https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94367
Bug ID: 94367
Summary: pragma GCC diagnostics messes up with one line "if"
blocks without curly braces
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: preprocessor
Assignee: unassigned at gcc dot gnu.org
Reporter: romain.geissler at amadeus dot com
Target Milestone: ---
Hi,
It looks like "if" blocks without curly braces cannot be surrounded by pragma
diagnostics. It looks like this is a very old issue, gcc 4.6 already seem to
have this problem on Compiler Explorer. Clang raises no such error.
void f()
{
if (true)
#pragma GCC diagnostic push
;
#pragma GCC diagnostic pop
else
;
}
<source>: In function 'void f()':
<source>:7:5: error: 'else' without a previous 'if'
7 | else
| ^~~~
Compiler returned: 1
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