https://bugs.llvm.org/show_bug.cgi?id=47818
Bug ID: 47818
Summary: flang preprocessor fails to parse simple macro alias
Product: flang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Frontend
Assignee: unassignedb...@nondot.org
Reporter: t...@dev-zero.ch
CC: david.tr...@arm.com, jper...@nvidia.com,
kirankuma...@gmail.com, llvm-bugs@lists.llvm.org,
sscalp...@nvidia.com
Given the following code:
#define TO_VERSION2(MAJOR, MINOR) ((MAJOR) * 10000 + (MINOR) * 100)
#define TO_VERSION TO_VERSION2
#if TO_VERSION2(1, 11) <= TO_VERSION2(0, 0)
#endif
#if TO_VERSION(1, 11) <= TO_VERSION(0, 0)
#endif
I get with the latest trunk (llvmorg-12-init-8404-gacd0dd3a62d):
$ flang -E prog.F
/data/tiziano/flang/install/bin/f18: could not scan prog.F
prog.F:8:15: error: excess characters after expression
#if TO_VERSION(1, 11) <= TO_VERSION(0, 0)
^^^
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