On 7/2/20 12:03 PM, Rodney Radford via TriEmbed wrote:
Technically,
you are not supposed to declare a new variable inside a case without
using braces to create a new stack frame.
Most compilers won't allow it. GCC doesn't:
Given this code:
int main(void) {
int q = 1;
switch(q) {
case 0:
int a = 5;
break;
case 1:
q = 0;
break;
}
return 0;
}
GCC emits this error:
bad_case.cpp: In function ‘int main()’:
bad_case.cpp:8:8: error: jump to case label [-fpermissive]
case 1:
^
bad_case.cpp:5:8: note: crosses initialization of ‘int a’
int a = 5;
^
MSVC does something similar.
-B
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