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[trace] Check for __builtin_return_address explicitly.

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Some other compilers such as clang and icc support the
__builtin_return_address() intrinsic as well, so we don't
need to check for __GNUC__ >= 3 only.
This commit is contained in:
M Joonas Pihlaja 2009-07-24 09:12:10 +03:00
parent 2b0e070f6a
commit b509b548b1
2 changed files with 13 additions and 1 deletions
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12
build/configure.ac.system
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@ -73,6 +73,18 @@ dnl ====================================================================
dnl Header/function checks
dnl ====================================================================
dnl check if we have a __builtin_return_address for the cairo-trace
dnl utility.
AC_MSG_CHECKING([for __builtin_return_address(0)])
AC_TRY_COMPILE([],[__builtin_return_address(0);],
[have_builtin_return_address=yes],
[have_builtin_return_address=no])
AC_MSG_RESULT($have_builtin_return_address)
if test "x$have_builtin_return_address" = "xyes"; then
AC_DEFINE(HAVE_BUILTIN_RETURN_ADDRESS, 1,
[Define to 1 if your compiler supports the __builtin_return_address() intrinsic.])
fi
dnl Checks for precise integer types
AC_CHECK_HEADERS([stdint.h inttypes.h sys/int_types.h])
AC_CHECK_TYPES([uint64_t, uint128_t])

2
util/cairo-trace/trace.c
View file

@ -177,7 +177,7 @@ static bool _line_info;
static bool _mark_dirty;
static const cairo_user_data_key_t destroy_key;
#if __GNUC__ >= 3
#if HAVE_BUILTIN_RETURN_ADDRESS
#define _emit_line_info() do { \
if (_line_info && _write_lock ()) { \
void *addr = __builtin_return_address(0); \