66 lines
1.6 KiB
Diff
66 lines
1.6 KiB
Diff
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Index: ChangeLog
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===================================================================
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--- ChangeLog
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+++ ChangeLog
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@@ -1,5 +1,11 @@
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+2011-06-30 Reinhard Max <max@suse.de>
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+
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+ * unix/configure.in: Add a volatile declaration to the test for
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+ TCL_STACK_GROWS_UP to prevent gcc 4.6 from producing invalid
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+ results due to aggressive optimisation.
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+
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2011-06-23 Don Porter <dgp@users.sourceforge.net>
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*** 8.5.10 TAGGED FOR RELEASE ***
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* changes: Update for 8.5.10 release.
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Index: unix/configure
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===================================================================
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--- unix/configure
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+++ unix/configure
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@@ -18703,14 +18703,16 @@
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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int StackGrowsUp(int *parent) {
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int here;
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+ volatile int result;
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if (parent)
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- return (&here < parent);
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+ result = (&here < parent);
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else
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- return StackGrowsUp(&here);
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+ result = StackGrowsUp(&here);
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+ return result;
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}
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int main (int argc, char *argv[]) {
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return StackGrowsUp(0);
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}
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Index: unix/configure.in
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===================================================================
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--- unix/configure.in
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+++ unix/configure.in
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@@ -703,14 +703,16 @@
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AC_CACHE_CHECK([if the C stack grows upwards in memory], tcl_cv_stack_grows_up, [
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AC_TRY_RUN([
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int StackGrowsUp(int *parent) {
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int here;
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+ volatile int result;
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if (parent)
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- return (&here < parent);
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+ result = (&here < parent);
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else
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- return StackGrowsUp(&here);
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+ result = StackGrowsUp(&here);
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+ return result;
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}
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int main (int argc, char *argv[]) {
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return StackGrowsUp(0);
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}
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], tcl_cv_stack_grows_up=yes, tcl_cv_stack_grows_up=no,
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