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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - #pragma STDC CX_LIMITED_RANGE ON occurring in invalid place: missing diagnostics"
href="https://bugs.llvm.org/show_bug.cgi?id=52494">52494</a>
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<th>Summary</th>
<td>#pragma STDC CX_LIMITED_RANGE ON occurring in invalid place: missing diagnostics
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>pavel.morozkin@gmail.com
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>int main(void)
{
int i;
#pragma STDC FENV_ACCESS OFF
#pragma STDC CX_LIMITED_RANGE ON
#pragma STDC FP_CONTRACT OFF
return 0;
}
-std=c11 -pedantic -Wall -Wextra
<source>:42:14: error: '#pragma STDC FENV_ACCESS' can only appear at file scope
or at the start of a compound statement
#pragma STDC FENV_ACCESS OFF
^
<source>:44:14: error: '#pragma fp_contract' can only appear at file scope or
at the start of a compound statement
#pragma STDC FP_CONTRACT OFF
Why no error for "#pragma STDC CX_LIMITED_RANGE"?
C11:
- 7.3.4 The CX_LIMITED_RANGE pragma:
<span class="quote">> The pragma can occur either outside external declarations or preceding all explicit declarations and statements inside a compound statement.</span >
- 7.12.2 The FP_CONTRACT pragma:
<span class="quote">> Each pragma can occur either outside external declarations or preceding all explicit declarations and statements inside a compound statement. </span >
- 7.6.1 The FENV_ACCESS pragma:
<span class="quote">> The pragma shall occur either outside external declarations or preceding all explicit declarations and statements inside a compound statement.</span >
Here we see that the text for CX_LIMITED_RANGE and for FP_CONTRACT is almost
the same (except "each" vs. "the"). Hence, it is expected that the diagnostics
is the same.</pre>
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