigned int *c = s->c; |
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214 |
unsigned int i; |
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215 |
s->a = c; |
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216 |
for (i = 0; i < 227; i++) |
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217 |
c[i] = |
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218 |
((((c[i] ^ c[i + 1]) & 0x7ffffffe) ^ c[i]) >> 1) ^ |
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219 |
((0 - (c[i + 1] & 1)) & 0x9908b0df) ^ c[i + 397]; |
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220 |
for (; i < 623; i++) |
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221 |
c[i] = |
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222 |
((((c[i] ^ c[i + 1]) & 0x7ffffffe) ^ c[i]) >> 1) ^ |
|
223 |
((0 - (c[i + 1] & 1)) & 0x9908b0df) ^ c[i - 227]; |
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224 |
c[623] = |
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225 |
((((c[623] ^ c[0]) & 0x7ffffffe) ^ c[623]) >> 1) ^ ((0 - (c[0] & 1)) & |
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226 |
0x9908b0df) ^ c[i |
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227 |
- |
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228 |
227]; |
|
229 |
} |
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230 |
r = *(s->a++); |
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231 |
r ^= (r >> 11); |
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232 |
r ^= ((r & 0xff3a58ad) << 7); |
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233 |
r ^= ((r & 0xffffdf8c) << 15); |
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234 |
r ^= (r >> 18); |
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235 |
return (unsigned char) (r >> 1); |
|
236 |
} |
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237 |
||
238 |
void |
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239 |
bar (unsigned char *p, unsigned int q, unsigned int r) |
|
240 |
{ |
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241 |
struct S s; |
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242 |
unsigned int i; |
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243 |
unsigned int *c = s.c; |
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244 |
*c = r; |
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245 |
for (i = 1; i < 624; i++) |
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246 |
c[i] = i + 0x6c078965 * ((c[i - 1] >> 30) ^ c[i - 1]); |
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247 |
s.b = 1; |
|
248 |
while (q--) |
|
249 |
*p++ ^= foo (&s);
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250 |
}; |
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251 |
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252 |
static unsigned char p[23] = { |
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253 |
0xc0, 0x49, 0x17, 0x32, 0x62, 0x1e, 0x2e, 0xd5, 0x4c, 0x19, 0x28, 0x49, |
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254 |
0x91, 0xe4, 0x72, 0x83, 0x91, 0x3d, 0x93, 0x83, 0xb3, 0x61, 0x38 |
|
255 |
}; |
|
256 |
||
257 |
static unsigned char q[23] = { |
|
258 |
0x3e, 0x41, 0x55, 0x54, 0x4f, 0x49, 0x54, 0x20, 0x55, 0x4e, 0x49, 0x43, |
|
259 |
0x4f, 0x44, 0x45, 0x20, 0x53, 0x43, 0x52, 0x49, 0x50, 0x54, 0x3c |
|
260 |
}; |
|
261 |
||
262 |
int |
|
263 |
main (void) |
|
264 |
{ |
|
265 |
unsigned int s; |
|
266 |
s = 23; |
|
267 |
bar (p, s, s + 0xa25e); |
|
268 |
if (memcmp (p, q, s) != 0) |
|
269 |
abort (); |
|
270 |
return 0; |
|
271 |
} |
|
272 |
||
273 |
], [AC_MSG_RESULT([ok, bug not present])], |
|
274 |
[AC_MSG_ERROR([your compiler has gcc PR37573 bug, use a lower optimization level (-O1 or -O2), see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37573])], [AC_MSG_RESULT([cross-compiling, assumed ok])]) |
|
275 |
||
276 |
# It's not fatal if gperf is missing |
|
277 |
AM_MISSING_PROG(GPERF, gperf) |
|
278 |
AC_SUBST(GPERF) |
|
279 |
||
280 |
AC_TYPE_OFF_T |
|
281 |
AC_COMPILE_CHECK_SIZEOF([short]) |
|
282 |
AC_COMPILE_CHECK_SIZEOF([int]) |
|
283 |
AC_COMPILE_CHECK_SIZEOF([long]) |
|
284 |
AC_COMPILE_CHECK_SIZEOF([long long]) |
|
285 |
AC_COMPILE_CHECK_SIZEOF([void *]) |